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权问薇
2018年05月19日
权问薇
[图片]1、养殖环境 （1）土壤：要求不是特别严，只要符合疏松、肥沃、呈酸性这几个要求就行。可将腐叶土、泥炭土、园土混合。如果有条件，还可加入一些基肥。 （2）浇水：一叶兰喜湿润，特别是在成长期的时候，一定要保持土壤湿润。除了浇水，在蒸发量很大时还需喷水，不过不要将太多水分留在叶子上。成长期过后，可减少水量。 （3）施肥：它较喜肥，不过不同时期需求不同。成长期每月一到两次的液肥。过了成长期，每两个月左右一次。 [图片]（4）光照：平时给予散射光就可以，不要太阴暗。可放在阳台等光线充足的地方。有直射光时遮光。 （5）温度：最好在二十度左右，在冬季需特别注意，放在室内等温暖的地方养。 （6）通风：经常在白天开窗通风，降低室内的湿度，可以有效地预防一些病害和虫害。 [图片]2、防治病害 发生病害后，不可置之不理，及时治疗。先将病变的部位剪掉，清理干净以避免它们影响其他的部分。然后喷洒药剂，两到三次。另外，环境不可过于潮湿。 [图片]
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2018年05月19日
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[图片]1、养殖环境 （1）土壤：主要的几个要求就是疏松、肥沃、透气性好。可将腐殖土、泥炭土、河沙各一份均匀混合，也可以把蛭石、珍珠岩、及泥炭土混合起来。 （2）浇水：成长季节需水多，可每隔三到五天浇一次。不过，冬季处于休眠期的时候，可十天左右一次。另外还需要喷水，特别是夏季高温时。一般选在上午十点左右以及下午六点之后喷。 [图片]（3）施肥：主要在成长阶段追施一些营养肥，可用专门的营养液，均匀浇灌。 （4）光照：植株比较喜光，光线不足叶片会褪色。因此，除了光照特别强的时候，最好将它置于阳光下，一般光照度在百分之四十到五十就行。另外，均匀受光叶痕重要，时常转动一下它的位置。 （5）温度：最适宜是二十到二十八度。冬季在十五度之下，植株会休眠。一般冬季在十度到二十度可安全过冬，如不想让它休眠可在十五度以上。 [图片]2、修剪 龙血树的成长速度快，因此很多枝条会长得很乱，有时还会徒长。因此，定期将过乱的、过密的、以及生了病虫害的、或衰老的枝叶剪掉是非常有必要的。 [图片]
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2018年05月19日
权问薇
[图片]1、养殖环境 （1）温度：榕树喜温暖，十五度左右即可。最需注意的是冬季，需在八度之上。 （2）肥料：对其需求较大，特别是生长期。在成长速度很快的时候，每个月需施加一次有机的液肥。另外，在五月份和八月份还需要额外使用一次矾肥水。另外，如果感觉它的长势不是很好，可以每天跟外追肥一次，使用动物的粪便等。另外，还可进行叶面喷肥，用营养液等。不过，夏季太炎热，冬季几乎没有需求，因此都不适合施肥。 [图片]（3）浇水：成长期经常浇水，保证湿度。特别是夏季，在最热的时候需每天两次。不过并不是越多越好，不可积水。除了浇水，还可向地面或空中洒水，提高湿度。 （4）光照：需提供充足阳光，特别是冬季。在夏季，遇到太强的光，同样也需要遮荫。 [图片]2、翻盆 定期的翻盆对其成长意义重大。不过不同年龄的植株间隔时间不同，年轻的植株大概两年一次，老桩在三到四年一次。时间最好在四月末到五月初。除了将一半的旧土换成有肥力的新土之外，还需将干枯的、过密的、过短的根都剪掉，并且修剪一下它的造型。 [图片]
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2018年05月19日
权问薇
[图片]一、土壤 樱花适合沙土中生长，最好选择肥沃、通气排水性较好的土壤。 二、合理浇水 要根据不同季节和其大小适量浇水，土壤不能过于湿润，更不能产生积水，不然会出现烂根的现象，会导致叶子脱落影响开花，严重时还可能会死亡。浇水之后可以适当的松松土，让土壤保持湿润状态就行。 [图片]三、施肥 樱花不需要过多的肥料，一般使用酸性肥料最好，每年施肥两次即可，分别在花后和初冬施肥，花后施肥适合速效肥料，而冬肥适合施有机肥料。施肥的时候最好挖穴施肥，可以帮助其根部更好的吸收养分。 四、光照温度 樱花喜欢温暖，每天要让它接受充足的阳光照射，它也十分耐寒，但在寒冷的冬季也要适当的采取防风的措施，最好还是将它搬到室内，这样开花的时间会提前。 [图片]五、修剪 对于长得太茂密的枝条要修剪，并且顺便剪掉枯枝、病枝等，在生长期徒长枝叶要剪掉，以此来减少养分的消耗，在修剪枝条后最好涂上防腐剂，因为它伤口长的比较慢，可能会变腐烂，所以要做好预防措施。 [图片]
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2018年05月19日
权问薇
[图片]1、养殖环境 （1）温度：喜温暖，在二十五度左右最好。不耐寒冷，在五度之下就会受冻，因此冬季不可将它留在室内，应移到室内或温室等温暖的地方。 （2）光照：喜欢半阴环境，不可太阴暗，不然它的叶色会变浅、叶片下垂。同时，太强的光和长时间的光照同样不行。 （3）浇水：对水分的需求量大，特别是成长期。在此阶段，需保持盆土湿润，尤其是夏季高温，更是不可缺水。除了浇水，还可适当喷些水。需注意不可积水，不然根系腐烂。 （4）施肥：成长旺季需求大，以氮肥为主。不过一次性施肥不要太多，浓度要不要太高。总体来说就是“薄肥勤施”。进入秋冬季，控制施肥量，以便过冬。 （5）土壤：富含腐殖质、且排水性好、微酸性的砂质土壤是最好的。具体可用泥炭和珍珠岩进行配制。 [图片]2、修剪 如果长时间不修剪，植株叶子容易出现变黄的情况。因此需定期修剪老叶、老枝。过密的枝条也可剪掉，提高观赏性。 [图片]3、换盆 因为金钻长得快，所以需要定期换盆。每三四年换一次，在春季换。换时注意控制肥水。 [图片]
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2018年05月19日
权问薇
[图片]1、养殖环境 （1）土壤：最主要的要求就是排水性好、肥沃以及疏松。可用园土、腐殖土、农家肥，按一比一比一的比例。不需加入基肥，避免烂根。 （2）施肥：成长期和开花期需施肥，每隔十天左右用一次含有磷元素和氮元素的肥料。不过浓度不要太高。 （3）浇水：成长期需保持湿润。不过在花期，如果太湿润就会造成落花、落叶现象，因此需严格控水。另外，冬季温度低于十度时，也要控水。 [图片]（4）温度：植株喜温暖，最好是十五到二十五这个范围。五度以下会受冻害。为了促进下一年的成长，冬季的温度最好在十度左右，最低也在五度。 （5）光照：对光线又要求，但是不可太强。平时放在光线明亮的地方，遇到太强的光遮阴。另外，长时间的照射也不好。 [图片]2、换盆松土 植株成长速度快，土壤中的养分很容易不够用，需定期换盆。一般在每年的春季，也就是成长旺季开始之前，需换盆。不只需要将一部分旧土换成新土，而且需要将老根和烂根剪掉。新土的选择要求不变。至于松土，可在春秋季进行。 [图片]
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2018年05月19日
权问薇
[图片]1、养殖环境 （1）土壤：主要要求有排水性好、疏松透气、含有腐殖质多。可将腐叶土和泥炭土混合，并加入小堆河沙和珍珠岩。有条件的还可加入少量基肥。 （2）温度：植株喜温暖，最好在二十到三十五度。不耐寒，低于五度会受冻害。为了保证第二年的正常成长，冬季温度最好在十度以上。 （3）光照：喜散射光，不可受直射光照射。平时的养护以散射光为宜，遇到强光要及时移动它的位置。 （4）浇水：根据天气来把握，如炎热可多浇一些，如阴雨天则少浇。还可根据季节，夏季除了浇水，还要洒水；冬季浇水量要少。 （5）施肥：成长最快的阶段在五六月份，每一到两周就需要施加一次肥水，可用复合肥。另外，夏季可追施含有氮元素的有机肥。 [图片]2、换盆 每隔两到三年需要换盆一次，土壤的配制可以根据前面的要求。除了土，盆也可以换，最好是泥盆或釉盆。 [图片]3、防治虫害 散尾葵容易受虫害影响，比如红蜘蛛、白粉虱等。需用百分之四十浓度的氧化乐果乳油喷杀，叶子和根部都要喷。同时，注意通风。 [图片]
