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我说肉肉你说萌！
2018年05月10日
我说肉肉你说萌！
既然有自己的独立根系，基本上可以说分株是比砍头枝插容易成活，也生长更快。 只要将原本已经快分离出去的个体小心的掰下来尽量留存有部分根系，然后重新种植下就可（甚至不用晾苗），时机尽量选择在春秋，种下的时候潮土或者干土就行，盆土不要太潮湿，注意通风，小心伤口感染，有条件可以再伤口上抹点杀菌药。虽然分株的苗会带部分根系，但也不要直接接受强日照，可以放于明亮无直射光通风处，一周左右再适量增加光照，如有徒长迹象可提前增加光照。 譬如说唐印，茎干底部容易分生出许多侧芽，然后形成一个个小个体，不用脱土，小心点掰扯都能取出来，既繁殖了新的个体，又给老株的侧芽创造了新的生长环境。 [图片]有些则是连接的比较紧密的，譬如说黄花照波，大力点直接扯下来也是没问题的，或者用到刀子切开，带点根系。 [图片]枝干番杏也能算是，通常是一溜枝条接触到土面的都会长根，剪取其已长根的部分枝条，可带土移植，又是个小个体。 [图片]如果想要增加该品种的数量，或者实在是盆太小种不下了，可以考虑分株，因为自带根系，所以分株的成长速度和存活率也远高于枝插。　
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后果的大树
2018年05月10日
后果的大树
有花友问起薰衣草可以扦插吗?薰衣草繁殖方法有三种，播种，扦插，分株。薰衣草扦插一般在春秋两季进行，有条件的夏季扦插也可以，只不过春秋两季更适合而已，下面我们来具体操作。 [图片]1、枝条选择 我们选择当年生的半木质化枝条为佳，然后剪成8-10厘米小段，底部呈45°斜剪。小段上部保留6-8片叶子，下部的叶子可以剪掉。 如果花友已经有一盆薰衣草了，可以直接打头，然后用打掉的头扦插也可以，成活率很高。 2、介质准备 扦插介质并不复杂，可以用珍珠岩，或者粗砂等都可以，最好不要用园土之类。 [图片]3.扦插 将薰衣草小段插入介质中，深度大概是小段长度的1/3,上面留3-4对叶子就可以了，为了增加扦插成活率，扦插后浇透水，然后覆盖一层薄膜或者塑料袋都可以，然后放在散光阴凉处，每隔3-5天通风透气一次。差不多两周左右生根。 其实就这么简单，一般来说薰衣草扦插的成活率大概在70%左右，所以花友如果想要扦插薰衣草要做好准备，多扦插一些，不要只插一根两根的。
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张祥明
2018年05月10日
张祥明
[图片]1、浇水失当 原因：给栀子花浇水太少，会导致植株缺水无法开花；给它浇水太多也可能会使它烂根，从而难以开花。 解决方法：若是平时浇的水太少就为它多浇一点水，但要注意一次不能浇太多。若是平时是浇的水太多，就在它的花盆下面点石块，然后将它放到通风好的环境之中慢慢养护。等它恢复之后按照科学的方法浇水。 [图片]2、施肥不当 原因：给栀子花的肥料太少，会导致植株因为没有足够的养分而难以开花；给它施用的肥料过多可能会影响到它的根系，也会使得它难以开花。 解决方法：若是平时施的肥料太少，就适量提高施肥的频率，不过要使用稀释过的肥料，最好是施用磷钾元素含量较高的肥料。若是平时施肥太多，就用大量清水冲洗土壤，将多余的肥料冲出来，然后放到通风处晾干。等它恢复之后按照科学的方法施肥。 [图片]3、光照不当 原因：给栀子花太长时间的阳光照射，会导致植株被晒伤，从而难以开花；给它的光照时间太少，会影响到它正常的生长，同样会使它难以开花。 解决方法：若是平时光照时间太长，就将它放到半阴的地方养护，并且减少每天的见光时间。若是缺少光照，就将它放到阳光充足的地方养护。 [图片]
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张祥明
2018年05月10日
张祥明
[图片]1、调节温度 原因：君子兰在20℃左右的时候生长的最好，若是温度太低，低于15℃，它的部分生理活动无法正常进行，就会产生不少问题，比如夹箭。 解决方法：将君子兰移动到18-20℃的环境之中，进行养护。期间可以用绳将子它两边的叶子都绑在一起，并将它放在暗处，这样做更利于它花箭的抽出。 [图片]2、增加施肥 原因：君子兰抽箭需要一定的养分，如果不及时施肥，给它更多的养分，它就会因为难以汲取到足够的营养而发生夹箭。 解决方法：及时为它施加肥料，最好是含磷含钾的肥料。在施用前需要将肥料稀释一下，以免它的浓度太高伤到了花。一次不要加太多的肥，要薄肥勤施。 [图片]3、修根重栽 原因：君子兰的根部受到了损伤，无法正常的从土壤之中汲取营养，植株营养缺乏，自然就无法正常抽箭了。 解决方法：将君子兰整个从花土中取出来，然后找到它受伤坏掉的根须，用消过毒的刀子切掉，然后用新的土壤重新栽种。 4、增加浇水 原因：君子兰在抽箭的时候需要消耗大量的水分，若是没有足够的水分供应，它也无法正常抽箭。 解决方法：及时给它浇水，之后要让土壤保持湿润，不能使之干掉。要注意浇水要少量多次，一次不能浇太多，以免土中产生积水损伤植株根系。 [图片]
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韩塞
2018年05月10日
韩塞
[图片]1、减少浇水 原因：若是一次给君子兰浇了太多的水或是给君子兰浇水过于频繁，就会导致土壤之中产生积水。积水的出现会使得土壤之中的含氧量降低，而含氧量一旦降低，君子兰就会的根部细胞就会从有氧呼吸模式转变为无氧呼吸模式，产生乙醇。乙醇无法及时排掉，就会导致君子兰烂根。 解决方法：将花盆垫高并放到通风条件比较好的地方，等待土壤之中的水分挥发掉，之后减少浇水的量和频率。若是情况比较严重，可以将植株挖出来，剪掉坏掉的根须，换掉一半的土壤然后重新栽种。 [图片]2、更换土壤 原因：养君子兰要用透气性强的土壤，若是所用土壤空气的流通性不足，同样会使得土壤之中的氧气浓度很低，从而导致烂根。 解决方法：将植株从土壤之中取出，然后栽入到新的透气性好的土壤之中，慢慢养护。 [图片]3、科学施肥 原因：若是给君子兰使用了没有经过腐熟的肥料，肥料会被土壤之中的微生物分解。在这个过程之中会释放出大量的热，这是热量无法散去，就会影响到植株的根系。 解决方法：用大量的凉水浇灌君子兰把肥料冲走，或是干脆给它换上新的土壤，然后科学的施肥养护。 [图片]
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囧囧有神
2018年05月10日
囧囧有神
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囧囧有神
2018年05月10日
囧囧有神
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Miss Chen
2018年05月09日
Miss Chen
