The products of early autumn cabbage are listed before and after the National Day, and can obtain better economic benefits. However, its seedling period happens to be in the late summer and early autumn. Higher temperatures often affect and inhibit the growth of Chinese cabbage seedlings, and often lead to serious viral diseases leading to reduced production or even no harvest. The techniques for seedling production in early autumn cabbage are summarized as follows:
Choose the right variety. Since the whole growth period of Chinese cabbage cultivation is under high temperature and strong light conditions, it is necessary to use early-maturing Chinese cabbage varieties that are resistant to heat and glare and have strong resistance to viral diseases, downy mildew and soft rot. Xia Kang 50, Xia Kang 55, Spring and Autumn 54 , heat anti-white 45 and so on.
Determine the appropriate sowing date. Due to the different emergence time of new species and seedlings, the new seeds should be planted at around 5 pm, and the seeds should be planted at 8-9 in the morning.
Choose a nursery plot. In order to prevent autumn rain, the seedbed should be located in a well-drained plot.
Carry out rooting and nursery. It is advisable to use nutrient mash for rooting and nursery to facilitate centralized management and cultivation of strong seedlings.
Strengthen water management. The implementation of the watering system of “three waters and seedlings, five waters and fixed trees†can prevent drought and cool down agricultural knowledge and reduce the occurrence of viral diseases.
Timely shade and cool down. During the nursery period, according to the weather, it is necessary to spray water and cool several times in the seedbed, use sunshade net shading, shelter from rain and wash.
Integrated pest management. The main pests and diseases of Chinese cabbage seedlings include jumping armor, cabbage caterpillar, rapeseed meal, aphid, soft rot, black rot, angular spot disease, etc. The application of related pesticides is carried out by soil disinfection, seed dressing and spraying to prevent and kill.
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