期刊论文

Comparative Studies on Crop Yield,Profit,NitrogenAbsorption and Soil Nutrient Dynamics in Paddy Fieldsunder Different Crop Rotation Systems

中文

江西农业学报

1001-8581

2017

29

12

1-7,31

10.19386/j.cnki.jxnyxb.2017.12.01

CARS-12:国家油菜产业技术体系项目 20171BCB23082:江西省***人才资助计划 20152BCB24013:创新团队建设项目 20162CBS009:博士启动基金

本校为第一机构

于2012～2013 年在江西省油菜主产县（市）开展田间试验,比较研究了稻田不同轮作系统对作物产量、经济效益、养分吸收利用以及土壤养分含量的影响.结果表明：与冬季休闲后种植水稻相比,冬季种植油菜后早、中、晚稻的平均单株有效穗数分别提高了7.54%、2.63%和0.47%,平均单株实粒数分别提高了12.73%、5.82%和0.03%,平均产量分别提高了10.03%、8.75%和4.59%;在6 种轮作系统中,以油菜-早稻-晚稻轮作系统的经济效益最高;冬季种植油菜可以提高早稻和中稻的氮、磷、钾素的总积累量和吸收利用率;冬季种植油菜还可以提高稻田土壤的有机质、有效磷和速效钾的含量,降低稻田土壤的pH 值.

During 2012～2013,in four counties (cities)of Jiangxi,the field experiments were carried out to compare the effects of different crop rotation systems in paddy fields on the crop yield,economic profit,nutrient absorption and utilization,and soil nutrient content. The results showed that:in comparison with planting rice after winter fallow,planting rice after the harvest of winter oilseed rape increased the average single-plant effective panicles of early rice,middle rice and late rice by 7.54%,2.63%and 0.47% respectively,enhanced the average si...