After the young leaves of grapevine grow to 8- 10 leaves, apply ammonium sulfate or urea once every 15-20 days, 20g per plant. Every fertilization is carried out with water or rainfall; After the end of June, phosphorus and potassium fertilizer were applied twice, each plant was 15g, and applied into a hole about 15-20cm or dug into an annular ditch about 10cm deep.
In winter, the application of base fertilizer (spring fertilizer) compound fertilizer to grapes is increased to per mu 150 kg, and the application of microbial fertilizer is increased to 50- 100 kg. In the middle of each topdressing, 0.3%-0.5% mixed solution containing Nessler's 778, nucleotide, chitin, alginic acid, trace elements, urea and potassium dihydrogen phosphate is injected at one time.
Grape is a fruit with high quality, high yield and high efficiency, and it is easy to lack elements such as iron, magnesium, sulfur, boron and zinc during its growth and development. In order to cultivate high-quality and high-yield grapes, trace elements such as calcium, magnesium, sulfur, iron, zinc, silicon and boron (such as calcium nitrate, calcium ammonium nitrate, potassium calcium nitrate, ferrous sulfate, magnesium sulfate, potassium magnesium sulfate, ammonium sulfate, silicon, calcium potassium, borax and boric acid, etc.) should be supplemented in time. ), and don't use too much hormone.
It is necessary to supplement soil fertilization by foliar spraying, combine sufficient base fertilizer with timely topdressing, endow crops with the concept of "humanization", implement "nutrition catering", pay attention to fertilization management, water conditioning and pest control from harvest to dormancy, rationally control water, supplement nutrients, control pests and diseases in autumn and winter, clean the countryside, and implement environmental technical measures of fertilization, defoliation, dormancy, pruning and pest control.
Extended data:
Introduction to Grape Tree Israel is rich in grapes, which can be made into wine and raisins. Grapes are purple and green, and can be used to make wine. Now vines are planted all over China.
Grape pruning:
1. Pruning time: Pruning can be completed in areas that are not cold in winter, 2 weeks after defoliation and before rain in February of the following year. Pruning is best carried out in areas prone to freezing injury after severe cold, and areas that need to be planted in winter can be pruned after defoliation, so as to get off the shelves in time for cold protection.
Weibei area of our province should be pruned from February to 1 month in 65438, and Guanzhong area should be pruned from February to the end of February of the following year. If it is too late, it should cause bleeding, affect the tree's potential, and even cause the whole plant to die. In northern Shaanxi, pre-cutting can be carried out before covering the soil to prevent cold, and more branches and vines can be left appropriately, and then cut when unearthed and put on shelves the next year.
2. Pruning method: According to the growth of vines in this area, we should adhere to the principle of keeping more strong branches and less weak branches, too dense, sparse and sparse. The cutting length depends on the number of buds left on the fruiting mother vine. Cutting length is generally divided into three types: short branch cutting, leaving 2-3 buds, middle branch cutting, leaving 4-7 buds, and long branch cutting, leaving 7- 1 1 bud. There are also very short cuttings here, only 1-2 buds are left, which is very long.
References:
360 Encyclopedia-Grape Tree