Keep warm and forget to ventilate. The outside temperature is low, and sometimes the lighting conditions are not good. To ensure the temperature of the shed, many vegetable farmers are not willing to ventilate. When the grasshoppers are uncovered, at noon, in order to supplement the carbon dioxide in the shed, promote the photosynthesis, and discharge the harmful gases accumulated in the shed, and ventilate and ventilate under the premise of ensuring no cooling. The length of ventilation time can be determined by the temperature inside the shed.
Control water but not water. When the temperature is lowered, the vegetable farmers are afraid of rooting after watering or the humidity in the shed after watering causes the disease to occur, and they dare not rush to water. The vegetables in the fruiting period have more demand for fertilizer and water. It is suggested that the vegetable farmers should choose the sunny weather to make up the water in accordance with the soil moisture conditions, and choose the way of dark irrigation or pouring small water under the membrane.
Timely fertilizer, but not excessive. In the low temperature period, the activity of the root system is deteriorated, and the problem of roots and yellow leaves is easily caused by the application of chemical fertilizer. At present, the manure should be based on organic fertilizer or biological bacterial fertilizer. However, the fertilizer should not be excessive, and the principle of “less food and more meals†should be followed. Generally, the organic fertilizer or biological fertilizer is 15-20Kg/mu.
Leaf noodles can not be forgotten. In the low temperature period, root activity is weak, and foliar fertilization is a good way to supplement plant nutrition and prevent deficiency. Currently commonly used foliar fertilizers are fully nutritious, such as the green Fenwei series foliar fertilizer, Fang Run foliar fertilizer, and multiple forces. When the plant is deficient, the corresponding foliar fertilizer can be sprayed to relieve.
Spray plant growth regulators. Spray growth regulators such as alizarin lactone, love more, help melanin, etc., can adjust the growth of crops, enhance the disease resistance and resilience of plants. Plants with weak growth can be sprayed with 1500 times solution of alizarin or 6000 times solution. Plants with more vigorous growth can be sprayed with 25% auxin 750-1500 times.
(hate piano)
Special Shaped Lampshade,Pe White Wall Lampshade,Outdoor Wall Light Shade,Outdoor Waterproof Garden Lampshade
Changzhou Jingui Lighting Technology Co., Ltd , https://www.jinguilighting.com