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供试品种为哈斯(Hass)和富尔特(Fuerte)。设置的处理有:(1)于春梢开始抽生时(开花量已达25％)叶面喷施PP_(333)2.5或5.0克有效成分/升;(2)在(1)的基础上,于春季营养生长旺盛期第二次喷施PP_(333)2.5克有效成分/升;(3)在(1)的基础上,于夏梢开始抽生时第二次施喷PP_(333)2.5克有效成分/升。结果表明,处理树的春梢长度下降约40％。由于干物质向果实分配的比例提高,春季座果量增加。
The varieties tested were Hass and Fuerte. The treatments were as follows: (1) PP_ (333) 2.5 or 5.0 g ai / kg was applied to the leaves at the beginning of spring shoots (flowering amount reached 25%); (2) On the basis of (333) 2.5g active ingredient / L was sprayed in the second vegetative growth period in spring; (3) On the basis of (1), PP_ (333) 2.5 grams of active ingredient / liter. The results showed that the spring shoot length of the treated tree decreased by about 40%. As the proportion of dry matter to fruit is increased, the amount of fruit in the spring is increased.