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Wang Changmai and Late Broadcasting Wheat Field Management Measures
This year, the proportion of long seedlings and delayed seedlings of wheat flourishing in our province is relatively high, and field management measures should be taken in spring. Prosperous seedlings are mostly dryland wheat and early sown rice and bran, mainly due to the early sowing date and high temperature at the early growth stage, which leads to large seedling age and the formation of vigorous seedlings; and the large seeding rate, soil moisture after sowing is better. The high emergence rate led to large populations forming vigorous seedlings. For the prosperous wheat fields, fieldwork in the spring is mainly done in three areas. (1) Repression control seedlings. The spring temperature rises and the wheat seedlings resume their growth. After the growth of the wheat seedlings is suppressed, they are suppressed by the stone scorpion or the suppressor. The general suppression of the Wangmiao Tian once occurs. The over-strength Miao field can be suppressed again after 5 to 7 days after the first repression. (2) Strict control of returning green manure and replanting jointing and panicle-fertilizer. Before the jointing, strictly control the fertilization. Increased control groups. When the field of wheat seedlings in the jointing stage has apparently dropped yellow, 45% of the three-component compound fertilizer and 15 to 20 kg of urea and 8 to 10 kg of urea are applied per acre, and the grain weight of the panicle is promoted. When soil fertility is insufficient during fertilization, water should be supplemented by irrigation immediately after fertilization. (3) Controlling lodging and lodging. If the group is too large and the repression effect is poor, there is a risk of lodging, and the growth regulators such as paclobutrazol may be sprayed before jointing. Delayed seedlings are mainly rice buckwheat, especially in the japonica rice region. Due to the promotion of late-maturing japonica rice varieties and the planting area of ​​direct-seeded rice, rice harvested too late, resulting in late planting of wheat. Late sowing wheat generally has higher sowing volume. At present, the number of seedlings in most plots is relatively sufficient, and the technique of single stalk cultivation should be adopted. For late sowing of wheat, the spring field tube mainly performs two aspects of work. (1) Be careful with returning green manure and reapply jointing fertilizer. If the number of field crops can reach more than 90% of the local optimum number of panicles, it is not appropriate to return green manure. Instead, it should be applied at the jointing stage and when the small field tillers begin to apparently die, 15-20 kg of compound fertilizer per mu and 6-8 of urea. kg. If the number of seedlings in the field when returning to green is too small, the green fertilizer should be promptly applied to promote delivery, and urea should be applied at a rate of 8 to 10 kilograms per acre, and urea should be applied at 5 to 10 kilograms per acre for the jointing period. (2) Controlling lodging and lodging. Fields with too many seedlings and lodging risks may be sprayed with paclobutrazol and other growth regulators before jointing. In addition, the current prosperous wheat fields and late-broading wheat fields should pay attention to clearing the ditch, prevent waterlogging, and timely control of pests and diseases, and strengthen the prevention and remediation of cold and winter frost damage.