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张祥明
2018年04月20日
张祥明
[图片]一、冻伤引起的 在众多引起它叶子烂掉的原因中，这应该是最可能的。因为虎皮兰很喜欢温暖，如果在冬天你没有注意给它保暖，让室内温度过低，这样就会将它的根部冻坏，叶子也会烂掉。 解决方法：此时我们就要用剪刀将它的烂根部分剪去，并用药物消毒，之后注意保暖，最好将温度控制在16到24度之间，万不可小于5度了。 [图片]二、浇水过多引起的 在它生长时，有的花友可能给它频频浇水，再加上它本身根吸收能力有限，所以长时间下去，根部就会呼吸受阻，此时根就开始烂掉，叶子也会跟着烂了。 解决方法：那此时我们不但要剪去烂叶烂根，还要控制浇水，一般就是在冬春时，要让土壤干燥些，到了生长期就可以等土壤干透了再去浇水，并且浇水时还不可让水浇到叶子上，不然也是会烂叶的。 [图片]三、花土不透气引起的 我们在最初选择时，可能没有使用疏松透气的花土，在养殖的时候就容易引发板结，那么根和叶也就容易发烂了。 解决方法：此时我们就要重新更换土壤，通常以培养土、泥炭土为主，只要不是黄泥土，基本上都是可以的，之后再做好疏通排水就不会再烂叶了。 四、补肥过多引起的 加肥时，如果使用浓肥或用量过多，就会让营养过剩，这时候多余的营养就会烧伤根部，让根部烂掉，那叶子自然也会跟着烂掉了。 解决方法：所以此时我们最好将烂根剪掉，并加水稀释多余肥料，以后做到薄肥勤施就可以了。 [图片]
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权问薇
2018年04月20日
权问薇
[图片]发财树长出徒长枝，赶紧剪掉！ 冬天普遍光照不足，发财树特别容易冒出很长的枝条，这些枝条不仅让发财树的整个株型变得难看，而且还会消耗养分，影响发财树的正常生长。 修剪前： [图片]修剪后： [图片]茉莉长出嫩枝芽，赶紧剪掉！ 大部分花友，家里温度都在15℃以上，导致茉莉在冬天也会生长，经常会在主干和老枝条上长出不少嫩芽。这些嫩芽即使经过一个冬天，也不可能长成木质化枝条，大部分都被冻死了，所以要及时剪掉。 茉莉主干上的徒长枝和嫩芽全都剪掉： [图片]徒长的嫩枝剪下来： 新长的嫩芽挖出来： 茶花长出枯枝败叶，赶紧剪掉！ 茶花最常得枯枝病了，一旦得病，叶片颜色从绿变成黄色，枝条也会不断枯萎，严重的整个植株都得死亡！所以，看到茶花的枯枝败叶，一定要赶紧剪掉，之后集中销毁。 修剪前： [图片]修剪后： 记得在伤口上涂抹点多菌灵，1个月内别让伤口沾水即可。 [图片]杜鹃开花后花托，赶紧剪掉！ 杜鹃开花凋谢后，残花是没什么观赏性的，所以最好剪掉。但是不要将整个开花枝条全都剪掉，只需要将花托剪掉即可。 修剪前： [图片]修剪后： [图片]栀子花的平行枝，赶紧剪掉！ 栀子花上如果出现了平行枝条，那势必有一个枝条的长势会弱于另外一个枝条，所以要及时将平行枝中弱一些的枝条剪掉，只留下粗壮的枝条即可。 修剪前： [图片]修剪后： [图片]文竹的过密枝，赶紧剪掉！ 不少花友养文竹，都希望文竹的株型挺拔密集，但是有时候，文竹会长出过密的枝条，让整个株型看起来乱糟糟的，此时就需要进行修剪一下，将文竹过密枝条剪掉，从而避免养分消耗，让文竹株型更美观！ 修剪前： [图片]修剪后： [图片]月季长出交叉枝重叠枝，赶紧剪掉！ 为了月季安稳过冬，一般都会在冬天对月季进行一次重剪，将那些交叉枝、重叠枝、病虫害枝等剪掉，促使月季减少不必要的养分消耗，安全度过冬天。 [图片]1、如果是长势不健壮的植株，可以剪去全株的2/3，只保留3-4个一年至三年生的主枝，基部留下20cm左右的主干即可，这种方法一般适用于大花盆栽月季。 [图片]2、家里长势旺盛的月季苗，可进行中度修剪，剪掉主干的1/2即可，这种方法主要适用于那些萌发枝条比较容易，开花次数多的品种。 [图片]3、长势茁壮发育正常的小苗或中苗，只需要稍微轻剪一下，将那些交叉枝、重叠枝剪掉就足够了。 今天的修剪， [图片]花花就介绍这些了。
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张祥明
2018年04月20日
张祥明
1、病害问题 （1）具体原因：主要有一种病害能够造成这种现象，叫做“叶斑病”，养过植物的朋友一定听说过它。这种病比较容易分辨，若是一开始叶子上出现一些边缘颜色特别深的斑点，之后它们又慢慢扩张，并且感染了周围其他的植株，那么一般就是这种病了。 [图片]（2）解决措施：第一，当然是得将病叶子都剪下处理好，注意剪子要经过消毒处理。之后，要喷洒药液。不同的情况需要喷洒不同的种类。若是症状较轻，那么可喷多菌灵。若症状非常严重，那么要喷百菌清，其他的就不管用了。每隔半月喷一次就行。之后的养护也要注意。比如，不要使环境太密闭，多通风。另外，水分不能多。每月要用一两次液肥，增加土壤中的养分。 [图片]2、养护环境问题 （1）具体原因：具体来说，主要有以下的三种同时存在或者某一种特别严重。第一就是水分太多；第二是光照太强；第三即温度过低。 （2）解决措施：若是不确定到底是哪个出了问题，那么先得观察一下周围环境，是哪一环有问题，然后再相应进行调节。除了这个，还要注意不要将茶叶、咖啡、牛奶等弄土壤中，很容易滋生病虫。 [图片]
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张祥明
2018年04月20日
张祥明
[图片]1、水分太多 （1）具体原因：总体来说，这种植物喜欢的是中湿的环境。不可积水肯定是首要的要求，给水不可以太勤。不然，就会导致根部的呼吸受到阻滞，进而就没办法吸收足够量的O2。那么，叶片就会开始慢慢发蔫。 （2）解决措施：我们需要赶在情况变得非常严重、没有办法补救之前采取对应措施。一定不可积水。可以根据植株成长所处的具体时期来调。跟其他品种不一样的是，它在冬天的成长很快，所以这个时候适当多给些。不过，在其他的季节，就需要减少些，具体做到“见干见湿”就行。 [图片]2、水分太少 （1）具体原因：这种情况多发在放置于办公室里的植株身上。因为它们一般没有专门的人员给它们定期浇水。那么，偶尔浇一次，量也会非常少。水分仅仅停留在表层，无法到根部。这样，就会导致叶打蔫。 （2）解决措施：跟第一种情况一样，科学地进行浇水就好。 [图片]3、暴晒导致 （1）具体原因：有的时候，植株所处的环境中光太强了，而且照射了很长时间，就会使得叶子中的水分越来越少。那么，它们就会显得越来越发蔫。 （2）解决措施：特别是夏季，一定得遮荫。要是及时的话，现象可能会缓解。 [图片]
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张祥明
2018年04月20日
张祥明
[图片]1、过涝或过旱 盆土长期过湿，会造成根系腐烂，从而使得养分不能充分吸收而产生叶片掉落的现象。像这种情况应该减少浇水次数，平日里多松土并保持通风，使水分散发出去，过段时间就会缓解。 如果浇水时不浇透的话，长时间下去会使它处于干旱的状态，根部无法正常吸收水、养分，导致叶片老化脱落，这时应及时浇水，但要控制浇水量，令其逐渐恢复后在转入正常浇水。 [图片]2、长时间缺肥或用肥过量 如果很久没用补肥换土，土中的营养物质被消耗完后会使得它缺乏养分，导致枝叶瘦弱。这时我们只要给它倒盆，换用新的疏松、肥沃的土壤，适当添加一定量稀薄的复合肥和腐熟液肥即可。 如果不小心施肥过量，应大量浇水，让过剩的肥料随水流出来，或者立即换盆，同样的方法冲洗土坨后，再重新栽入盆中。 [图片]3、炎热高温或荫蔽过度 发财树长期处于温度高或不见光的地方，也导致叶片脱落，这时应及时将其转移，挪于光线充足、温度适中的地方养殖，同时需要保证环境通风良好。 4、病虫害 叶片脱落的重要原因还有病虫害，它感染病菌后引起的叶斑病等，会使叶片发生病变，严重时整个叶字都会脱落。所以当发现叶片有不正常黄色斑点出现时，要及时喷药治疗。 [图片]
