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ritau
2020年06月16日
ritau
The pineapple (Ananas comosus) is a tropical plant with an edible fruit and the most economically significant plant in the family Bromeliaceae. The pineapple is indigenous to South America, where it has been cultivated for many centuries. The introduction of the pineapple cultivation to Europe in the 17th century made it a significant cultural icon of luxury. Since the 1820s, pineapple has been commercially grown in greenhouses and many tropical plantations. Further, it is the third most important tropical fruit in world production. In the 20th century, Hawaii was a dominant producer of pineapples, especially for the US; however, by 2016, Costa Rica, Brazil, and the Philippines accounted for nearly one-third of the world's production of pineapples. Pineapples grow as a small shrub; the individual flowers of the unpollinated plant fuse to form a multiple fruit. The plant is normally propagated from the offset produced at the top of the fruit, or from side shoot, and typically mature within a year. Raw pineapple pulp is 86% water, 13% carbohydrates, 0.5% protein, and contains negligible fat (table). In a 100-gram reference amount, raw pineapple supplies 50 calories, and is a rich source of manganese (44% Daily Value, DV) and vitamin C (58% DV), but otherwise contains no micronutrients in significant amounts. [图片]*How to grow 1. Pick out a fresh pineapple. Look for one with firm, green leaves that have not turned yellow or brown. The skin on the fruit should be golden brown and firm to the touch. Smell the pineapple to see if it's ripe: it should emit sweet, heady smell indicating that you've chosen it at just the right time to start a new pineapple plant. -Make sure the pineapple isn't underripe. It needs to be ripe in order to produce another pineapple. -Check to make sure the pineapple isn't too ripe by tugging a little at the leaves. If they come right off, the pineapple is too ripe to plant. Be gentle. -Make sure the pineapple doesn't have scale insects around the base of the leaves. They look like small grayish black spots. 2. Twist the leaves off the top of the pineapple. Grasp the body of the pineapple with one hand and use the other to grab the leaves at the base and twist them off. This method ensures that the base of the leaves will stay intact. It will be attached to a minimum amount of fruit, which you don't need in order for the plant to grow. -If you're having trouble twisting off the top, you can slice off the top of the pineapple. Slice off the excess fruit around the root. -Make sure the base, the very tip of the area where the leaves join together, stays intact. New roots will be sprouting from this, and without it the plant won't grow. 3. Strip off some of the lower leaves to expose the stem. This helps the stem sprout roots once it is planted. Strip until a few inches of the stem are exposed. Cut away any remaining fruit without damaging the stem. 4. Turn it upside down and let it dry for a week. The scars where you made a cut and removed the leaves will harden, which is necessary before you take the next step. -At this point, you can plant the crown into the soil, if you would like. While some people prefer to soak the pineapple crown first, it is not necessary. 5. Fill a large glass with water. The mouth of the glass should be large enough to fit the pineapple crown inside, but small enough so that you can prop it up to keep it from getting completely submerged. 6. Stick a few toothpicks into the pineapple crown. Place them across from each other near the top of the stem. Push them in just far enough so that they'll stay in place. These toothpicks are used to suspend the pineapple crown in the glass of water. 7. Put the crown in the water. The toothpicks should rest on the rim of the glass. The stem should be submerged in the water, and the leaves should stick out the top. [图片]8. Place the glass in a sunny window and wait for the roots to sprout. It should take several days or up to a few weeks for white roots to poke out and begin to grow. -Keep the plant away from extreme temperatures. Don't let it get too hot or too cold. -Change out the water every few days to prevent the growth of mold. 9. Prepare a pot of soil for the crown. Fill a 6-inch pot with light garden soil that has a 30% blend of organic matter. This has the right blend of nutrients for the pineapple plant. 10. Plant the pineapple crown in the pot. Plant the crown when the roots are a few inches long. Wait until they've gotten long enough to take root in soil. If you plant the crown too early it won't do well. As you plant it, make sure that the base of any remaining leaves are just above soil level. Press the soil firmly around the base of the crown without getting any soil on the leaves. 