Teach you how to cope with recent weather changes
The strong winds and temperature-reducing weather that appeared some time ago have caused adverse effects on vegetable production in greenhouses, resulting in increased humidity in the shed, increased diseases, plant lengthiness, poor flowering and fruit setting, and even wilting and dead trees. Remind vegetable farmers that they must take preventive measures in advance to cope with the effects of cloudy and rainy weather on greenhouse vegetables.
First of all, do a good job of insulation measures. Should be covered earlier, increase the temperature in the greenhouse, in order to ensure the temperature and environment needed for crop growth, to avoid the temperature drop, causing cold damage, affecting the normal growth of vegetables.
Second, prevent disease infections. With the use of insulation measures, the humidity in the greenhouse will increase, and more and more diseases will occur. Therefore, to remind farmers friends must take different methods for different weather to prevent the occurrence of the disease, infestation. In the case of cloudy days, it is not advisable to use spraying methods to prevent and treat diseases. Aerosols or dust can be used to prevent diseases. However, when using aerosols, we must pay attention to the timely opening of ventilation the next day to prevent the occurrence of phytotoxicity.
In addition, even after the cloudy day turns sunny, it is good for wilting and dead trees. Even after the cloudy day turns fine, we must pay attention to proper shade to prevent the transpiration of the plants from causing the water shortage and wilting of the plants too quickly. After the crops are adapted, they will enter normal management. Once the vegetables appear wilting, the crop should be sprayed with clear water or foliar fertilizer in time, potassium dihydrogen phosphate, chitin, etc. can be sprayed to supplement the nutrients and moisture needed for vegetable growth. If a long cloudy day results in poor root growth or rot, 963 chitin or Shanghai Fangdian can be used to irrigate the roots, promoting the growth of the root system, and depending on the degree of wilting of the vegetables, irrigating 1-2 times.
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