Key points of wheat field management in winter

Winter wheat from sowing, emergence to heading, this period of wheat field management can be divided into several stages: from emergence to winter is the first stage for winter management; from green to heading is the second stage for spring management; from heading to maturity is the wheat yield formation period, is the key time to determine the yield, this is the third stage for the late stage.

The main tasks of wheat field management in winter are to cultivate strong seedlings, preserve seedlings, homogenize seedlings, overwinter safely, and increase tiller number. Strong seedling standard, is tiller more, stout, leaf width color deep, root system developed. This is the basis for increasing panicle number per plant, striving for large panicle and large grain, and is an important guarantee for obtaining high yield.

Wheat from heading to maturity is the late stage of wheat growth. At this time, do a good job of wheat root protection and leaf protection to prevent premature aging. First of all, we must consider the problem of water supply. At this time, the soil moisture in the field should be maintained at 65%~80%. If there is more water, the soil air is insufficient and the roots are premature. Less water means less water, which will lead to reduced production.

Check seedlings for re-seeding? After emergence, check seedlings in time, supplement seedlings, ensure complete seedlings, hoe in time, break hardening, preserve moisture and warm up, promote root system to tie down, maintain basic seedlings up to 150 ~ 180 thousand, and control the population before winter at 600 ~ 800 thousand.

Supplementing winter water? Irrigation of winter water is conducive to maintaining seedlings through winter and maintaining good moisture content in early spring after the year, so as to postpone the first fertilizer in spring and create conditions for nitrogen fertilizer to move backward. The irrigation time should be flexibly controlled, and the poor moisture content should be irrigated in advance to promote tiller before winter and ensure sufficient pre-winter population.

Cultivate and hoe? For the wheat field irrigated with water, hoe and loosen the soil in time after the wheat seedlings are complete, break the hardening, improve the ground temperature and eliminate weeds; when the growth is prosperous, the plant is too high to exceed 27 cm, and the population per mu exceeds the reasonable population (the population of large panicle type is required to reach 1.8~2 times of the planned panicle number per mu during winter, and the medium and multi-panicle varieties are required to reach 1.2~1.5 times of the planned panicle number per mu), measures such as suppression, chemical control or deep cultivation and root cutting shall be taken in time to control the population.

Chemical weed control? In the middle and late November, in the field where weeds occur, 10% tribenuron-methyl WP 10~ 15g is used to control them; in the field where serious weeds such as catnip and euphorbia occur, 200g/L chlorfluroxypyr EC 30~ 40ml and 10% tribenuron-methyl WP 10~ 15g is used to control them; 50~ 60ml 6.9% Puma concentrated emulsion and 10~ 15g tribenuron-methyl wettable powder were used to control wild oat. Wang aiping

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