The over-summer and autumn management of high-yield cultivation of open-ground chili mulch is the key to whether the growers can produce a bumper harvest.
The key technologies of the summer are:
Flood prevention. After the rainy season, pay attention to drainage and prevent water accumulation in the field for a long time.
Picking old leaves and diseased leaves. One is to maintain good ventilation conditions in the field, and the second is to reduce the source of disease and prevent diseases.
Timely topdressing and watering. Preventing de-fertilization, drought and summer topdressing should be based on nitrogen fertilizer, enhance the growth potential of pepper and slow down leaf senescence. When a drought occurs, water should be sprayed in time to prevent drought. Watering in summer should be arranged in the cool morning and evening, and it is strictly forbidden to water before and after noon. In addition, during this period, thunderstorms occur around noon on sunny days, and the roots of peppers should be protected in time after the rain.
Cultivate and destroy land. In the summer, the bottom of the furrow should be squatted regularly to promote root growth and remove weeds in time.
Prevent disease and insects. In summer, high temperature and high humidity, plant growth is weak, disease resistance is weakened, and pests and diseases are prone to occur.
Spray photorespiration inhibitors. In summer, the light is strong, the temperature is high, and the plant consumes more nutrients. The photorespiration inhibitor should be sprayed regularly to reduce nutrient consumption. The specific method is: spray the leaves with sodium bisulfite at a concentration of 180-200 mg/L in the morning, once every 5-7 days, and spray 3-4 times.
Autumn management points of high-yield cultivation of open field capsicum mulch film:
Early topdressing. After watering into the autumn, it should be followed by topdressing and watering, and promote new leaves, so that the plants enter the second peak of the results as soon as possible. In this period, the temperature in the open field is still relatively high. It should be watered in the morning and evening, not watering around the hot noon.
Hormone preservation and fruit preservation. After entering the autumn, the temperature is still high, especially when there is more rain. The fruit setting rate of the plants is often not high. It is necessary to spray a flower-preserving fruit conditioner.
The number of fruits to be retained should be appropriate. The temperature in autumn is gradually reduced, and the time from flowering to harvesting of pepper is also lengthened. It usually takes about 30 days. Therefore, the plant should not be placed in fruit for about 30 days before the drawing, and the nutrient supply is concentrated.
Reasonable fertilizer management. In the early stage, we should strengthen the management of fertilizer and water, promote fruit and strong growth, and prevent premature aging. In the later stage, it is necessary to reduce the topdressing and appropriately lengthen the interval between watering and watering, and the amount of watering each time should be small to prevent the ground temperature from falling too fast. Generally, the topdressing and watering are stopped about half a month before the plucking.
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