柑桔生产者在实践中往往会遇到这种情况,即柑桔栽种后四、五年已达结果的适龄旺树,甚至十多年的成年壮树尚未结果,或开花结果很少以及隔年结果的现象。柑桔开花结果的能力除受品种、株系之间遗传特性,砧木品种以及气候因子影响外,植株的碳水化合物和无机营养都有影响。前人的许多试验研究指出:因环割、结扎、去叶、降低根的温度、干旱、断根,化学药剂处理、病害等使营养生长停止或受阻均能诱导花的发生。近年来各地有应用环割或扎铁线的办法促使各种果树如梨、 Citrus producers often encounter this situation in practice, that is, four or five years after the citrus has reached a result of the age-appropriate tree, or even more than a decade of strong adult tree has not yet reached fruiting or infrequent and the next few years The result of the phenomenon. The ability of citrus to bear fruit has the effect of carbohydrate and inorganic nutrition of the plant, except for the variety, the genetic characteristics among the lines, the variety of rootstock and the climatic factor. Many pilot studies have pointed out that the occurrence of flowers can be induced by stopping or blocking vegetative growth due to ring cutting, ligation and leaf removal, root temperature reduction, drought, root cutting, chemical treatment and diseases. In recent years, there are ways to use ring cutting or barbed wire to promote a variety of fruit trees such as pear,