High-yield pruning method for mulberries in north of China

Abstract

The invention relates to the field of mulberry planting, and in particular relates to a high-yield pruning method for mulberries in the north of China. The method aims to solve the problems such as anirregular tree shape, random spring pruning of branches and insufficient number of branches exist in a current pruning method for the mulberries in the north of China; and the method includes the following steps: 1) training a tree shape, planting the mulberries in late autumn and early winter, and performing cultivation to obtain a strong branch in a first year; performing cultivation to obtainthree strong branches in a second year; performing cultivation to obtain six strong branches in a third year; and performing cultivation to obtain twelve strong branches in a fourth year; 2) performing spring pruning: performing spring pruning on branches of one same mulberry by taking a main trunk as a center, determining the number of branches for spring pruning, determining the number of buds to be retained, and shortening the pruned branch distance; and 3) in the growth process after the tree shape is trained, performing one-branch-twice-cutting in spring and one-branch-twice-cutting in autumn. The method provided by the invention standardizes the reasonable number range of branches per mu of a mulberry field, innovates the high-yield structure of the mulberry field, improves the yieldof mulberry leaves to a maximum extent, reduces the costs of silkworm breeding, creates a high yield of the mulberry field and a new achievement of autumn mulberry shoot labor-saving breeding of silkworms, and fills the gap of the autumn mulberry shoot labor-saving breeding of silkworms in China.

Description

technical field [0001] The invention relates to the field of mulberry tree planting, in particular to a high-yield pruning method for northern mulberry trees. Background technique [0002] In the long-term production practice, the working people of our country have summed up many high-yield pruning techniques for mulberry trees according to the climate characteristics and the requirements of sericulture. The boxing cultivation method in Jiangsu and Zhejiang regions, the method of leaving big tree tails in Guangdong Province, the method of leaving branches and buds in Shandong, the spring and summer rotation cutting method in Shanxi, and the method of "picking leaves and leaving stalks" in autumn silkworm rearing, etc. Regardless of the south and the north, the labor-saving sericulture problem of mulberry in autumn has not been solved. Due to climatic factors, according to data reports, in normal years, the average annual mulberry leaf output per mu in southern mulberry gard...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a high-yield pruning method for northern mulberry trees in order to solve the problems existing in the existing northern mulberry tree pruning methods such as irregular tree type, random cuttings, insufficient number of branches, and low leaf yield in the golden season of silkworm rearing in spring.