乙烯利对梨树的化学疏花效果目前，大部分果园都是用手工疏花疏果，许多果园因完不成这一农活而使果品质量下降，出现果个小而卖不出去的现象。为解决此问题，我们搞了化学疏花疏果试验。４月９日，在雪花梨大蕾期或盛花期，用１０００倍４０％乙烯利喷雾疏花，２１天后调... Ethephon on pear tree chemical flowering effect At present, most of the orchards are hand-thinning thinning fruit, many orchards due to fail to complete the farm work so that the decline in the quality of fruit, the fruit appears small and can not be sold out phenomenon. To solve this problem, we engaged in chemical thinning and fruit thinning test. April 9, in the bud or blooming snowflakes, 1000 times 40% ethephon spray thinning, 21 days later ...