辽宁农业科学Issue(6)：1-5,5.
秸秆还田对防止玉米早衰的效果研究
Effect of Maize Straw Return to Soil on Premature Senescence
摘要
Abstract
To understand the effects of straw return on soil fertility and premature senescence of maize experiments were conducted with long-term positioning pot experiment and laboratory analysis methods. The results show that , after improvement of soil fertility 6 years , soil bulk density in 0 ~ 20 cm soil layer was reduced by 1.53% ~ 8. 39% , total porosity of soil increased by 6. 01% ~ 15. 65% , soil microaggregate composition structure improved, soil organic matter, total nitrogen, total phosphorus, available phosphorus increased, total potassium , available nitrogen and the content of rapidly available potassium stabilized, field capacity increased by 4. 53% -10.25% , increased the yield of maize, improvement of soil fertility could promote the growth of maize root system, ensure moisture and nutrient uptake and use, effectively prevent premature senescence of maize.关键词
玉米秸秆还田/玉米早衰/培肥土壤Key words
Maize straw return/ Premature senescence/ Improvement of soil fertility分类
农业科技引用本文复制引用
穆迎春,汪仁,孙文涛,宫亮,李小婉,汪岐禹..秸秆还田对防止玉米早衰的效果研究[J].辽宁农业科学,2012,(6):1-5,5.基金项目
国家"科技支撑"项目(2011BAD16B12-01,2012BAD04B03) （2011BAD16B12-01,2012BAD04B03）
加拿大国际植物营养研究所(IPNI)项目资助 （IPNI）
辽宁省重大科技专项(2011201028). （2011201028）
