Overwintering vegetables management needs to pay attention to five points

First, do a good job of heat preservation and cold protection, and pay attention to the weather changes at any time to prevent damage to crops caused by strong cold current and even cloudy weather. If necessary, take temporary heating measures such as Yuba, heating combustion block or electric blast furnace.

Second, it is necessary to pruning and smashing the vines in time, assisting in pollination, and removing excess flower buds and fruits.

Third, we must scientifically water and topdress. Topdressing should be carried out with drip irrigation with a comprehensive nutrition and a reasonable ratio of "Christmas tree" and other instant fertilizers. It is also possible to apply NPK or humic acid organic liquid fertilizer with water. The water storage tank, water storage tank or barrel can be set in the greenhouse. After the water temperature rises by about 18 °C, water is poured again, and the small water is poured frequently to prevent the root temperature from dripping and affecting root growth and absorbing water and nutrients.

Fourth, it should be harvested in time and harvested during the best commodity period. Fifth, we must do a good job in pest control. Lichun Festival is also a low temperature and low temperature weather. The low temperature and high humidity growth environment in the shed is easy to infect gray mold, sclerotium, downy mildew, late blight, stagnation and root knot nematodes. It should first adjust the suitable growth environment conditions and increase the temperature. It is especially important to fill light. On cloudy days, it is also necessary to release air and drain at noon, and a layer of dry sawdust or dry straw is sprayed between rows to absorb excessive air humidity in the shed. Low toxicity and low residue are used in the early stage of the disease. The timely treatment of pharmacy; the application of dusting agent and fumigation method should be used to prevent pests and diseases, and the conventional spraying method should not be used to reduce the humidity in the shed. It is necessary to strictly abide by the safety harvest interval after application to ensure product safety.

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