rainstorm

After sowing, it was hit by heavy rain, and the seeds were washed away to the bottom of the ditch or exposed to the soil surface, resulting in lack of seedlings. After the emergence of the seedlings, the topsoil was washed with heavy rain, and the roots were exposed. After the sun was cleared, the vegetables were wilted and died. The vegetable seedlings were damaged by heavy rain machinery, the growth potential decreased, the yield decreased, and the market volume decreased. Therefore, in order to prevent heavy rain in greenhouses, it is necessary to pay attention to the following three points:

1. Deeply cultivating soil and applying organic fertilizer can improve soil physical properties, improve soil water seepage capacity, and have an effect on reducing rain and wetness;

2. To build water conservancy, to clear the rivers around the greenhouse, to reinforce the river dams, to renovate the easy lands, to implement deep gully and sorghum farming, to plant trees for afforestation, and to make the ditch and gully communicate with each other;

3. When rainy weather, it is necessary to ditch drainage or mechanical drainage in time. The flooded plants should wash away the sludge on the stems and leaves in time, remove the yellow rotten leaves, and straighten the plants. After the soil is slightly dry, the soil will be ploughed and topdressed in time.

Hot thunderstorm

In the summer, due to strong solar radiation, the ground is rapidly warming up, causing a large amount of hot and humid air to rise violently, often producing strong thunderstorms, which is called hot thunderstorm. It happens mostly in the afternoon, and the more sultry and windless the weather, the easier it is to happen. Hot thunderstorms often bring greater harm, and have a greater impact on cucumber, eggplant, and leafy vegetables.