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通过5年不同化学药剂和浓度、不同喷药时期的试验表明,1.0度石硫合剂可以疏除当天开的花。在树体花量过大时,每隔两天喷一次1.0度石硫合剂,能疏除树体中、后期花,有利于节约树体养分和均衡结果。但在易发生苹果花期霜冻的地区,采用疏果比疏花更稳妥。在国光苹果盛花后10天左右,树体喷布敌百虫500倍(加入0.2～0.3%6501型展着剂),能使过多的幼果提前脱落,有利花芽分化,并能提高当年单果重、果实等级和两年平均产量。对化疏不足的树体应辅以人工补充疏果调节。
Through 5 years of different chemicals and concentrations, different spraying period of the test showed that 1.0 degree lime sulfur agent can be sparse day flowers. When the amount of tree body is too large, once every two days spraying a 1.0 degree lime sulfur agent can sparse trees, late flowers, help to save tree nutrients and balance the results. However, in areas prone to blossoming apple blossoms, the use of thinning is more secure than thinning. In the state apple blossoms after about 10 days, the tree spray trichlorfon 500 times (adding 0.2 to 0.3% 6501-type spreading agent), can make too many young fruit off in advance, conducive to flower bud differentiation, and can improve the single fruit Heavy, fruit grade and two-year average yield. On the lack of sparse tree should be supplemented by artificial supplementary thinning regulation.