1. From the bud to the flowering stage, spray a mixture containing 0.1% boric acid, 0.2% urea and manganese sulfate, 0.02% ammonium molybdate, and 0.3% potassium dihydrogen phosphate once a week. In order to prevent pests and diseases, it can be combined with foliar fertilizer. Once every 10 to 15 days, spray once with 1% urea, 0.2% potassium dihydrogen phosphate, 1.8% diazepam diluted 1500 times, and 10% polymycin wettable powder diluted 600 Double the liquid mixture once. In case of rainy days, spray it once every five days.
2. From the bud to the flowering stage. A mixture containing 0.5 ppm of triacontanol, 0.01 ppm of brassinolide, and 0.2 ppm of Fuziol was sprayed once every 7 to 10 days.
3. In the flowering stage, spraying 1.8% of the solution of sodium nitroprusside with 6000 times of liquid or 1.2% of the solution of ammonium nitroprusside for 4500 times once a week.
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