When is the best time to plant radish and cabbage?

Radish and cabbage are four-season vegetables, which can be planted all year round. Generally speaking, they are planted around early autumn. If the weather is hot, planting can be postponed until mid-August.

The planting time of Chinese cabbage varies greatly in different regions and seasons. Under normal circumstances, it is advisable to sow 3-5 days before and after beginning of autumn, and the high temperature year can be postponed to mid-August. Late-maturing varieties with disease resistance and long growth period can be sown early, and middle-maturing varieties with short growth period can be sown a few days later. The sowing date of spring radish should be strictly controlled and can be arranged according to the production level and actual demand of vegetable farmers. For greenhouse cultivation, 65438+ can generally be sown from late October to mid-February in1and harvested in early April.

Plastic film mulching cultivation in the open field can be sown in the middle and late March to early April, and harvested in the middle and late May to early June. If the small arch shed is covered with plastic film, the sowing date can be advanced to mid-March. Autumn radish is usually sown in the middle and late July. Harvest in mid-September, if the climate is suitable, with high yield and good quality; Summer and autumn radish, sown in May-June, harvested in July-August.

Control method of radish downy mildew

In the selection of disease-resistant varieties, radish 1, Hongfeng No.2 and 1 have been used before. More resistant to disease. Sow at the right time, not too early, so that the growing period can avoid the rainy and humid onset period. Rotation of seriously ill and non-cruciferous vegetables for 2-3 years, high ridge cultivation, reasonable density, combined application of nitrogen, phosphorus and potassium fertilizer, timely drainage after rain to promote plant health. Clear the diseased seedlings in the field in time, clean the field after harvest, and reduce the initial source of infection.

At the initial stage of the disease, 300-fold solution of 40% ethyl phosphate wettable powder, 800-fold solution of 25% metalaxyl wettable powder, 400-fold solution of 64% antiviral alum wettable powder, 300-fold solution of 68% Du Rui aluminum-copper wettable powder, 800-fold solution of 72.2% Acar aqueous solution or 69% Anke manganese-zinc wettable powder 1000 can be sprayed in time.