Chili is a common vegetable in our daily life. It tastes spicy and refreshing and is very popular among people. In the process of pepper planting, some symptoms will inevitably occur. Among them, the fruit drop is a serious effect on the pepper. This article will introduce the countermeasures for the fall and fall of the pepper in the spring for your reference.
1. Due to the large temperature change in spring, it is in an unstable state. The peppers in the flowering and fruiting period are easily affected by environmental conditions, resulting in falling flowers and fruits. There are many reasons for the falling and falling of the fruit of the pepper. There are both physiological and pathological aspects. Pepper is an environment that is dry and dry, such as high temperature (more than 35 degrees), which affects pollination, fertilization, or a long rainy day, so that the light is insufficient and the temperature drops (less than 15 degrees). Affects the elongation of pollination and pollen tubes, resulting in falling flowers.
2, soil drought, lack of water, air evaporation, will also inhibit the demand for fertilizer and water, causing falling flowers and fruit. Excessive water, poor permeability, hinder root respiration and growth, and even roots, can also cause falling flowers and fruit.
3, the application of fertilizers should be comprehensive nutrient, NPK combined with application, excessive or insufficient nitrogen fertilizer or lack of phosphorus and potassium, so that the application of fertilizer is unbalanced, the supply of various nutrients is not coordinated, it will make the fruit and fruit due to lack of nutrients or nutritional disorders Causes falling flowers and fruit.
4, planting too dense, resulting in poor ventilation, insufficient light, photosynthesis weakened, male flower development, so that the second layer of flowers easily fall off. The control measures are as follows:
The first is to implement a rotation. The disease-resistant varieties are selected, and the healthy seedlings without pests and diseases are planted, the roots and leaves are not planted, the plants are properly planted, the ventilation conditions are improved, and the plants have a good growth environment.
The second is to strengthen the management of temperature and humidity. In the flowering result stage, the ventilation should be increased. The shed temperature should be kept at 20-27 degrees during the daytime. When the night temperature is not lower than 15 degrees, it can be ventilated day and night. Only when the ventilation is good, the plants can grow vigorously and the fruit setting rate is high.
The third is to strictly control the fertilizer and water, and rational fertilization. Before the fruit is placed, it can not be watered and topdressed, thus controlling vegetative growth and promoting reproductive growth. Phosphorus and potassium fertilizer should be added when topdressing, reducing the amount of nitrogen fertilizer, entering the flowering period and fruit setting period, and the fruit rapidly expanding, it requires a lot of nitrogen and phosphorus. Potassium fertilizer.
The fourth is to control soil moisture. Peppers generally require an air humidity of 55-65% and a soil moisture of about 15%. If it is higher than 18%, it will affect root development and plant growth, but the soil should be kept moist during the fruiting period.
The fifth is to prevent and treat diseases. The main diseases of peppers include viral diseases, anthracnose diseases, cotton rot diseases, etc. Viral diseases can also cause plants to shrink and not grow in branches, which seriously affects yield. The virus disease caused by aphids should be thoroughly and earlyly prevented, and it can be eliminated in the spotting stage. It can be controlled by acetamiprid, dimethoate and dichlorvos; the mites can be controlled by moth moth or stone sulphur. Viral diseases can be sprayed with virus A, phytopathology, and the like. Other diseases can be controlled by Plex, nail cream pot, Suikeling, chlorhexidine, carbendazim, carbendazim, methyl thiophanate and other agents. In addition to the above measures, hormone treatment, such as 2,4-D or anti-fallin, can be used to prevent falling flowers.
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