(a) Vegetable sowing. The main vegetables in autumn are Chinese cabbage, radish, and carrots. Should pay attention to the selection of disease-resistant, cold-resistant, high-yielding and resistant storage of late-maturing varieties, and pay attention to appropriate sowing, Chinese cabbage usually under the 3-5 days before and after the start of sowing, carrots generally sowed in mid-July, radish generally before and after the beginning of autumn Sowing is appropriate until mid-August. Disease-resistant, long-lasting late-maturing varieties can be properly sowed early, and medium-maturing varieties with short growing periods can be appropriately sown late. Before sowing, seeds can be soaked and germinated according to the conditions. When planting Chinese cabbage, care must be taken not to make continuous crops, and it is not possible to make rotations with other cruciferous vegetables. The radish and carrot roots are well developed. Before sowing, the soil needs to be deeply ploughed, and the crushed rubbish, rubbed and flattened base fertilizer should be applied. (B) seedling management. One is to do a good job of shade. After planting seedlings in autumn, when the seedlings are unearthed, the temperature is high, the light is strong, the drought is heavy, and heavy rain is more, which is not conducive to the growth of seedlings. After sowing, the shade may be appropriately shaded to lower the temperature. The second is to keep the seedbed soil moist. In order to avoid the lack of water due to high temperature, the seedbed soil should be kept moist and moisture must be added before sowing. Watering is best carried out when the temperature is low in the morning and in the evening. After emergence, it is necessary to prevent it from being too wet, but it must not be too dry to avoid falling seedlings or wilting. The third is and time seedlings. After emergence to the cotyledon flat period and time seedlings, the seedlings should generally be 2-3 times. High Pressure Extension Tubings,high pressure PVC extension tube,Extension Tubings,extension tube medical Anesthesia Medical Co., Ltd. , https://www.jssinoanesthesias.com