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柿子是落花落果非常严重的树种,主要原因是授粉受精和营养不足引起。为保住产量。我区(柿园)大量推广采用环割、环剥等技术措施保花果,确实收到了很好的效果。但目前的一些柿园树势急剧变弱、黄化,甚至严重落叶、落果、死亡,造成严重的损失。环割、环剥,是通过阻断地上部的碳水化合物向下运输,致使短时间内地上部营养相对集中,而满足花果极限需求。但果农往往没有考虑留果量,使树体负荷过大,而且连年使用此法,树体受到的刺激过大,致使衰弱、黄化。
Persimmon is a very serious deciduous tree species, mainly due to pollination and fertilization caused by inadequate nutrition. To keep production. I District (Shiyuan) a large number of promotion using ring cutting, girdling and other technical measures Pauli, did receive very good results. However, at present, some shrubbery trees suddenly weaken, yellowing, and even severely deciduous, deciduous, and deadly, causing serious losses. Ring cutting, girdling, is by blocking the downward transport of carbohydrate above the ground, resulting in a short period of time to concentrate nutrition above and below, and to meet the limit needs of flower. However, farmers often do not consider the amount of retained fruit, so that the burden on the tree is too large, but after years of using this method, the tree is too much stimulation, resulting in weakness, yellowing.