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Miss Chen
2018年05月18日
Miss Chen
Description: This herbaceous perennial plant has an erect flowering stalk about 8-16" tall. Toward the lower middle of this unbranched stalk, there is a single pair of opposite leaves. These leaves are nearly sessile, oval-cordate, coarsely crenate or dentate along the margins, and often shallowly 3-lobed; they are about 2" long and 1¼" across. The flowering stalk is slender, light green, and pubescent. At the base of the plant, there are basal leaves on long petioles. Except for their petioles, they resemble the pair of opposite leaves. The inflorescence is an erect raceme; each flower is widely spaced from the others along the stalk. The pedicels of these flowers are quite short. Each white flower is a less than than ¼" across; it consists of 5 white petals, 10 yellow stamens, a pair of styles, a greenish white calyx with 5 short lobes, and a single-celled ovary. The petals are deeply pinnatifid, which provides them with a fringed appearance. The blooming period occurs from mid- to late spring. After the blooming period, each flower is replaced by an open capsule that contains many small seeds. These seeds are distributed by raindrop logistics (raindrops striking the capsule cause it to bend and fling some of its seeds). The root system can produce vegetative colonies from rhizomes. Cultivation: The preference is dappled sunlight during the spring, otherwise shade is tolerated. Bishop's Cap is usually found in mesic to dry areas of woodlands where the soil contains abundant organic matter, often where there is rocky ground. Most growth and development occurs during the spring when the soil is normally moist. Range & Habitat: The native Bishop's Cap occurs occasionally in northern, east-central, west-central, and hilly areas of southern Illinois; in many central and south-central areas of the state, it appears to be absent (see Distribution Map). Habitats include upland woodlands, wooded slopes, rocky bluffs, and shady ravines. The substrate of the rocky woodlands where this species occurs can consist of either limestone or sandstone. This species is usually found in high quality woodlands. [图片]Faunal Associations: The flowers are pollinated by Syrphid flies and small short-tongued bees (including Halictid bees and Little Carpenter bees). These insects suck nectar from the flowers; the Syrphid flies also feed on the pollen, while the short-tongued bees collect pollen for their larvae. Aside from these insect visitors, little appears to be known about floral-faunal relationships for this species. Photographic Location: A rocky wooded slope at Shades State Park in west-central Indiana. Comments: The small delicate flowers are very attractive and fairy-like. Bishop's Cap can be distinguished from other similar wildflowers by the fringed appearance of its flower petals and the pair of nearly sessile leaves on its flowering stalk.
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Miss Chen
2018年05月18日
Miss Chen
