隔根对小麦/玉米间套种植生长特性的影响  

Effect of Separating Root Method on Wheat and Corn Intercropping System

作　　者：郝艳如[1] 劳秀荣[2] 赵秉强[2] 孙伟红[2] 

机构地区：[1]中国科学院华南植物研究所,广州510000 [2]山东农业大学资环学院,泰安271018

出　　处：《麦类作物学报》2003年第1期71-74,共4页Journal of Triticeae Crops

基　　金：国家自然科学资金资助项目 (3 9870 5 2 4)

摘　　要：为了探讨作物根系与地上部的相互作用 ,通过田间和盆栽试验 ,研究了隔根对小麦 /玉米间套复合群体的地上部和地下部的影响。结果表明 ,隔根使边行小麦减产 11.15 %～ 18.5 4 % ,玉米减产 38.1%～ 4 3.4 %。隔根使边行小麦和玉米对 N、P、K的吸收量明显降低。在复合群体生育前期 ,隔根提高了小麦体内 N、P、K含量和玉米含 N量 ,降低了玉米 P、K含量 ,随生育期的延续 ,隔根降低小麦、玉米养分含量的趋势加剧。隔根使复合群体作物根系大小发生变化 ,小麦和玉米的根数减少 2 1.74 %和 2 3.0 4 % ,根长减少 32 .17%和 2 0 .99% ,根体积下降 19.2 3%和4 .13% ,同时使小麦、玉米的比活面也有所下降。With field and pot experiments, the effects of separating root on wheat and corn intercropping system were investigated at 3 different fertilizer supplying levels. The results showed that root was important in increasing yield and nutrition absorption of wheat/corn . The yield of margin wheat and corn were decreased 11.15% ~ 18.54% and 38.1%~43.4% by separating roots, respectively. The absorption of N?P?K in wheat/corn also reduced clearly. With the extension of growth period, the tendency of reduction of nutrient content in wheat/corn was increased when root was separated. The numbers, length and volume of wheat root decreased 21.74% ?32.17% and 19.23%, individually, that of corn root was also decreased 23.04%?20.99% and 4.13%.

关 键 词：隔根 小麦 玉米 套种 间种 生长特性 

分 类 号：S512.1[农业科学—作物学] S513