首页|期刊导航|中国农业科学（英文版）|Effects of Root Penetration Restriction on Growth and Mn Nutrition of Different Winter Wheat Genotypes in Paddy Soils
中国农业科学（英文版）2002，Vol.1Issue(6)：667-673,7.
Effects of Root Penetration Restriction on Growth and Mn Nutrition of Different Winter Wheat Genotypes in Paddy Soils
Effects of Root Penetration Restriction on Growth and Mn Nutrition of Different Winter Wheat Genotypes in Paddy Soils
摘要
Abstract
Effects of root penetration restriction on the growth and Mn nutrition of different wheat genotypes were studied in paddy soils using a method of nylon net bags (400 mesh) buried in the soil. The results showed that the spatial distribution of Mn in paddy soils played an important role in the growth and Mn nutrition of wheat crops. In the treatment where wheat roots were restricted in the plough layer by nylon net bags,the symptoms of Mn deficiency in wheat occurred much earlier and more seriously than usual. Of the two tested wheat genotypes, 80-8 was tolerant to Mn deficiency while 3295 was sensitive to Mn deficiency, respectively. The restriction of root penetration intensified symptoms of Mn deficiency of the Mn-deficient sensitive genotype (3295). The experiment demonstrated that well-developed roots with a strong ability to penetrate into the Mn-rich deep soil layer might explain the better tolerance of Mn deficiency in the tolerant genotypes.关键词
Wheat/Genotype/Manganese/Root/Paddy soilKey words
Wheat/Genotype/Manganese/Root/Paddy soil引用本文复制引用
L(U) Shi-hua,ZENG Xiang-zhong,LIU Xue-jun,ZHANG Fu-suo..Effects of Root Penetration Restriction on Growth and Mn Nutrition of Different Winter Wheat Genotypes in Paddy Soils[J].中国农业科学（英文版）,2002,1(6):667-673,7.基金项目
This work was supported by the Major State Basic Research and Development Program of the People's Republic of China (No. 1999011707) and the National Natural Scientific Foundation of China (No. 39600089 and 39801013). （No. 1999011707）
