The Yangtze River Valley officially entered the winter from November 30, and until the beginning of March of the next year for up to 3 months, it is called the wintering period. Due to the effects of cornices and the weather, the wheat planting period varies greatly from place to place. Sowing was first carried out in early October and people were still planting wheat in early December. The earliest days of wheat in the field have five to six leaves, most of which are 2-3 leaves, and there are endemic ones; the basic seedlings have more than 200,000, the average is about 150,000, and the difference is only 6-7 million seedlings. In order to ensure that the wheat field has a good harvest next year, we must seize the favorable opportunity for the current average daily temperature to be above 5°C to do a good job of field management for the fields during the wintering period. Seemiao seedlings to raise seedlings for the sowing date, the basic seedlings less plots, topdressing urea 10-15 kilograms per acre. Other fields can recover the right amount of eccentric fertilizer. The two key factors that affect the high yield of wheat in the Yangtze River Valley are: waterlogging in the field and high temperature ripening in the coming year. Use the winter season to clear the "three ditch." Precipitation can be discharged directly outside the field, so that it can rain and dry fields, reduce the humidity in the field, reduce the groundwater level, and prevent the waterlogging of wheat. For low-lying areas, drainage ditches can be added to drain the accumulated water out of the fields. The use of clean ditches, the use of river sand, and miscellaneous ash fertilizer to cultivate roots of soil, warming and freezing, fertilizing and improving the soil, and promoting robust winter wheat. Spraying paclobutrazol control and stimulating seedlings to promote early sowing, adequate seedlings, and prosperous plots, spray 15% paclobutrazol per acre 40-50 grams, to prevent premature jointing in winter. For plots with slow sowing date, less basic seedlings and weaker growth, spraying 20-30 grams of paclobutrazol per acre will promote the growth of tillers. Comprehensive prevention and control of diseases and pests Wheat winter diseases and pests include: wheat bran, wheat spiders and a physiological rot disease, sheath blight and so on. Pests are treated with acetamiprid and avermectin. Physiological diseases do not require medication. As long as the soil environment is improved, a little foliar fertilizer is sprayed on the leaves. Sheath blight is treated with carbendazim or thiophanate-methyl. Timely chemical weeding according to grass, grass age, lyrics and other appropriate use of pesticides, focusing on pre-winter chemical weeding. Overnight, the average daily temperature above 5°C should be used for sunny days to ensure that the temperature below 0°C is not encountered within 7 days after the application of the drug to enhance the elimination of the effects and avoid the occurrence of phytotoxicity. For the wheat field monocotyledonous weeds can be controlled by thrips or wheat poles, dicotyledon weeds are selected to make it long or tribenuron-methyl, etc. Wheat fields with single and dicotyledonous weeds can be mixed and used. In order to save labor and costs, spraying paclobutrazol, foliar fertilizer, pest control and chemical weeding can be carried out simultaneously. Shanghai J.Shine Co.,Ltd , https://www.jshinechem.com