无核蜜柑座果率较低,一般只有3%左右。由于养分不足、干湿失调和病虫危害等原因,造成规律性的落花落果。一年有两次明显的高峰期:在湖南邵阳地区第一次高峰是在5月上中旬落果最多,即在初花后7—15天,当子房略有膨大时,连同果梗成批脱落。第二次高峰是在6月上中旬,当幼果达到指头大小时,枯黄后从蜜盘处脱落,直至7月上旬以后,才停止落果。为减少花果脱落,应采取以下保花保果技术措施。(一)合理施肥,增强树势因蜜柑树的开花结果和抽生枝叶是同时进行的,需要消耗大量营养元素,土壤养分不足,就会造成花器和幼果发育不良而引起脱落。因此,在栽培上,对缺肥、长势衰弱的桔 Low rate of non-nuclear satsuma fruit, generally only about 3%. Due to lack of nutrients, wet and dry disorders and diseases and pests and other causes, resulting in regular dropfall. There are two distinct peaks in a year: the first peak in Shaoyang in Hunan Province is the highest in the middle of May, which means that when the ovary is slightly enlarged after 7-15 days of initial flowering, Off. The second peak was in mid-June. When the young fruit reached the finger size, it fell off from the honey plate after being yellowish and did not stop falling until early July. To reduce the loss of flowers and fruits, should take the following Paul flower and fruit protection measures. (A) a reasonable fertilization and enhance the tree vigor due to the flowering of the citrus tree and pumping branches and leaves are carried out at the same time, need to consume a large number of nutrients, soil nutrients, it will cause flower and young fruit poor development caused by loss. Therefore, in cultivation, the lack of fat, growing weak orange