近几年来随着乔砧密植栽培的研究及推广,主干环剥技术被当作一项成花、保果、控冠的措施被普遍应用。但有的报告指出幼树进行主干环剥有果小,树势弱,产量低的现象。环剥对果树的生理效应也曾有过很多研究及报告。归纳起来是:环剥阻碍光合产物的向下运输及氮素向上运输;环剥后叶片的蒸腾作用及光合作用减弱,呼吸作用加强, In recent years, with the research and popularization of Qiao ani close planting cultivation, the trunk girdling technology is used as a measure of flower, fruit preservation and crown control. However, some reports pointed out that young saplings have small trunk girdling, weak shrubs and low yields. There have also been many studies and reports on the physiological effects of girdling on fruit trees. To sum up: girdling hinders the downward transport of photosynthetic products and nitrogen up transport; girdle leaf transpiration and photosynthesis weakened, enhanced breathing,