How to spray paclobutrazol on radish

The main results are as follows: 1. Spraying period: 15-20 days after radish sowing, it is suitable to spray 3-5 leaves of radish. 2. Liquid concentration: the spray concentration is 15% paclobutrazol per mu and 50 kg of water. 3. Spraying method: use knapsack compression sprayer, spray radish leaves evenly, and spray after rain. 4. The times of medication: the general fields only need to be treated once, and the fields with high level of fertilization and over-growth of plants should be sprayed for the second time 7-10 days after the first application. Matters needing attention: ① should be sprayed before 4 p.m. on rainless and sunny days; ② should be used accurately, with sufficient water, and evenly, without leakage or re-spraying; ③ should not apply paclobutrazol when sowing radish fields that are too late or poor growth; ④ can be alleviated by spraying gibberellin (920) because of improper application. In the field where ⑤ was sprayed with paclobutrazol, after the fleshy root of radish was exposed, the mixture of 0.2% potassium dihydrogen phosphate and 0.02% borax was sprayed twice every 7-10 days, which was more effective in preventing and controlling the heart of radish bran, improving quality and increasing yield.