Before the soil is frozen, it is necessary to cultivate the seedlings of the rape seedlings to promote the development of the root system of the rapeseed and the roots from frost damage. When you cultivate soil, you should pay attention to the following issues.
1. When taking soil, do not take the soil too close to the rape seedlings, so as not to hurt the seedling root system.
2. In earth-cultivation, the soil shall be raked to the base of the seedlings, and the height of the rammed earth shall be 3 to 5 cm, so that the central leaves cover the top heart, which can enhance the cold-proof ability of the rape, but the soil should not bury the seedlings of the rapeseed. Growing point.
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