Description: This herbaceous perennial plant is about 4-8" tall. It consists of a rosette of basal leaves spanning about 6" across. These basal leaves are greyish green to green and glabrous. Each of these leaves is ternately compound and divided into 3 primary leaflets, while each primary leaflet is divided into 3 secondary leaflets. These secondary leaflets are pinnately cleft into linear or oblanceolate lobes. The long petioles of the compound leaves are slender and glabrous; they are pale red, tan, or brown. From the center of the rosette, there develops a semi-erect raceme of 2-6 pairs of white flowers on a long peduncle (flowering stalk). This raceme tends to bend to one side, while the flowers droop upside-down from their pedicels. Both the peduncle and pedicels are pale red or yellowish brown, terete, glabrous, and sometimes glaucous. The pedicels are about ¼" in length; in the middle of each pedicel, there is a pair of tiny linear bracts. Each flower is about ¾" long and assumes the form of an upside-down Dutchman's Breeches, hence the common name of the plant. It consists of 2 outer petals that are white and 2 inner petals that are pale yellow. The two outer petals form two nectar spurs that are long and spreading; they are joined together at the base. The two inner petals are much smaller and form the base of the flower; they have small wings that curl upward. The 2 sepals of each flower are white and more or less ovate in shape; they are much shorter than the petals. The blooming period occurs from early to mid-spring and lasts about 2-3 weeks. There is no noticeable floral scent. The flowers are replaced by oblongoid-ovoid seed capsules that taper into points at both ends. These capsules eventually split apart into 2 segments to release their seeds. The root system consists of a bulbous base with fleshy scales and secondary roots. [图片]Cultivation: The preference is dappled sunlight of woodlands, mesic conditions, and a fertile loamy soil with abundant organic matter. This plant develops early and can resist moderate frost without damage. Range & Habitat: Dutchman's Breeches is a common plant that occurs in nearly every county of Illinois (see Distribution Map), where it is native. Habitats include deciduous mesic woodlands, especially along gentle slopes, ravines, or ledges along streams. This species occurs in original woodland that has never been plowed under or bulldozed over. It's abundance in such woodlands can be highly variable – from uncommon to common. [图片]Faunal Associations: The nectar of the flowers attracts long-tongued bees primarily, including honeybees, bumblebees, mason bees (Osmia spp.), and Anthophorid bees (Anthophora ursina, Synhalonia spp., Habropoda laboriosus). Less common visitors include short-tongued Andrenid bees (Andrena spp.), Bombylius major (Giant Bee Fly), various butterflies, and skippers. The butterflies and skippers are not effective cross-pollinators of the flowers. Because the seeds have elaisomes (fleshy or oily appendages), they are distributed by ants. Ants carry the seeds to their nests, eat the elaisomes, and discard the seeds some distance from the mother plant. The foliage is toxic to mammalian herbivores and it is not often eaten by them. Photographic Location: A mesic area of Busey Woods in Urbana, Illinois, and an upland woodlands in McLean County, Illinois. [图片]Comments: This is a delightful spring wildflower of woodlands – both the flowers and foliage are attractive. Dutchman's Breeches is