Description: This small vine is slightly woody, forming a low mat of evergreen leaves up to 4" tall and 1' or more across. The stems are mostly light green to light brown and either glabrous or hairy; old stems become brown, smooth, and woody. Pairs of opposite leaves occur along these stems on short petioles up to ¼" long. The leaves are ¼-1" long and similarly across; they are oval to orbicular in shape and smooth to slightly undulate along their margins. The upper leaf surface is glabrous, shiny, and mostly dark green, although it is often nearly white along the central vein and some of the lateral veins. The lower leaf surface is glabrous and more pale. Pairs of upright flowers occur at the tips of branches or from the axils of leaves. Each flower has a hairy white corolla about ½" long, 4 stamens, and a pistil with single style. Each pair of flowers share the same short-tubular calyx. The corolla is trumpet-shaped with 4 spreading lobes, while the calyx is light green with tiny teeth along its upper rim. There are 4 filiform stigmata per style. There are two types of flowers: those with long stamens and short styles, and those with short stamens and long styles. However, only one type of flower can be found on any individual plant. The blooming period occurs from late spring to mid-summer. The flowers are fragrant. As a result of the fusion of their ovaries, each pair of fertile flowers is replaced by a single berry. The berries are bright red, subgloboid inDistribution Map shape, and up to 1/3" (8 mm.) across. Toward the tip of each berry, there is a pair of shallow dimples. The berry interior is fleshy and rather tasteless, containing up to 8 seeds. The berries can persist throughout the winter and into the spring of the following year. The root system is fibrous. Adventitious fibrous roots can develop when the prostrate stems have contact with moist soil. Cultivation: The preference is light shade to partial sun, moist to dry-mesic conditions, and an acidic soil containing sand or rocky material (e.g., sandstone). Partridge Berry is not aggressive and it can be difficult to establish. However, it can be cultivated in a partially shaded rock garden where the soil is shallow and competition from other plants is restricted. Flowers and fruits are sparingly produced. Range & Habitat: The native Partridge Berry occurs occasionally in NE Illinois and southern Illinois, while in the rest of the state it is uncommon or absent. This small vine is distributed across a wide area of eastern North America. Habitats include rocky upland woodlands, sandy savannas, slopes of wooded sand dunes, sandstone cliffs, sandstone ledges along ravines, mossy boulders in wooded ravines, rocky river banks, edges of Red Maple swamps, and bogs. Partridge Berry is found in high quality natural areas. Faunal Associations: The flowers are cross-pollinated by bumblebees (Hicks et al., 1985). The primary floral reward for these insects is nectar. Apparently very few insects feed on the foliage of Partridge Berry. Some upland gamebirds feed on the fruits of this vine, including such species as the Ruffed Grouse, Bobwhite Quail, Wild Turkey, and the now extinct Passenger Pigeon (Martin et al., 1951/1961; Bennetts, 1900; Schorger, 1955). Mammals that feed on the fruits include the Red Fox, Eastern Skunk, Eastern Chipmunk, White-Footed Mouse, and Woodland Deer Mouse (Martin et al., 1951/1961; Hamilton, 1941). These animals spread the seeds of the berries to new locations. [图片]Photographic Location: A shaded sandstone ledge along a river at the The Potholes in west-central Indiana. Comments: This is the only species of its genus in North America. Partridge Berry has ornamental foliage, flowers, and berries. It can distinguished from other woody vines by its small size, pairs of showy white flowers, and long-lasting red berries. Another common for this species is Twinberry.
