期刊论文

Effect of Soil Tillage Method on Cd Accumulation and Distribution Characters of Double-Cropping Rice

中文

湖南生态科学学报

2095-7300

2019

6

2

11-19

10.3969/j.issn.2095-7300.2019.02.002

2018YFD0301005:国家重点研发计划 2017YFD0301500: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 CICPO2017003:南方粮油作物协同创新中心大学生研究性学习项目

本校为第一机构

为探讨镉污染稻田双季稻最优土壤耕作方式,于2015年～2017年,以陵两优211与威优46为材料,在湖南湘潭中度镉污染稻田开展定位试验,比较研究了双季免耕（G1）、双季翻耕（G2）、双季旋耕（G3）、早旋晚免（G4）、早翻晚免（G5）等5种土壤耕作方式下双季稻镉积累分配特性.结果表明:（1）晚稻根镉含量以成熟期最高,但早稻规律不明显.土壤耕作方式明显影响根镉含量,免耕处理最高,翻耕处理最低;（2）翻耕可降低早稻成熟期茎镉含量,但晚稻成熟期茎镉含量的处理间差异存在年际间差异;（3）早、晚稻叶镉含量随生育进程推进表现持续增长趋势,不同土壤耕作方式间叶镉含量差异显著,多年免耕可降低叶镉含量,而...

To explore the optimal soil tillage method for double-cropping rice in Cd contaminated paddy field,the positioning test was conducted in medium Cd contaminated paddy field of Xiangtan,Hunan in 2015-2017 with Lingliangyou 211 and Weiyou 46 as materials to comparatively study the Cd accumulation and distribution characters of double-cropping rice under the 5 soil tillage methods of notillage in two seasons(G1),plowing in two seasons(G2),rotaiy tillage in two seasons(G3),rotary tillage in early rice and no-tillage in late rice(G4)and plowing in early rice and no-tillage in late rice(G5).The resul...