论文部分内容阅读
对苹果树进行合理的疏花疏果,不仅可以提高果品的质量和数量,而且可以减少病虫果,防止大小年现象的发生。那么,如何才能搞好苹果树疏花疏果呢? 首先,要确定每棵苹果树的适宜留果量。确定留果量的方法主要有以下几种:(1)干周法:适用于树体完整的苹果树。先在离地面20厘米处测量出树干周长,然后,再根据土质、树势等、决定负载量;最后根据不同品种的每斤果子应有个数,求出适宜的留果量。即:每株应留果个数=周长×周长×0.08×0.6×每斤果个数。当然一般条件下按0.6计算,如立地条件好,也可按0.7—1斤计算每平方厘米结果量。(2)叶果比
The apple tree reasonable thinning thinning, not only can improve the quality and quantity of fruit, but also can reduce pests and diseases, to prevent the occurrence of the size of the year phenomenon. So, how to do a good job of thinning fruit thinning apple tree? First of all, to determine the appropriate amount of each apple tree to retain fruit. Main methods to determine the amount of fruit remaining in the following categories: (1) dry week method: apply to the tree complete apple tree. First measured at a distance of 20 cm from the ground trunk perimeter, and then, according to soil, tree vigor and so on, to determine the load; Finally, according to different varieties should have a few pounds of fruit, find the appropriate amount of fruit retention. Namely: the number of leaves should be per plant = perimeter × perimeter × 0.08 × 0.6 × number of fruit per kilogram. Of course, 0.6 under normal conditions, such as site conditions, but also by 0.7-1 kg per square centimeter results. (2) Fruit ratio