植物生长调节剂对库尔勒香梨坐果和果实形态的影响

为库尔勒香梨主干形栽培的高产增收，选择PBO、赤霉素、PP333三种植物生长调节剂设置不同浓度对库尔勒香梨进行盛花期处理。结果表明：（1）盛花期喷施PBO300倍液、100mg/L赤霉素和80mg/L赤霉素+0.1%硼均能提高库尔勒香梨坐果率且80mg/L赤霉素+0.1%硼的喷施效果最好，喷施10mg/L赤霉素+0.1%硼和PP333200mg/L则降低了坐果率。（2）PBO300倍液、10mg/L赤霉素+0.1%硼和PP333200mg/L有利于脱萼果率的提高。（3）PBO300倍液、10mg/L赤霉素+0.1%硼和PP333200mg/L对提高库尔勒香梨单果重作用显著。（4）喷施PP333200mg/L可以有效改变梨果果形指数。（5）喷施PP333200mg/L对抑制库尔勒香梨果柄的生长有显著作用。

Effects of Plant growth regulators on Fruit setting and Fruit Morphology of Korla fragrant Pear

in order to increase high yield of Korla fragrant pear in trunk cultivation, three plant growth regulators, PBO, gibberellin and PP333, were selected to deal with the full flowering stage of Korla fragrant pear with different concentrations. The results were as follows: (1) spraying PBO300 doubling solution, 100mg/L gibberellin and 80mg/L gibberellin 0.1% boron at full flowering stage could increase the fruit setting rate of Korla fragrant pear, and the spraying effect of 80mg/L gibberellin 0.1% boron was the best. Spraying 0.1% boron of 10mg/L gibberellin and PP333200mg/L decreased fruit setting rate. (2) PBO300 ploidy, 1. 0mg/L gibberellin 0.1% boron and PP333200mg/L were beneficial to the increase of fruit rate. (3) PBO300 ploidy. 10mg/L gibberellin 0.1% boron and PP333200mg/L significantly increased the single fruit weight of Korla pear. (4) spraying PP333200mg/L could effectively change the fruit shape index of pear. (5) spraying PP333200mg/L could inhibit the fruit stalk of Korla pear. The growth of the plant has a significant effect on the growth.