Wheat flourishing

Symptoms Northern winter wheat in the autumn and winter of 1998 appeared prosperous. According to preliminary statistics, there have been 400 million mu of land in the country, among which the prosperous land in Shandong, Hebei and other places account for about 50%. In winter, low temperatures cause freezing damage, and some produce ear differentiation. A decline in cold resistance can also cause dead seedlings, causing the next year's wheat to grow strong, returning to late spring, and the number of panicles is not enough, resulting in a severe reduction in production.

Etiology Since the planting in September 1998, the temperature has continued to rise, and the cumulative temperature from sowing to November is 100-120 degrees higher than usual, plus a part of the wheat planting density. Sowing of barley fields tends to prosper early in October. The general rainfall in the winter wheat region intensified the prosperous development.

Prevention methods (1) Spring wheat can be replanted in areas with high frequency of wheat prosperous growth. As long as the varieties are selected correctly, the yield is no lower than that of winter wheat. (2) According to the weather forecast, determine the appropriate medium-term, it is not appropriate to sow early, and the sowing amount must be strictly controlled. (3) Strengthen winter management. Rolling stone suppression, deep cultivator, etc. During the repression, it is required not to injure the wheat seedlings, grasp the timing of the deep cultivating, and timely watering and top dressing. (4) Using chemical control technology, Zhuangfengan, a high-tech chemical product developed and researched by China National Agriculture University, is effective in preventing reversal and control, and local governments can promote local conditions. The specific method refers to the lodging of wheat.

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