After sowing or transplanting rapeseed, rapeseed damage caused by rapeseed due to weather and soil. Stagnant damage seedlings are mainly due to poor drainage or too much soil moisture in the field during land preparation, which makes the paddles muddy and form dark stains. The damage caused by the waterlogging caused the root system to be stunted or even rotten. The outer leaves of rapeseed turned red, the growth of the inner leaves was stagnant, the leaves were gray, and the heart leaves could not spread. Waterlogged stiff seedlings mostly occur in rice fields. Preventive measures: 1. Open the Sangou well in advance, lower the groundwater level, and eliminate dark stains in the field; 2. Select a sunny day to prepare the land, and plant large seedlings on a sunny day, and avoid rainy days; Fertilizer, and do a good job in cultivating loose soil, in case of rain, clear the ditch in time to prevent water damage to the roots.
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