Why is the Chinese cabbage harvested in Beijing in June 165438+ 10?

Chinese cabbage grown in Beijing is harvested in late autumn and early winter (cabbage is harvested in winter). The harvest of Chinese cabbage in Beijing is from the end of 10 to the beginning of10. At this time, irrigation should be stopped, and vegetables should be cut in time before the temperature drops to 0℃ to prevent freezing.

A folk proverb says: First frost cuts cabbage. After the first frost, all the way to the streets and alleys of beginning of winter and Beijing, cabbage once called winter storage cabbage began to be sold. Almost the whole family has gone out. People pull tablet computers, push cars, ride bicycles and even buy them home by tricycle, which has become a magnificent picture of Beijing's old winter.

Pest control of Chinese cabbage

(1) Use yellow sticky boards to trap and kill aphids, whiteflies and other pests.

⑵ Sweet and sour solution for trapping and killing: The sweet and sour solution consists of 3 parts of sugar, 3 parts of vinegar, 0/part of high-alcohol liquor/kloc-0, 0/part of water/kloc-0, and 0. 1 part of 90% crystal trichlorfon, which are evenly mixed and put into a large bowl, and placed 1 tablet every 80 square meters, covered during the day and opened at night.