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In the Yangtze-Huaihe region, wheat generally returns to green in February. Overheating and low temperatures in rice and wheat fields are not conducive to the growth of wheat, and the fertilizer effect is difficult to exert. Therefore, we must pay close attention to clean up and deep dig "three ditch", and promptly relax soil. The jointing period began in March, and according to the seedling stage, the application of appropriate quantitative fertilizer. Generally, 5 to 15 kg of urea is applied to the mu, and the thin and weak seedlings are often applied early;