Seedbed Management in Case Of Disastrous Weather?

Seedbed （Grow rack/Rolling bench）management in case of disastrous weather?

In the process of early spring seedling raising, it is easy to encounter the disastrous atmosphere of seed cultivation. Therefore, according to the situation, non-directional remedial measures are taken to prevent the seedlings from being injured.

(1) Low temperature and even cloudy weather: when the seedlings encounter continuous low temperature and cold atmosphere before they are unearthed. Add mulch as much as possible at night. If it is a hotbed seedling, attention should be paid to increasing the ground temperature. Under normal circumstances, Baida should uncover the cover and increase the light of the seedbed as much as possible. After the seedlings are unearthed, the seedbed should not be uncovered for a long time, but the cover should be uncovered at noon when the temperature is high to transmit light and reduce humidity to prevent the seedlings from growing too long. At the same time, keep the film clean. Bounce off the dewdrops on the film at any time to maintain good transmittance. The selection of non-drip film seedling, conditional can consider artificial supplementation of light.

(2) Rain and snow weather: the scaffold shall be reinforced before rain or snow, and the snow on the covering of the seedling raising shed shall be cleaned in time after snow to prevent the scaffold from collapsing due to heavy rain and snow. When the humidity in the seedbed is too high and cannot be ventilated, a layer of dry fine soil or plant ash can be removed from the bed.

(3) Foggy weather: in foggy days, the air humidity is high, the light is poor, and the leaves of melon seedlings are easy to accumulate water. Causes the occurrence of diseases such as crushing and anthracnose. Therefore, opaque covering should be used to seal the seedbed, and the seedbed should be opened in time after the fog is dispersed, so that the seedbed can receive light and timely ventilation to reduce humidity, and at the same time spraying chemicals to prevent anthracnose and quenching.

(4) Long-term overcast and sudden sunny weather: continuous overcast and rainy weather will lead to the weakening of the seedling's ability to resist stress. If the weather suddenly clears up, the temperature in the bed will rise sharply, causing the seedlings to lose water and wilt quickly, and severely dry and die. Therefore, when the long-term overcast mules are clear, attention should be paid to gradually seeing light on the brain bed, so that the temperature in the bed will slowly rise, and the seedlings will gradually adapt, cut can't uncover the cover immediately after a sunny day. Once the seedlings wilt, they should be covered with grass curtains immediately, and then gradually uncovered after the seedlings return to normal. If necessary, warm water of about 20 degrees can be sprayed once to supplement water for the seedlings.

(5)Strong wind and cold weather: when encountering strong wind weather. Do not ventilate in case the wind "sweeps" the bad melon seedlings or blows away the film. At this time, the film should be tightly pressed around. In case of cold current, if there is sun during the day, the grass curtain should be opened to let the seedbed see light to increase the temperature of the seedbed, but the film should be tightly pressed. If it is cloudy, when the temperature in the bed drops obviously after the grass curtain is opened, the grass emperor can no longer be opened. However, the grass curtain should be opened for a short time around noon and the covering should be thickened at night.