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近20年来,我国板栗生产有了长足发展,栽培面积大幅度增长。但单位面积产量不高,而坐果率低是重要原因之一。1·坐果率低的原因(1)营养生长与生殖生长失调板栗春季生长较旺盛,其枝叶大量生长与开花结果同时进行,造成营养生长与生殖生长强烈的营养竞争,导致生殖生长养分不足而使
In the past 20 years, China’s chestnut production has made great strides and its cultivation area has risen sharply. However, the yield per unit area is not high, and fruit setting rate is one of the important reasons. Reasons for low fruit setting rate (1) Abnormal growth of vegetative and reproductive growth In spring, chestnut grows more vigorously, and its foliage growth and flowering result at the same time, resulting in strong nutrition competition between vegetative growth and reproductive growth, resulting in shortage of nutrients in reproductive growth