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本刊讯6月上旬,桂林市出现往年少有的持续(≥6天)高温(日最高气温34~36℃)高湿天气,致使柑桔生理落果严重。6月上旬持续高温多雨天气使柑桔生理落果严重的主要因素:一是促发夏梢和促使夏梢旺长,夏梢、新叶与果实争夺有限的树体营养,加剧果梢矛盾;二是生命力旺盛的夏梢顶端制造出大量的激素并向树体下方累积,迅速改变树体激素平衡,过量的激素积累在果实等部位,使树体养分偏向于往营
In early June, Guilin City, there have been rare last years (≥ 6 days) high temperature (daily maximum temperature 34 ~ 36 ℃) high-humidity weather, resulting in serious physiological citrus fruit drop. In early June, continuous high temperature and rainy weather caused serious physiological declension of citrus fruits. The main factors are: First, promoting summer shoots and promoting summer shoots, summer shoots, new leaves and fruit competition for limited tree nutrition, exacerbating the conflicts of fruit shoots; Is the vitality of the tip of the summer to create a large number of hormones and accumulated below the tree to quickly change the hormone balance of the tree, excessive accumulation of hormones in the fruit and other parts of the tree nutrients tend to Camp