one of the earlier woodland wildflowers to bloom. The only other species with a similar appearance is Dicentra canadensis (Squirrel Corn). Squirrel Corn also occurs in mesic deciduous woodlands and blooms only a little later than Dutchman's Breeches. The nectar spurs of Squirrel Corn are shorter and more rounded than those of Dutchman's Breeches, and its white flowers are fragrant. It also has a root system that produces small edible tubers. Within the Fumitory family, Dicentra spp. differ from Corydalis spp. by the structure of their flowers – the former have flowers with 2 nectar spurs, while the latter have flowers with a single nectar spur.
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Miss Chen
2018年05月09日
Miss Chen
Description: This herbaceous perennial plant develops 1-2 compound basal leaves during the spring. The blades of these leaves are 3-7" long and 3-7" across; they are ascending to more or less parallel with the ground. Each leaf blade is divided into 3 leaflets (1 terminal & 2 lateral leaflets). In less developed leaves, the leaflets are pinnate-pinnatifid, ultimately dividing into narrow parallel lobes. However, in more developed leaves, each leaflet divides into 3 subleaflets, and these subleaflets are pinnate-pinnatifid, ultimately dividing into narrow lobes. The ultimate lobes of these leaves are ¼–½" long and about 3 mm. (1/8") across; they are linear, linear-elliptic, or linear-oblanceolate in shape with entire (toothless) margins and bluntly acute tips. The upper leaf surface is grayish green to medium green, glabrous, and sometimes slightly glaucous, while the lower leaf surface is white to greenish white, glabrous, and very glaucous. For each compound leaf, the petiolule (basal stalklet) of the terminal leaflet is longer than those of the 2 lateral leaflets. The petioles of the compound leaves are 3-6" long and ascending; they are pale red to pale reddish green, terete, glabrous, and often glaucous. An inflorescence consisting of a raceme of flowers sometimes develops shortly after the formation of basal leaves. This inflorescence is 6-12" tall and it is either erect or ascending. The peduncle (basal stalk) of the inflorescence is pale red or pale yellowish green, terete, glabrous, and glaucous. Each raceme has 3-10 pendant flowers. The corolla of the pendant flower is ½–¾" long, mostly white, narrowly obcordoid in shape, and somewhat flattened. Two fused outer petals form the rounded nectar spurs (above), the lateral sides, and the pair of of upturned lips (below) of the corolla. Two fused inner petals form a pair of transverse crests and a pair of small inner claws near the entrance of the corolla. The small lips are shaped like keeled hoods with translucent parallel veins. The flat crests are half-cordate in shape, slightly wrinkled, slightly undulate, and white; sometimes they are pinkish along their bases. Inserted within the corolla is a pistil with a single style and several stamens. There are also a pair of tiny sepals; they are about 2-3 mm. long, linear-lanceolate in shape, and light pink with whitish margins. The nodding pedicels of the flowers are pale green or pale reddish green, terete, glabrous, and sometimes glaucous; they are up to ¼" long. At the bases of these pedicels, there are solitary floral bracts about 3-5 mm. long; they are ovate to obovate in shape and light pink with whitish margins. [图片]The blooming period occurs during mid-spring for about 2-3 weeks. The flowers have a sweet fragrance. Afterwards, fertile flowers are replaced by drooping seed capsules that become about 12 mm. (½") long at maturity; these capsules are ovoid in shape and somewhat flattened. Each capsule divides into 2 parts to release its seeds; there are several seeds per capsule. The seeds are 1-2 mm. long, short-reniform in shape, and obscurely reticulate; each seed has an attached elaiosome (food appendage). The foliage dies down by mid-summer. The root system consists of a cluster of yellow globoid corms and fibrous roots. Cultivation: The preference is dappled sunlight to medium shade, mesic conditions, and a loose loamy soil with decaying organic matter. Growth and development occur during the spring. Germination of the seeds can be slow and difficult, although it may be possible to start new plants by separating some of the corms. Insects and disease organisms are rarely troublesome. [图片]Range & Habitat: The native Squirrel Corn occurs primarily in NE, east-central, and the southern tip of Illinois, where it is uncommon (see Distribution Map). Illinois lies toward the western range limit of this species; it is more common further to the east. Habitats include mesic deciduous woodlands, wooded bluffs, wooded slopes, ravines, and shaded stream banks. Squirrel Corn is found in high quality woodlands in Illinois, where the native ground flora is intact. It is one of the spring wildflowers that is threatened by the invasion of Garlic Mustard (Alliaria petiolata) and some Eurasian shrubs, particularly Amur Honeysuckle (Lonicera maackii). Faunal Associations: The flowers are cross-pollinated primarily by queen bumblebees. Both nectar and pollen are available as floral rewards. The seeds are distributed to some extent by ants because of their elaisomes (food appendages). Because the foliage is toxic, it is usually avoided by mammalian herbivores. The overall value of this plant to faunal wildlife is low. [图片]Photographic Location: A deciduous woodland at Jim Smith's farm in Vermilion County, Illinois. Comments: This is another wonderful spring wildflower that can be found in eastern deciduous woodlands. Both the foliage and flowers of Squirrel Corn (Dicentra canadensis) are similar in appearance to those of Dutchman's Breeches (Dicentra cucullaria). Both of these species are found in similar habitats and their blooming periods overlap (Squirrel Corn begins to bloom about 1 week later). However, Dutchman's Breeches is by far the more common wildflower in Illinois. The flowers of Squirrel Corn have short rounded nectar spurs, while those of Dutch's Breeches are longer and more narrow. The basal leaves of these two species are very difficult to distinguish, although those of Squirrel Corn appear to have slightly longer ultimate lobes on average. The corms of these two species are also different in appearance: the corms of Squirrel Corn are yellow and globoid in shape, while the corms of Dutchman's Breeches are pink and more ovoid in shape.