11. Keep the plant moist and warm. It needs a sunny, warm and humid environment where the night temperatures won't drop below 65ºF (18ºC). If conditions are dry, mist the plant regularly. -You can keep the pot outside if you live in a warm climate. If you have cool winters take it indoors during the winter season and keep it in a sunny window. It's important for the plant to get a lot of sun all year round. -To help the rooting process, you can slip a plastic bag over the top of the pot. This will create a mini-greenhouse effect. 12. Give the plant food and water. Water the soil lightly once a week. Fertilize the plant with half-strength fertilizer twice a month during the summer. 13. Look for flowers. It can take several years, but eventually a red cone should appear from the center of the leaves, followed by blue flowers and eventually a fruit. It takes about six months for the fruit to fully develop. The pineapple will grow from the flower, above ground, in the center of the plant. [图片]
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Miss Chen
2020年06月16日
Miss Chen
姬玉露是一种多肉植物,它受到很多人的喜欢,人们在养护姬玉露的时候,会把它养护在客厅,那么姬玉露如何养才能爆盆? [图片]养护姬玉露爆盆的方法 想要把姬玉露多肉养护的更好,需要注意养护温度,一般把温度控制在十到三十五度之间是最好的,我们需要适当给玉露做好保温工作,在夏季养护姬玉露多肉,需要把它养护在阴凉位置,这样姬玉露才有可能爆盆;湿度对姬玉露的爆盆也很重要,姬玉露喜欢在湿度高的环境里生长,这样可以让姬玉露生长的更加旺盛,特别是在炎热的夏季,可以向姬玉露周围喷水,养护姬玉露使用的土壤最好是疏松透气性好的,这样它才能爆盆。 当然我们也要给姬玉露适当浇水施肥,保证土壤土壤的湿润性,不能让土壤特别干燥,当然我们也要给姬玉露适当施肥,让姬玉露的叶子更加翠绿,更加有光泽,但土壤不能有积水,避免有烂根情况出现,一般给姬玉露施肥,都是在姬玉露生长旺期的时候施肥。 [图片]其实姬玉露是比较耐旱的植物,我们在养护的时候,不需要经常浇水,但浇水的次数也不能太少,如果发现土壤干燥,必须及时补充水分,让土壤微微湿润;光照对姬玉露爆盆也有很大影响,虽然姬玉露喜欢阳光,但也不能让阳光直射姬玉露,容易对姬玉露叶片造成是损伤,在土壤的选择上,最好选择肥沃、排水性好的土壤。
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ritau
2020年06月15日
ritau
Spider mites (Class Arachnida) are tiny sap-sucking plant pests. They attack the underside of leaves and suck the vigor from the plant; with large infestations they may even kill a plant. As soon as you spot an infestation, it's time to take charge and get rid of them! You can use biological control methods or chemical control methods to deal with a spider mite infestation. 1. Look at the surface of the leaves. If your plant is indeed infested with spider mites, the leaves may have yellow blotches on them. When light falls on the leaves, you may see a silvered look or even streaks of bronze or silver. -While mites usually attack the underside of leaves, they can sometimes get greedy and also eat the upper side of leaves and flowers. Eventually, the mites will suck holes right through the leaves - providing the most obvious evidence of infestation. -Even if you can't find holes in the leaves, your plant may still have spider mites, so keep an eye out for other signs of infestation. -Other signs of mite damage include distortion, deformation, wilting, spotting, streaking or discoloration on the surface of the leave. If the mite damage gets particularly bad, the leaves may start to fall off. [图片]2. Check for white webbing on the plant. This is a giveaway sign of some spider mites. The webbing usually clusters around feeding areas. Note that not all species of spider mite will produce webbing though. 3. Confirm the presence of spider mites. Spider mites are so small, they can be very difficult to see. However, one method you can use to confirm their presence is to take a sheet of white paper, place it beneath the plant you suspect to be infested and and lightly shake the stem of one of the leaves. -A certain number of the spider mites should fall onto the paper. They can be viewed more easily with a magnifying glass. -Spider mites come in a variety of colors, including red, green, yellow and brown. They have eight legs and tend to move quite slowly. -Be on the lookout for spider mites with spots on their backs - these are known as two-spotted spider mites and can be particularly hard to get rid of. 4. Be particularly vigilant with certain species of plants. There are some plants which spider mites seem to favor more than others. -In particular, pay attention to possible infestations on miniature roses, fruit trees, bananas, potted begonias, beans, mint, broad-leafed weeds, strawberries, frangipani and indoor houseplants. -Be aware that the two-spotted spider mite has been known to infest over 100 different species of plant. [图片]5. Be especially alert during dry and dusty weather conditions. These are the conditions where spider mites can cause the most damage, as they are thirsty and are seeking moisture from the leaves of the plant. This also means they are very attracted to anything grown under glass, including plants sitting inside on your windowsills.
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Miss Chen
2020年06月14日
Miss Chen
高砂之翁多肉想要爆侧芽,就要为它提供充足的光线,还要为它提供合适的水肥。具体内容如下: [图片]高砂之翁爆侧芽的方法有哪些 光照:高砂之翁多肉在养护的过程中,想要爆出侧芽应该为它提供充足的光照。它属于一种喜欢阳光的植物,而且是春秋型的多肉,所以,尤其是春秋季节一定要为它提供充足的光照,这样更有利于它进行光合作用,有利于爆出侧芽。 肥水:高砂之翁多肉想要爆出侧芽,还要为它进行合理的施肥和浇水。多肉的特点往往都会不耐水涝,浇水的时候最好保证不干不浇。日常浇水的时候,则应该根据土壤的干湿情况来进行浇水。而它对肥料的需求其实并不高,只要在换盆时在土壤中加入适当的底肥,它就可以生长的很好了。 温度:高砂之翁多肉想要爆出侧芽,对于温度的控制也很重要。要知道它喜欢温暖的环境,所以在养护它的时候,注意生长温度要控制在20摄氏度左右。当夏季阳光过强的时候,最好将它移到凉爽的环境中央行,冬季温度过低的时候,则应该移到室内温度适宜的环境中养护。 [图片]在养护高砂之翁多肉的时候,要为它提供充足的光线,这样更有利于它进行光合作用。另外,还要为它进行合理的施肥和浇水,这样可以促进它生长,更有利于它的侧芽生长。想要让它生长的更旺盛,生长期适当的施肥也是非常重要,最后夏冬两季还要控制好温度。
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