The early-autumn Chinese cabbage market has a good economic benefit before and after the National Day. However, the nursery period is exactly from the middle of July to the middle of August. Higher temperatures often affect and inhibit the growth of Chinese cabbage seedlings, and they often lead to serious virus disease, which leads to a reduction in yield, and even to no harvest. Combining many years of practice, the key summary of the early autumn Chinese cabbage production and nursery technology is summarized as follows:
Use suitable varieties. Since the entire growing period of Chinese cabbage cultivation in autumn is under high temperature and strong light conditions, early-maturing Chinese cabbage varieties that are resistant to heat, light, and strong resistance to viral diseases, downy mildew, and soft rot should be selected. Xia Kang 50, Xia Kang 55, Spring and Autumn 54, heat resistance and other white 45.
Determine the appropriate sowing date. Due to the different timings of emergence of new and old species, new seeds should generally be planted at about 5 pm and Chen seeds should be planted at 8 to 9 in the morning.
Choose a nursery plot. To prevent autumn rain, seedbeds should be placed on well-drained plots.
Root mulching. Root saplings should be nursed with nutrients so that they can be managed in a centralized manner and cultivate strong seedlings.
Strengthen water management. The implementation of the watering system of “three waters, seedlings, and five waters†will prevent droughts and reduce the occurrence of viral diseases.
Timely shade and cool down. During the nursery period, the weather should be used to achieve multiple spray water cooling in the seedbed, the use of shade nets shade, cover rain and other erosion.
Integrated pest management. The cabbage pests and diseases at seedling stage mainly include fleas, cabbage caterpillars, rapeseed mealworms, aphids, soft rot, black rot, and keratoderma. The related pesticides are used for soil disinfection, seed dressing, and spraying to prevent and kill.
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