Since the winter and the spring, rare and persistent droughts have ravaged the southwestern region of China. Here is a brief introduction of how to scientifically respond to disasters in agricultural production and minimize losses. 
   First, a fertilizer should not be too large 
   If the amount of one-time fertilization is large during drought, it will be easily washed away when it encounters heavy rain after drought. This will not only cause economic losses to farmers but also pollute the environment.
   Second, the deep application of fertilizer, water pressure fertilizer
   In the case of drought, the fertilizer is volatile if only the fertilizer is applied to the surface. If there is heavy rain after a drought, it is easy to be washed away by the rain. Therefore, the fertilizer should be applied as deep as possible, and the fertilizer should be added after the application to maintain the fertilizer efficiency. 
   Third, pay attention to with a reasonable fertilizers, especially potash, Boron 
   Many studies have shown that suitable potassium can increase root-shoot ratio and enhance crop water absorption capacity; and under drought conditions, suitable potassium can also promote the accumulation of proline and regulate cytoplasmic swell pressure to enhance crop drought resistance. In addition, drought is easy to induce boron deficiency in crops, especially peanuts, fruit trees, rapeseed, etc. that are growing. Therefore, under drought conditions, attention should be paid to the appropriate application of potassium and boron fertilizers.
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