1.上海米翔问: 如何防止花卉落花落果? 答:喷洒赤霉素、比久、萘乙酸等,都具有防止落花落果作用。如叶子花用50μg/g萘乙酸溶液喷酒,即可防止落花。又如盆栽金桔、四季桔,在挂果的新梢转木质化前,用15～20μg/g浓度的赤霉素溶液喷施,即可抑制 1. Shanghai rice Xiang Q: How to prevent the flowering of flowers and flowers? A: The gibberellin spray, longer than, naphthalene acetic acid, etc., have the effect of preventing falling flowers. Such as leaf flowers sprayed with 50μg / g naphthalene acetic acid solution, you can prevent falling flowers. Another example is the potted kumquat, seasons orange, in the fruiting of the shoots turn lignified, with 15 ~ 20μg / g concentration of gibberelline solution spray, you can inhibit