Wheat field management technology in autumn and winter

First, cover the ditch and keep the wheat field in good condition. When the planting time is too late to open the ditch, the field ditch should be opened in time and combined with the ditch to supplement the wheat seedlings (seedlings) to prevent the seed (root) from being exposed, losing the dead, and guaranteeing the energy of the stain. Rows, drought and irrigation can provide wheat seedlings with a good soil moisture environment. Where conditions permit, crop straw, rice bran, bran, etc., can be covered on the surface, which can play a role of better conservation, warming, and enhancement of soil organic matter, which is beneficial to the emergence and growth of wheat seeds. Second, make up the fertilization material and promote the transformation of the seedlings. Late sowing and rush sowing will inevitably affect the pre-winter growth of wheat seedlings and the normal application of basal fertilizer, resulting in thin wheat seedlings before winter, insufficient tillering, lack of fertilizer in spring soil, and will seriously affect the formation of yield. For those fields where basal fertilizers are insufficiently applied or the sowing date is late, fertilizers should be applied early to promote the transformation of the seedlings. The tiller fertilizer can be used in combination with wax fertilizer during the wintering period. The wax fertilizer should use high-quality organic fertilizer, and the dosage per acre is about 3 square meters. For those plots that did not apply wax fertilizer or wax fertilizer, the amount of the plots, such as seedlings, was poor, and the spring topdressing time should be appropriately advanced, and 4-5 kg ​​urea should be applied per mu during the returning green period. Third, cultivator. The cultivator has a variety of effects, such as the elimination of compaction, grass weeding, protection against drought, increase of temperature, promotion of growth, and prosperous control. After rainfall, irrigation, and in the early spring season, wheat should be cultivated as much as human resources permit. In particular, late-seeding wheat should be ploughed in time, and it is necessary to prevent breakage of roots and burial of wheat seedlings. Fourth, reasonable irrigation. In the province, wheat is generally not required to be irrigated after sowing until returning to green jointing. However, under conditions of continuous drought and severe shortage of soil moisture, it is necessary to actively fight drought irrigation to ensure that wheat seedlings grow robustly. Where conditions permit, high-yield fields can irrigate winter water, which is conducive to keeping seedlings overwintering and the formation of high-yield groups. Fifth, pay attention to prevent prosperous growth. Large sowing and high temperatures in winter are likely to cause the problem of prolonged emergence of some plots, which is not only unfavorable to the development of young panicles, resulting in small grains and light weight, but also increases the risk of lodging and freezing damage. For this part of the plot, Field management measures should be taken actively to control the growth. Pre-winter repression, deep cultivator, cultivator can reach a depth of about 10 cm; use Ma Maifeng, chlormeine, paclobutrazol and other agents for chemical control; and control the application of fertilizer, spring fertilizer time should be postponed until jointing, booting period. Six, do a good job of prevention and control of pests and weeds. After emergence, we should take advantage of the warm weather before the winter to carry out chemical weeding to prevent excessive weed control after spring. Broad-leaved weeds can be used to control its long-, superstar or a good thing and other agents, weeds should be used to control weeds, hummer and other agents, the best time before weeding in winter wheat 3-5 leaf stage. Pests and diseases should also be forecasted and prevented as soon as possible. The disease focuses on the control of scab and powdery mildew. Gibberella spp. should pay close attention to the application of pesticides at the beginning of flowering. Use 80% carbendazim superfine powder 100 g or 40% carbendazim suspension 150 g water and 40 kg evenly mist per acre, and continue high temperatures after spraying. In wet weather, it should be sprayed again every 5-7 days. Powdery mildew When the diseased leaf rate reaches 10%, use 20% Trifenin Emulsion 50 ml per mu or 15% Triadimefon wettable powder, 75 g per mu water spray 60-80 kg.

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