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柑桔正常的落花落果是树体自身对生殖生长与营养生长的调节,对维持树势十分必要。但落花落果过多必然破坏两者的平衡,并导致减产。因此必须掌握其规律,以采取相应措施防止严重落花落果的发生。有关沙田柚的落花落果规律少见报道,特于1989～1990年进行了观察、研究。 材料与方法 试材为本所1981年春栽植的酸柚砧沙田柚,树势正常,花果量中等,花期进行人工异花授粉。于现
The normal fall and fall of citrus is the regulation of reproductive growth and vegetative growth of the tree itself, which is very necessary to maintain the tree vigor. However, falling too much will inevitably undermine the balance between the two, and led to cut. Therefore, we must grasp its laws to take appropriate measures to prevent the occurrence of serious plunge. There are few reports on the law of fall and fall of Shatian pomelo, which was observed and studied from 1989 to 1990. MATERIALS AND METHODS The test material was Sour grapefruit anvil pomelo root pomelo planted in the spring of 1981. The tree vigor was normal and the flowering fruit volume was moderate. Flowering was carried out by artificial cross-pollination. In the present