【摘要】 在夏梢初发时,对幼龄的"尾张"品种柑桔树,全株喷250-500ppm 调节膦,22天后,控梢率达70-80%,37天时为40-45%,与对照株比较,夏梢长度平均短二分之一以上,全株夏梢干物质量减轻85-90%。座果率明显提高,增产效果显著,对品质影响不大。1000ppm调节媵对柑桔有药害,表现为叶片卷曲,座果率降低,果重减轻。同样方法使用2000ppm B₉和3000ppm 健壮素也有抑制柑桔夏梢生长的作用,但持续时间不长。2000ppmCCC 抑制夏梢的效果不明显。B₉健壮素、CCC 等处理对果重均无影响,其中健壮素对座果率有所提高,B₉,CCC 对座果率影响不大。更多还原

【Abstract】 Krenite(ammonium ethylcarbamoyl phosphonate)at 250 and 500 ppm was applied to the young unshiu mandarins(Citrus Unshiu Marc.)cv.owari Unshiu at the time When its summer shoots beginning sprouting.The retarding shoots reached 70-80% 22 days later and 40-45% 37 days later respectively.The length of summer shoots reduced to half and less than half,the dry weight matter of summer shoots of every tree decreased by 85-90%. The fruitset was improved,its output increased prominently striking,however,it made no big change to the fruit quality.Krenite at 1000ppm did some harm to orange tree, when the leaves curled,fruit set deereased,and the fruit weight reduced. B-9(succinic acid 2,2-dimethyl hydrazine)at 2000ppm and DPC(N,N-dimethylpi- peridium chloride)at 3000ppm had some effect on retar-ding the summer shoots only for a short period.Whereas CCC(2-chloro-ethyl trimethylammonium chloride)at 2000ppm did not have good effect on controlling the summer shoots growth.The treatment with DPC somewhat improved fruit set while the treatment with B-9 and CCC did not change greatly。更多还原