不同耕种方式对稻茬小麦根、叶生长特性的影响  

Effects of Different Tillage Methods on the Growth Properties of Root and Leaf of Wheat Following Rice

作　　者：王小纯[1,2] 马新明[1,2] 史瑞青 袁剑平[1,2] 

机构地区：[1]河南农业大学农学院 [2]河南省农业厅

出　　处：《河南农业大学学报》1997年第3期212-216,231,共6页Journal of Henan Agricultural University

基　　金：河南省"八五"高产攻关课题

摘　　要：研究了旋耕条播、犁耧播种及撒播套种（免耕）３种耕种方式对稻茬小麦根、叶生长特性的影响。结果表明，在０～４０ｃｍ耕层内，旋耕条播比免耕小麦的根系体积大、分布深、活力强，而且小麦个体生长稳健，单株绿叶数高峰值在拔节期，单株叶面积最大值在抽穗期，均较免耕播种小麦晚一个生育时期，旗叶功能期延长５ｄ，光合强度提高５０６ｍｇ·ｄｍ－２·ｈ－１。不同耕种方式对小麦发根量（包括初生根和次生根）影响不大，对次生根的发生时期有明显作用。A study was carried out on the effect of different tillage methods on the growth properties of root and leaf of wheat following rice.The results showed that different cultivation had little effect on the number of root (including primary root and secondary root),but had significant effect on the forming stage of the secondary root.In the soil depth of 0～40cm,compared with non tillage wheat,the gyrotilling and row seeding wheat had a larger root volume,a deeper root streching and a greater root activity;therefore,the individual of gyrotilling and row seeding wheat grew more healthily than that of non tillage wheat the maximum number of green leaves at elongation stage and the maximum leaf area in heading stage,which was one stage later than that of non tillage wheat;Besides,the SOD activity of flag leaf was higher,the functional duration of flag leaves was delayed,and the photosythesis capcity was better,all these formed the biological basis of a high yield gyrotilling and row-seeding wheat.

关 键 词：稻茬 小麦 根 叶 生长特性 

分 类 号：S512.101[农业科学—作物学]