How to manage greenhouse vegetables in continuous rainy days?

    How to manage vegetables in continuous rainy weather. These days, it has been rainy and cloudy almost every day, which is a very difficult day for the crops. In these continuous cloudy and rainy days, various vegetables planted in the soil have more or less abnormal conditions, and some diseases have occurred. So how should vegetables be managed in weather like this?

The long-term rainy weather makes the soil too wet for a long time, and the water deposition is close to saturation, which will cause the current vegetable varieties such as green leafy vegetables, melons, solanaceous fruits, and other vegetables to be stained, resulting in poor root vitality of vegetables, reduced fertilizer absorption and water absorption, and leaves. chlorosis, stunted growth and general deviation of crop growth.

     Responses

    1. Be careful when watering and fertilizing. Be very careful when watering and fertilizing in this low temperature season. If the timing of fertilization is wrong, it will easily cause damage to the root system of vegetables. In addition, when choosing fertilizers, don’t just try to be cheap, you should choose water-soluble fertilizers with sufficient content and good fertilizer efficiency, and pay attention to the scientific ratio of fertilizers.

     2. Pay attention when the weather suddenly turns sunny. The weather has always been cloudy and rainy. After the weather turns sunny, many greenhouse vegetables appear acute wilting. At this time, the method of spraying warm water can be very effective. It should be reminded that the warm water sprayed at this time is about 25 ℃, and it should not be too high. The amount of warm water required for spraying in the whole shed is not too large.

     3. Pay attention to the weather in time. Before the continuous rainy days, the plants with weak growth or more fruits should be harvested in time, and the flowers and fruits should be thinned appropriately. Timely pruning and interruption, picking off old leaves and diseased leaves.

     4. When the vegetables are exposed to continuous cloudy days for a long time, a awning should be built in the shed to prevent the strong transpiration effect of the storm after the rain, causing the plants to wilt. According to the suitable temperature for the growth of various vegetables, timely shade the awning to block the strong light, and open the windows for ventilation and cooling in time. On a sunny day, spray some water on the leaves to make the temperature rise slowly, so that the seedlings can gradually see the light, so as to avoid the phenomenon of "flash seedlings".

     5. Pay attention to the weather in time. Before the continuous rainy days, the plants with weak growth or more fruits should be harvested in time, and the flowers and fruits should be thinned appropriately. Timely pruning and interruption, picking off old leaves and diseased leaves.

   6. After continuous cloudy and rainy days, spray foliar fertilizer on the plants, and supplement nitrogen, phosphorus, potassium and other macro elements and trace elements such as boron, zinc, and magnesium in time to promote the plants to resume growth as soon as possible. Pay attention to controlling the amount of nitrogen fertilizer used to avoid physiological deficiency due to excessive nitrogen fertilizer.

     7. Greenhouse vegetables are prone to problems in even cloudy weather, especially the old leaves in the middle and lower parts are prone to yellowing, and some even have serious yellowing plant death. The yellow leaves of vegetables are mainly caused by insufficient nutrient supply, and the lack of nutrient supply is mainly caused by the weak root system and poor ability to absorb water and fertilizer. Humic acid products can be used to improve the aggregate structure of the soil, create a suitable growth environment for the root system, and also improve the ground temperature.