After the wheat enters the return-to-green jointing season, it is a crucial period for the formation and determination of yield. Therefore, the management needs to focus on the maximum requirements for fertilizer and water production and the period of wheat production, and grasp key management measures in order to capture the bumper harvest of this year's wheat crop. Lay the foundation.
I. Scientific fertilization and raising awareness of the importance of adding joint-stocking and panicle-fertilizer
According to recent surveys by Guanyun Station, many farmers have applied fertilizer to wheat fields in January-February and believe that no further fertilizers can be applied later on. Otherwise, it will cause greediness and lateness. This traditional practice of applying winter wax often causes With premature senility, there is an increase in ineffective childbirth, and the fertilizer utilization rate is low. Nutrients have been consumed during grain filling, resulting in spikelets, light weight, and low yield. The scientific fertilization should be applied from the end of March to early April to replant jointing and booting fertilizer, normal growth of wheat in urea application of 10-15 kg per mu, or 45% of compound fertilizer 20 kg + 5 kg of urea, for late growing weak wheat should be In two applications, 10 kg of urea was applied before and after April 5, and 10 kg of urea was applied before and after April 10.
Second, promote the application of resistance cultivation techniques
1. Chemical protection
The best time for applying biochemical preparations to control growth and prevent lodging is from late March to early April. The principle is to shorten the length of the 1-3 basal basal parts and promote internode sturdiness and robustness. 50 ml spray, good anti-fall effect.
2, prevent stains, drought
Timely dredge a set of ditch inside and outside the field to achieve energy irrigation, prevent waterlogging, and meet the critical period of wheat water demand in the dry season, with key irrigation: jointing and booting water (from the end of March to the beginning of April), heading and flowering water ( In late April-early May, it will help maintain the roots, increase the vitality of the root system, and ensure the normal growth of wheat from the boot to the grain filling stage.
3, improve grain weight, prevent premature aging, prevent high temperature, mature, anti-dry hot wind
The wheat break-filling period is the key period for determining the yield. Therefore, it is particularly important to strengthen the management during this period. The key to management is to ensure the nutrient and root activity of the three functional leaves of wheat. The best method is to use extra-root fertilizer. The principle of yield increase is to supplement quick-acting nutrients, enhance foliar nutrition, make up for root nutrient deficiencies, promote root vigor, delay leaf senescence, increase grain, increase weight, prevent premature aging, and prevent high temperature from ripening. The effect is obvious, and 1% urea solution can be used. “Spring Spring Eight Eight Eighth†sprayed once during the breakout period, combined with disease prevention and pest control to conduct root-spraying fertilizer 1-2 times, and the input cost of mu was low, but the yield increase effect was significant, generally increasing production by 10-15%.
Third, comprehensive prevention and control of pests and weeds
1, do a good job in the spring of addition: weeding should be in the end of March to grasp the average temperature in the day before the jointing of wheat stabilizing above 5 °C and early removal, after jointing in addition to a large impact on wheat yield, can be removed manually.
2, according to the characteristics of the occurrence of pests, integrated control of wheat sheath blight, powdery mildew, head blight, grasshoppers, wheat spiders, etc., the wheat flowering rainy weather should focus on the prevention and treatment of head blight.
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