中国水稻科学Issue(6)：617-623,7.DOI:10.3969/j.issn.1001-7216.2013.06.008
稻-油轮作连续免耕直播对作物产量及土壤理化性状的影响
Effects of Long-Term No-Tillage Direct Seeding Mode on Crop Yield and Soil Physiochemical Properties in Rice/Rapeseed Rotation System
摘要
Abstract
In order to study the effects of long-term no-tillage direct seeding mode on crop yield and soil physiochemical properties in rice/rapeseed rotation system,a comparison experiment with water-saving and drought-resistance rice (WDR)variety and a double low rapeseed variety was conducted under no-tillage direct seeding mode (NTDS)and conventional tillage direct seeding mode (CTDS)for 4 years,with CTDS as control.The results showed that the actual yield of WDR decreased by 8.10% at the first year,then the plant height,the spikelet number per panicle,the seed setting rate,the 1000-grain weight,grain yield,actual yield and harvest index increased with increasing no-tillage years,which led to an actual yield increase of 6.49% at the 4th year,compared with CTDS.Correlation analysis showed that the panicle length was significantly related to WDR’s actual rice grain yield.Under CTDS,decreased plant height,pod number per plant,1000-grain weight of rapeseed led to the loss of actual rice yield,and the loss decreased with no-tillage years,the actual yield under NTDS was the same as that under CTDS at the 4th year.Correlation analysis showed that the seed number per pod were significantly related to rapeseed’s actual yield.Compared with CTDS,the pH value of NTDS decreased every year,the contents of soil organic matter and the total N of the NTDS increased.The NTDS mode are propitious to improve the paddy soil fertility in the top layer(0-5 cm).In the top layer under NTDS mode,the soil bulk decreased,while the contents of soil organic matter,the total N and the available N increased;in the 5-20 cm layer under NTDS mode,the soil bulk,the contents of soil organic matter,the total N increased,while the available N,K decreased.NTDS is benefit to increase the crop yield under the test.And it is propitious to improve the paddy soil fertility in the top layer.关键词
免耕/直播/作物产量/土壤理化性状/节水抗旱稻/双低油菜Key words
no-tillage/direct seeding/crop yield/soil properties/water-saving and drought-resistance rice/double low rapeseed分类
农业科技引用本文复制引用
杜兴彬,罗利军,陈晨,李双喜,刘国兰,王飞名,张安宁,顾晓君,余新桥..稻-油轮作连续免耕直播对作物产量及土壤理化性状的影响[J].中国水稻科学,2013,(6):617-623,7.基金项目
上海市科技兴农重点攻关项目[沪农科攻字(2010)第1-1号] （2010）
上海市青年科技启明星计划资助项目(11QA1405900) （11QA1405900）
国家863计划资助项目(2012AA101102) （2012AA101102）
