稻田马铃薯连续免耕栽培对土壤理化性状的影响  

The Effect of the Continuous Potato Untilled Mulch Cultivation Pattern on Soil Physico-chemical Properties of Rice Fields

作　　者：李士敏[1] 刘桂华 蒋仕模 苟开礼 郑明强[1] 苏跃 李正红 

机构地区：[1]遵义市农业技术推广站,贵州遵义563000 [2]贵州省农业技术推广总站,贵州贵阳55001 [3]遵义市汇川区董公寺镇农业服务中心,贵州遵义563003

出　　处：《贵州农业科学》2009年第8期74-76,共3页Guizhou Agricultural Sciences

基　　金：贵州省农业厅专项资金项目"马铃薯免耕覆盖栽培技术研究与应用"(2003-08)和"优质专用马铃薯标准化栽培技术研究及应用"(2006)

摘　　要：为大面积推广应用稻田马铃薯免耕覆盖栽培技术支撑提供理论依据，对马铃薯免耕覆盖栽培的稻田土壤理化性状进行了连续定点测定，结果表明：稻田马铃薯免耕覆盖栽培较常规翻耕稻田表层（O～15cm）土壤的孔隙度，微团粒含量，有机质和速效N，P，K含量高，容重却略低；并随着持续免耕有改善表层土壤结构和肥力的趋势；但免耕对深层土壤（15～30cm）的理化性质影响较小。The soil physico-chemical properties of rice fields with the continuous potato untilled mulch cultivation pattern were continuously determined to provide the theoretical basis for popularizing the potato untilled mulch cultivation pattern in rice fields on a large scale. The results showed that the soil porosity and content of soil micro-aggregates, organic matter, active N, active P and active K of the surface soil with the continuous potato untilled mulch cultivation pattern were higher than those with the conventional potato cultivation pattern, and the continuous untilled pattern had a trend of improving structure and fertility of the surface soil but it had a little effect on physico-chemical properties of the subsoil below 15～30 era.

关 键 词：稻田 马铃薯 免耕覆盖栽培 土壤理化性状 

分 类 号：S532[农业科学—作物学]