植物生长调节剂在苹果优质高产技术中的应用

Application of PGRs to the high-quality and high-yield apple production technology

1996～ 1 998年在苹果园内进行了几种植物生长调节剂在苹果优质高产配套技术中的应用试验 .结果表明 ,不同时期施用不同种类的生长调节剂 ,对苹果具有综合有益效应 ,能提高坐果率、果形指数、抑制新梢旺长、促进花芽分化 .而仅在某一时期单独施用一种生长调节剂 ,则往往不能奏效或其效果不显著 .如在新梢旺长期单独施用 1 0 0 0× 1 0 - 6B9,花量没有增加 ,PP333对红富士新梢生长的抑制作用和促花作用优于乙烯利 .另外 ,GA对减轻果锈具有一定作用 .

In 1996～1998,the experiment about the application of several kinds of PGRs to the high quality and high yield apple production technology have done,the results showed:different kinds of PGRs are used at different period,there is synthetical beneficial effect on apple,PGRs can improve bearing rate,increase fruit shape index,inhibit the luxuriant growing of new tips of branches and promote flower differentiation.But if one kind of PGRs is used at one period,it will often show no apparent effect or no effect.For example,during the time of the luxuriant growing of new tips of branches only uses 1 000×10 -6 B 9,flower amount doesn't rise.PP 333 is better than CEPA at the aspect of inhibiting growth of new tips of branches and promoting flower.