1992年,我们在梨幼树上进行B_9、乙烯利与PP_(333)混喷效果比较试验,对抑制当年新梢生长,促进碳水化合物积累,增加中短枝量,提高果实品质都取得了一定效果,现将试验结果简报如下。 一、材料与方法 试验于1992年在园艺所试验基地进行,试材为7年生砀山酥梨和59香梨,砧木为杜梨。栽植密度为5×4m,选生长势旺盛,长势相对一致的旺树,单株小区,随机区组设计,重复3次。 In 1992, we tested the effect of B_9, ethephon and PP_ (333) spraying on pear saplings, and achieved some results in restraining the growth of new shoots, promoting the accumulation of carbohydrates, increasing middle and short shoots, and improving the quality of fruits Effect, the test results are summarized below. First, the material and method test in the horticultural experimental base in 1992, the test material for the 7-year-old Dangshan pear and 59 pear, rootstock is Pear. Planting density of 5 × 4m, select the growing vigor, growth is relatively consistent Wang tree, single plant, randomized block design, repeated 3 times.