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张祥明
2018年04月20日
张祥明
[图片]1、病害问题 （1）具体原因：“白粉病”是困扰这种植物的巨大威胁之一。这是一种真菌性的疾病。发病的时候，最初产生一些小点儿。然后，慢慢就会发展成为一个白色的霉层，并呈现粉状。看上去，就像是叶子变白了一样。一般来说，下部的叶发病几率比上边大，背面会比正面多。如果是这样，那么大概就染了这种病。 （2）解决措施：首先，将已然染上了病的叶子剪下，并处理好。之后，将周围环境打扫干净，最好进行消毒。然后，就可喷一些药来治病，比如多菌灵等药液。以后的养护主要注意的是水分，不要太多，并且最好从盆边浇。另外，通风也很重要。 [图片]2、虫害问题 （1）具体原因：有一种虫子，叫“吹绵蚧”。它是白色的，若是生了这种虫子，那么看上去其叶子就会显得发白。 （2）解决措施：跟病害的处理差不多，将病叶处理掉。然后喷药，如氧化乐果等。另外，还可以通过生物方法，比如引放一些瓢虫等。 [图片]3、曝晒导致 （1）具体原因：有时候，经过长时间的晒，有些叶被晒伤了。那么，也可能出现叶发白，这也是有可能的。 （2）解决措施：最好放于有散光的地方，不要暴晒。同时，注重通风。 [图片]
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Miss Chen
2018年04月20日
Miss Chen
Tender turnip greens are for some a well-kept garden secret. While chard and kale are popular greens in the garden, some people are devoted to other greens such as mustard, beet or turnips. Healthy greens are not only delicious on the dinner table, they're important to the health of the whole plant. Turnips are prey to a number of pests and require careful attention to keep them free of insects. It is worth protecting turnip greens -- they are high in vitamins E and C, have usable calcium, folate and a full range of amino acids. [图片]Common Pests Turnips and other greens are especially bothered by several insect pests. Aphids are a number one culprit. They suck the sap from the plant. Cabbage loopers love turnip greens just as you do. Flea beetles can be a major problem. Take the time to learn what these turnip pests look like and how to spot the adults and larvae. This will give you an idea where to target your approach to getting rid of them. Garden Health Prevention is always the fist line of defense when it comes to any garden pests. Keep weeds away from your plants to reduce habitat for insects. Insects are interdependent, so if one type is encouraged by weeds or other foods they may like, the ones who prefer leafy greens may move in too. Keep the ground free of dead and dying plants and rotted vegetables to reduce their food. Keep your turnips well nourished with rich compost because healthy plants have more resistance to pests. Beneficial Insects Introducing beneficial insects to the turnip bed can reduce the population of harmful insects. Examples of these are ladybugs, green lacewings and beneficial nematodes. You can purchase them at some garden centers or through an online distributor. These are predator and parasitic insects that can help you battle the undesirable bugs on your turnip greens. Make your garden attractive to them by providing other foods they like such as flowers for nectar. Synthetic Pesticides The synthetic pesticides for turnips include spinosad, whose makers claim it has low environmental impact, long residual effect and is no harmful to beneficial insects. For aphids or whiteflies use pymetrozine. It is a direct spray specifically for this type of bug and can kill them quickly. [图片]Natural