期刊论文

Effects of Soil Tillage Methods on Yield Components and Cadmium Accumulation in Panicles of Double-cropping Rice

中文

水土保持学报

1009-2242

2019

33

3

348-357

10.13870/j.cnki.stbcxb.2019.03.051

2017YFD0301500:国家重点研发计划 2018YFD0301005:国家重点研发计划 201503123-05:农业部行业计划 17C0771:湖南省教育厅科学研究项目

本校为第一机构

为比较研究不同土壤耕作方式(翻耕、旋耕、免耕)对南方双季稻区水稻产量构成与稻穗镉积累分配特性的影响,探讨镉污染稻田双季稻最优土壤耕作方式,2015-2017年,以“陵两优211”与“威优46”为早、晚稻供试品种,在湖南省湘潭县易俗河镇中度镉污染稻田(全镉含量0.86 mg/kg)开展定位试验,比较研究了双季免耕、双季翻耕、双季旋耕、早旋晚免、早翻晚免5种土壤耕作方式下土壤有效镉含量、双季稻的产量构成与穗镉积累分配情况.结果 表明:(1)双季稻产量以双季翻耕处理最高,早翻晚免处理次之,双季旋耕与早旋晚免处理再次之,双季免耕处理最低;翻耕处理产量最高的原因在于其有效穗数与每穗粒数较高.(2)齐穗...

To compare the effects of different soil tillage methods(ploughing,rotary tillage and no tillage)on rice yield composition and cadmium accumulation and distribution traits in rice panicles in southern doublecropping rice fields,and to explore the optimal soil tillage method for double-cropping rice in cadmium-contaminated rice fields,taking“Lingliangyou 211”and“Weiyou 46”as early and late rice varieties,the available cadmium content in soil,rice yield components and spike cadmium accumulation and distribution of doublecropping rice under fi...