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Miss Chen
2018年05月09日
Miss Chen
Description: This perennial wildflower consists of a short leafy stem (4-12" tall) and a flowering stalk (1½-3' long) that are separated from each other at the base. The leafy stem is erect, light green to reddish green, and short-pubescent; it has 1-2 pseudo-whorls of 3 compound leaves at its apex. The compound leaves are trifoliate with slender petioles about 2-3" long. Individual leaflets are 2-3½" long and 1½-2½" across; they are lanceolate-ovate to oval in shape and their margins are smooth. The upper surface of the leaflets is medium green and short-pubescent to glabrous, while their lower surface is pale green and glabrous. The terminal leaflet of each trifoliate leaf has a slender petiolule (basal stalklet) up to ¾" long, while the lateral leaflets have slender petiolules less than 1/8" long. The erect to ascending flowering stalk is light green to reddish green and short-pubescent; it is usually leafless, although a less common variety of Naked-Flowered Tick Trefoil has 1-2 trifoliate leaves. The upper part of the flowering stalk consists of a raceme or narrow panicle of flowers up to 1' long. The flowers are arranged along the stalk in widely spaced pseudo-whorls. The pedicels of the flowers and lateral branches (if any) are about ½-¾" long. Individual flowers consist of 5 whitish pink or pale lavender petals, a short tubular calyx with blunt teeth that is greenish red to white, several stamens with white filaments, and a pistil with a single style. The corolla of each flower has a typical pea-like structure consisting of an erect banner, a straight horizontal keel, and a pair of spreading wings. The calyx is short-pubescent and its bottom tooth is larger in size than the others. The blooming period occurs from mid- to late summer for about 1 month. On each plant, only a few flowers are in bloom at the same time and they are not noticeably fragrant. The flowers are replaced by flattened seedpods called 'loments.' The loments usually have 2-3 one-seeded segments (less often, 1 or 4 segments); the upper side of each segment is straight or slightly concave, while the lower side is convex or rhombic. The lateral sides of each loment are covered with short hooked hairs; each loment has a long stipe (about ½" long) at its base and a shorter beak (less than ¼" long) at its tip. Each segment of the loment is about 8 mm. (1/3") long. The root system consists of a short broad taproot or caudex. This wildflower reproduces by reseeding itself. [图片]Cultivation: The preference is light to medium shade, mesic conditions, and a slightly to moderately acidic soil containing sand, rocky material, or loam with decaying organic matter. The root system of this wildflower fixes nitrogen into the soil via symbiotic bacteria. Range & Habitat: Naked-Flowered Tick Trefoil is occasional in central and southern Illinois, while in the northern section of the state it is uncommon (see Distribution Map); it is native. Habitats consist of mesic beech-maple woodlands, sandy oak woodlands, and rocky woodlands where sandstone is present. This wildflower occurs in higher quality woodlands where the native ground flora is intact. [图片]Faunal Associations: The flowers are cross-pollinated by bumblebees, other long-tongued bees, and Halictid bees; these visitors collect pollen. Nectar is not available as a floral reward. Other insects feed on the foliage and other parts of Desmodium spp. (Tick Trefoils). These species include the caterpillars of several skippers, butterflies, and moths; the leaf-mining larvae of the Buprestid beetles Pachyschelus confusus and Pachyschelus laevigatus; the larvae of the seed weevil Apion decoloratum; the thrips Echinothrips americanus and Neohydatothrips desmodianus; and the aphid Microparsus variabilis. There are also several leaf beetles that feed on the foliage of tick trefoils: Anomoea laticlavia, Bassareus lituratus, Cerotoma trifurcata, Colaspis brunnea, Cryptocephalus insertus, Odontata dorsalis, Pachybrachis nigricornis, Pachybrachis othonus, Phyllecthris dorsalis, and Saxinis omogera. Some vertebrate animals also use these plants as a food source. The seeds are eaten by the Wild Turkey and Bobwhite, while the foliage is palatable to deer, rabbits, horses, cattle, and other mammalian herbivores. Because of the height of the flowering stalk (up to 3') and the habitat (woodlands), White-tailed Deer are probably the primary transporters of the seeds of Naked-Flowered Tick Trefoil as the loments (seedpods) can cling to fur. [图片]Photographic Location: A sandy woodland at the Indiana Dunes National Lakeshore in NW Indiana. Comments: Naked-Flowered Tick Trefoil is usually easy to identify because, unlike other Desmodium spp. (Tick Trefoils), it produces its leaves and flowers on separate stalks (except for an uncommon variety). While other species in this genus produce leaves that are clearly alternate, Naked-Flowered Tick Trefoil produces its leaves in pseudo-whorls. This species also has loments (a type of seedpod) with straight or slightly concave upper sides above their segments. In contrast, most species of tick trefoil have loments with convex upper sides above their segments. Naked-Flowered Tick Trefoil also prefers shady woodlands, while other species of tick trefoil usually prefer partially shaded savannas or sunny prairies.
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