Insecticides Turnips can be benefited by an interplanting of some other plants. These discourage insects that target turnips. They include mint, onions and garlic or herbs like anise, chives and coriander. You can also combine household products to create a useful natural pesticide. A homemade horticultural oil can be made from soybean oil mixed with liquid dish-washing soap to suffocate the bugs. Some people simply spray them off with a hose. But if you do this, make sure to also remove them from the ground beneath the plant. Purchase diatomaceous earth at a garden center to dust on plants to deter aphids.
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Yeowww! Pintac
2019年12月07日
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Are those called Colorobie? And I’m sure that’s not spelled right.
Yeowww! Pintac
2019年12月07日
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Paprika?
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Miss Chen
2018年04月20日
Miss Chen
Zucchini and other summer squash can be grown in vegetable gardens throughout the United States, providing a good crop each year. Although the squash are considered easy to grow, the plants can suffer damage when not cared for properly. Yellow leaves are a sign of a potential problem in many plants, zucchini included. In some cases, overwatering may cause the problem. However, that is only one potential cause. [图片]Water Needs Zucchini need about 1 inch of water per week, the University of Illinois Extension reports. When rainfall does not meet these needs, the best technique for watering the squash is to provide one deep water per week. If you grow zucchini in a sandy soil, water more frequently but use less water with each irrigation, the University of Minnesota Extension recommends. Too Much Water Yellow leaves on a zucchini plant can be a sign of many problems, including too much water. Typically, leaves yellow as a result of wet soil following heavy rains when temperatures are cool or cold, the University of Minnesota Extension reports. Leaves also may appear dark green or brown, and many may wilt or die back, when temperatures drop. Other Causes Cold weather and too much moisture are among many potential causes for yellow leaves on a zucchini plant. Powdery mildew can also cause yellowing, typically on the plant's oldest leaves. Downy mildew can also cause yellowing, although typically in spots and splotches. Pests including the squash vine borer and squash bugs can make leaves yellow and wilt. Finally, plant viruses such as squash mosaic can lead to yellowing of leaves. [图片]Treatment and Care How to care for a zucchini plant with yellowing leaves depends on the cause. When the problem develops following a cold and rainy spell, the plant's health may improve without your aid as temperatures warm and the soil dries out. If the yellow leaves are pest related, you can remove visible pests and their eggs and larvae by hand when checking the plants; alternatively, try an insecticide applied at the base of the vines, suggests the Iowa State University Extension. Herbicides can help control mildew and other plant diseases.
