Integrated Management of Chinese Cabbage

Chinese cabbage cabbage stage is the period when the outer leaves of autumn cabbage grow slowly, the leaf ball grows rapidly, the largest amount of daily growth, and a large amount of nutrients accumulate. In this period, the management points are scientifically watered and fertilized to keep the soil moist and ensure the robust growth of Chinese cabbage.

In the process of growth and development, when the outer leaves have a certain amount, they will enter the late period of growth of the outer leaves and begin to envelop them. From the start of the ball to the compaction of the leaf ball is the ball period of autumn cabbage. Generally, early maturing varieties range from 25 days to 30 days, and late maturing varieties range from 40 days to 50 days. The nodule period can be further divided into the following: First, the early ball stage, from the center of the ball to the pull, this period requires 20°C-22°C during the day, 10°C-12°C at night, plenty of sunshine, sufficient light, high soil moisture, and fertilizer It is beneficial to photosynthesis and root absorption of outer leaves. Second, in the middle of the ball, the early and middle period of the ball is the fastest growing period of the heart. The weight of the ball is 80%-90% formed in these two periods. Third, late in the game, Chinese cabbage continued to grow, and the weight of leaf ball was still increasing. Obtaining a compact, white and tender leaf ball is an important economic trait in the production of autumn cabbage. Therefore, special attention should be paid to improving the management level of fertilizer and water during the ball-bearing period so as to ensure the normal growth of the leaf ball and prevent the phenomenon of loose ball, fissure ball, deformed ball and even non-balling.

Fertilization should be mastered at the beginning of the ball to apply a heavy fertilizer at the beginning of the ball, called "suction tube fertilizer." Mu ammonium sulfate or urea 10 kg -15 kg, or in conjunction with irrigation of thin manure about 1500 kilograms of water can also be chased cake 50 kg -100 kg, but the cake must be fermented maturity. At the same time, 7.5 kg to 10 kg of superphosphate and potassium sulfate should also be applied to promote leaf ball growth. To the middle of the ball, combined with irrigation to apply a heart filling fertilizer, topdressing 10 kg-15 kg of chemical fertilizer per mu or 1000 kg to 1500 kg of human waste, to promote the tight core ball, fertilization method can be used trench or digging Pit deep.

Reasonable watering Chinese Cabbage grows vigorously and requires adequate supply of fertilizer and water. Usually it takes two to three irrigations. In case of dry weather, the number of irrigation should also increase. Pay attention to the first time the water should be light irrigation, to prevent sudden flooding water to help cracking cabbage; two times to follow the water, to prevent the surface crack caused by root. Irrigation should adopt furrow irrigation method to make the water slowly infiltrate. This can not only ensure the water needed for the growth of cabbage, but also avoid excessive water and promote the occurrence of soft rot. Irrigation should be done so that no water accumulates in the ditch, no water is present on the ridge (raft), and there is no water shortage in the root system. The irrigation was stopped 5 days to 10 days before harvest to ensure the storage of Chinese cabbage.

Packing vegetables can protect autumn cabbage leaves from frost damage, increase production, reduce losses, and facilitate storage. The bundles of vegetables are generally carried out 15 days before harvest. The rosette leaves are lifted to hold the leaf balls and bundled with sweet potato vines, millet stalks and other crop stalks. Photosynthesis of the leaves of the bundles is affected later, and the cabbages affect the yield prematurely and are susceptible to freezing damage.

When the Chinese cabbage leaves are harvested in time, the average temperature drops to 5°C on that day, and they are harvested when they are harvested. Generally, they are harvested in the first few days of the solar season.

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