提高布目早生桃座果率技术研究

Techniques of Increasing Fruit Setting Rate on Bumuzaosheng Peach

为提高布目早生桃树座果率，在新梢旺长期对其进行叶面喷施不同浓度多效唑（PP333），在开花期进行叶面喷施硼砂以及人工授粉等处理。结果表明，人工点授桔早生、西农早蜜和早香玉桃的花粉，以及花期喷硼砂均能显著或极显著提高布目早生桃树的座果率；叶面喷施3000～4000mg／L的PP333不但能极显著提高其座果率，而且能有效抑制新梢旺长，且浓度愈高。早期的抑制效果愈好。

The experiments of foliar spraying of different PP_(333)concentrations at shoot rapid growth period,foliar spraying 0.5% borax and artificial pollinating at flowering period were conducted in order to increase fruit setting rate of Bumuzaosheng peach.The results showed that artificial pollinating pollens of Juzaosheng,Xinongzaomi、Zaoxiangyu and foliar borax spraying at florescence can increase the rate of peach setting significantly or extremely significantly.Foliar spraying 3 000～4 000 mg/L PP_(333)not only can in- crease the rate of fruit setting extremely significantly,but also can control shoot exces- sive growth effectively.The higher the concentrations were,the better the effects were.