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Miss Chen
2018年05月18日
Miss Chen
Description: This herbaceous perennial plant is 1–2½' tall, branching occasionally. The central stem is terete, hairless, and usually light green (less often purplish green or purple). The alternate leaves are up to 7" long and 3½" across. They are light green or greyish green and hairless with a soft floppy texture. The leaves are ovate-oval or ovate-oblong in shape, smooth (entire) along their margins, and pinnately veined. The leaves usually taper to winged petioles up to 2½" long, although some of the upper leaves are sessile. The upper stems terminate in nodding cymes of flowers. Individual flowers are about ¾–1¼" in length. The corolla of each flower is tubular at its base, but it is more bell-shaped (campanulate) toward its outer rim, where there are 5 shallow lobes that are barely discernible. Inserted within the corolla, there are 5 white stamens with light brown anthers and a white style that is long and slender. The small greyish green calyx of each flower is about ¼" (6 mm.) long; it is divided into 5 elliptic teeth. The flower buds are pink, bluish pink, or purple, while the corollas of mature flowers are light blue (rarely white or pink). The pedicels of the flowers are greyish green to purple, terete, and up to ¼" (6 mm.) long. The blooming period occurs from mid- to late spring, lasting about 3 weeks. Afterwards, the flowers are replaced by 4-lobed fruits (schizocarps), which contain the nutlets (4 nutlets per flower). The small nutlets are dark brown, ovoid, and flattened on one side; their surfaces are minutely wrinkled or pitted. The root system consists of a taproot. This plant often forms colonies. Cultivation: The preference is light shade to partial sun in moist areas with rich loamy soil. This plant develops very quickly during the spring after danger of hard frost has passed. Its foliage dies down by mid-summer. [图片]Range & Habitat: Virginia Bluebells is a fairly common plant that occurs in most counties of Illinois (see Distribution Map), where it is native. Habitats include floodplain woodlands, bottomland woodlands, mesic woodlands, and wooded bluffs. Sometimes this wildflower forms sizable colonies in semi-shaded floodplain areas along rivers or streams, where it often competes with Wood Nettle (Laportea canadensis). It is also cultivated in flower gardens. Faunal Associations: The flowers are cross-pollinated by long-tongued bees primarily, including honeybees, bumblebees, Anthophorid bees (Anthophora spp., Synhalonia spp.), and mason bees (Osmia spp.); these insects obtain nectar and/or collect pollen. Other visitors of the flowers include the Giant Bee Fly (Bombylius major), butterflies, skippers, and Sphinx moths, including a hummingbird moth (Hemaris thysbe). This group of visitors suck nectar from the flowers. Halictid bees and Syrphid flies sometimes visit the flowers, but they are too small in size to be effective pollinators. In some areas, the Ruby-Throated Hummingbird has been observed to visit the flowers. White-Tailed Deer browse on the foliage occasionally during the spring. When this plant forms large colonies, it provides protective cover for many kinds of wildlife during the spring. [图片]Photographic Location: A moist wooded area of Busey Woods in Urbana, Illinois. Comments: It is easy to see why Virginia Bluebells (Mertensia virginica) is a favorite woodland wildflower. The pastel colors of the flowers and foliage are soft and soothing. There are other Mertensia spp. in the United States with a similar appearance, but they occur north or west of Illinois. They usually have smaller flowers and/or pubescent foliage.
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