胡枝子刈割频度对根系及地上生物量的影响  

Cutting Frequency of Lespedeza bicolor on Root and Aboveground Biomass

作　　者：刘克敏 胡云峰 

机构地区：[1]黑龙江省延寿县延寿镇林业站,黑龙江延寿150700 [2]黑龙江省宁安市江东林场

出　　处：《防护林科技》2008年第4期19-20,共2页Protection Forest Science and Technology

摘　　要：试验设置了胡枝子林分0—7次刈割频度，随着刈割频度的增大，胡枝子根系质量、主根直径、根瘤个数及根瘤大小都逐渐降低；根的可溶性糖含量也随着刈割频度的增大而下降，地上生物量也呈下降趋势。1a之中刈割3次，每6周刈割1次的胡枝子，可得到最大超补偿生长，并获得最大地上生物量。Cutting frequency of Lespedeza bicolar stand was set up for 0-7 times. The quality of root, diameter of main root, the number and size of nodule of Lespedeza bicolar decrease with the increasing of cutting frequency; soluble sugar content of root decrease with the increasing of cutting frequency. Aboveground biomass shows downtrend. Cutting 3 times a year and cutting 1 time six weeks for Lespedeza bicolor, the most largest aboveground blomass and supercompensation growth can be obtained.

关 键 词：胡枝干 刈割频度 根系 地上生物量 

分 类 号：S758.5[农业科学—森林经理学]