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Therefore, in the winter and spring even cloudy days, we should pay attention to avoid using such fertilizers as raw chicken manure and compound fertilizer, and apply bio-organic fertilizer to strengthen the maintenance of roots. In addition, when the topdressing of vegetables needs to be topdressed in the middle and late stages of growth, it is possible to choose a sunny morning and a small wind after topdressing.
In the event of gas damage, it is necessary to take remedial measures in a timely manner: First, we must loosen the soil in time, strengthen the ventilation, so that the harmful gas will be released as soon as possible, and even the wind should be properly ventilated on cloudy days. When the time is big. The second is to spray plant growth regulators such as cytokinin and Ai Duo, to promote the recovery of the affected crops as soon as possible. Third, try to avoid applying unfertilized chicken manure or high-nitrogen fertilizer before long-term closure.
In winter and spring, the greenhouses are closed for a long time. In order to promote the growth of vegetables and the expansion of fruits, some vegetable farmers will apply a certain amount of fertilizers, such as raw chicken manure and compound fertilizer, to the fertilizers. If you do not pay attention to ventilation after fertilization, the shed will easily accumulate harmful gases, which will cause gas damage in vegetables.
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