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Miss Chen
2018年04月20日
Miss Chen
Acorn squash (Cucurbita pepo) is an annual vining winter squash plant that produces ribbed fruit with green or gold rinds. When harvested ripe, the fruits store for about three months. To determine if an acorn squash is ripe, consider the appearance and texture of its skin, the condition of the vine and the number of days since sowing. [图片]Skin Appearance An orange patch appears on the area of the acorn squash that rests on the ground when the fruit is ripe, and skin is matte. An immature acorn squash is shiny. As the fruit ripens, it loses its shine and looks dry and dull. Skin Texture A ripe acorn squash has a very tough skin. To test whether an acorn squash is ripe, try to pierce the skin with your thumbnail. Your nail won't easily leave a mark on a ripe acorn squash. Vine Condition As an acorn squash matures, the vine deteriorates. When an acorn squash plant turns yellow and dies back, the fruit are usually ripe. Harvest Time Acorn squash are usually ready to harvest about 80 to 100 days after sowing. The seeds are sown in spring after the final local average frost date, and the fruits mature as fall approaches. [图片]Unripe Fruit An unripe acorn squash doesn't ripen after harvest. Acorn squash fruit texture and flavor develops as the fruit ripens. Unripe fruit are watery and taste bland, and store badly. 'Jersey Golden Acorn' 'Jersey Golden Acorn' is an acorn squash variety that produces fruit that can be picked unripe without losing flavor. The flesh of this variety is sweet when the fruit is golfball-sized, and the skin is soft. You can eat unripe 'Jersey Golden Acorn' fruit raw or cooked. Fruit Harvest Harvest acorn squash by cutting the stem 1 inch from the fruit, and store the fruit in a dry place at 50 degrees Fahrenheit. An acorn squash fruit stores best at 50 to 75 percent humidity.
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Miss Chen
2018年04月20日
Miss Chen
Sweet potatoes are one of the most versatile and nutritious vegetables on the market today. They are a very common vegetable in many Asian cultures, though they have yet to catch on as much in the Western diet, as they are mostly thought of as a holiday food. A warm weather vegetable, sweet potatoes are grown all across the United States, but nowhere more so than these five states. [图片]North Carolina With the sweet potato as its state vegetable, it's no surprise that North Carolina is the No. 1 sweet potato producing state in the country. According to statistics compiled by the United States Department of Agriculture, North Carolina produced, on average, 5,260,277 cwt a year from 1990 to 2007. (A cwt is a unit of measurement used in agriculture, meaning one hundred weight). Louisiana Louisiana is known for many things: the birthplace of Elvis, Mardi Gras in New Orleans and Cajun food. It is not necessarily well-know for sweet potatoes, but it's the second-highest sweet potato producing state in the country, with an average of 2,795,055 cwt between 1990 to 2007. Since the sweet potato is a warm weather vegetable, Louisiana is able to grow sweet potatoes year-round. Louisiana agriculture is also composed of sugarcane, cotton and soybeans. California With its warm climate, California is an ideal state for growing many different fruits and vegetables, the sweet potato being one of them. California weighs in as the third highest sweet potato producing state in the country, with an average of 2,487,500 cwt between 1990 to 2007. California is also known for its raisins, dairy products, figs and olives. The state produces more than half the countries fruits, nuts and vegetables. [图片]Mississippi Coming in fourth in sweet potato production is Mississippi, with an average of 1,607,444 cwt from 1990 to 2007. Though most people don't associate Mississippi with sweet potatoes, the state is known for its agriculture, as its warm climate makes it ideal for growing cotton, soybeans, rice and other plants. Texas Last, but not least, Texas rounds out the top five list of sweet potato producing states, with an average of 492,888 cwt per year between 1990 to 2007. As the second largest industry in the state, Texas is known for its agriculture, especially its cattle ranches, wool and cotton production. The state also grows much of the country's corn, wheat and hay.
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