The main problems of spring wheat growth are as follows: first, prosperous growth, late spring cold, or large populations; second, lack of fertilizers in time, and yellow and weak seedlings; third, poor control of the sowing date and seeding rate, and irregular growth of wheat seedlings. A few late and weak seedlings appeared; fourth, there were more weeds in the wheat field, and the overwintering base of diseases and insects was large. In terms of specific management measures, the entry point should be hoeing to increase temperature, protecting moisture and promoting seedlings, and perform classified management by region, time period, seedling situation, and moisture situation, so as to realize the transformation and upgrading of seedling situation as soon as possible.

Transforming flourishing long wheat seedlings into strong seedlings The spring management of flourishing wheat fields should take control-oriented measures. One is to rake the wheat as early as possible, ventilate and light, and to prevent pests and weeds at the same time; the second is to suppress timely; the third is to spray chemical control agents to control prosperity and prevent collapse; the fourth is to determine the spring topdressing watering time according to the seedling situation; the fifth is to advance Formulate disaster prevention measures to prevent the hazards of "cold spring".

Scientifically fertilize and water the strong seedling wheat field, promote the combination of control; if the soil fertility is poor, combine watering to reapply the rising fertilizer during the rising period; in the yellow weak seedling wheat field, use the promotion as the main, take advantage of the moisture to apply nitrogen fertilizer when the wheat returns to the green period; dry land For wheat fields, spring management should be based on preserving moisture and increasing temperature. After the soil freezes in early spring, topdressing should be done while ditching or when it rains.

Use hoeing to suppress, increase the temperature and protect the moisture. To promote the early development of seedlings in various wheat fields, hoeing should be done during the period of returning to green. When hoeing, you should pay attention to the location and seedling conditions. For late-cropping wheat fields, hoeing should be shallow to prevent root damage and smashing of seedlings; for long wheat fields, deep cultivating should be practiced before and after the rise period. All wheat fields with a lot of scum and mild soil and flourishing wheat fields can be suppressed in early spring. Pay attention to low-lying land and late cropping wheat not suitable for suppression. Suppress first and then hoe, to achieve the effect of improving the moisture content of the Panasonic and lowering the moisture content.

Comprehensive prevention and control of diseases, insects and weeds Wheat powdery mildew and stripe rust have tended to be more serious in recent years. Sheath blight, wheat aphid, wheat spider, yellow dwarf, bushy dwarf, wheat sawfly and underground pests cannot be ignored. In order to improve efficiency, we should seize the opportunity to spray and prevent more. Chemical weeding should be based on the type of weeds. The types of herbicides should be selected according to the type of weeds. For wheat fields where broad-leaved and monocotyledonous weeds are mixed, two herbicides should be used in combination. And strictly follow the use concentration and technical operating procedures to avoid phytotoxicity. Early action should be taken in the management of wheat fields in spring, and various technical measures should be put in place to ensure a good summer grain harvest. '

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