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1.赤霉素(GA) 对枣花十分安全,有效浓度幅度很大,0.1％～0.2％的高浓度也无药害,仍能刺激枣花座果。生产上以10～15ppm比较经济,效果也好。与0.3％～0.5％尿素混喷,效果更好。一般认为在每
GA GA is very safe to date flower, the effective concentration range is very big, 0.1% ~ 0.2% of the high concentration also has no phytotoxicity, still can stimulate jujube fruit. Production to 10 ~ 15ppm more economical, the effect is good. And 0.3% ~ 0.5% urea spray, the effect is better. Generally considered in each