Prevent vegetables from helping

1. Cabbage in the field a few days before harvest, sprayed with 100 mg of 2,4-D sodium salt solution per kilogram of yield in the field, or spraying 100 mg of 2,4-D, can extend the cold storage period of 3 months without defoliation . 2. The edible portion of cauliflower (cauliflower), although not a leaf, leaves the cauliflower fresh with leaves around the flower ball. From 3 days to 5 days before harvesting, spraying 100 mg of 2,4-D sodium salt per kilogram onto the leaves of cauliflower (not on the flower bulbs) can significantly delay the defoliation time of cauliflower during storage. Even harvesting one day after spraying has the same effect. 3. From 3 days to 7 days before Chinese cabbage was harvested, spray 50 mg of 2,4-D solution per kilogram of yield, or spray with 220 mg of naphthalene acetic acid solution until all the outer leaves were soaked. It can also be processed after harvest, but the drug concentration should be appropriately higher. Both of these methods can prevent Chinese cabbage from taking off during storage.