中国水稻科学

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水稻节水保护性耕作栽培的技术效果

李金峰1;许春林2;初江3;吕艳东1;李宏宇1   

  1. 1黑龙江八一农垦大学, 黑龙江 大庆163319; 2哈尔滨市农业机械化研究所, 黑龙江 哈尔滨 150001; 3黑龙江省方正县农机推广站, 黑龙江 方正150800
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2005-11-10 发布日期:2005-11-10

Effects of Water-Saving and Protective Tillage Technique in Rice

LI Jin-feng , XU Chun-lin , CHU Jiang , LU Yan-dong , LI Hong-yu
  

  • Received:1900-01-01 Revised:1900-01-01 Online:2005-11-10 Published:2005-11-10

摘要: 研究了水稻田节水保护性耕作栽培技术体系,即采用留茬带状分层旋耕、苗带全层施肥、免除水整地、润田后插秧为技术主体的水稻保护性耕作节水栽培技术的效果。结果显示该技术可以降低稻田土壤的容重,提高稻田土壤的孔隙度和氧化还原电位;由于实施了集中施肥,苗带土壤耕层速效氮、磷、钾含量也得到提高。稻田土壤理化性状的改善,促使水稻根系生长发育良好,从而使地上部表现出生长优势,提高水稻产量。从产量构成因素看,单位面积穗数和千粒重的提高最明显和普遍。

关键词: 水稻田, 保护性耕作, 土壤理化性状, 产量

Abstract: The soil and rice plant characteristics, and grain yield and its components of rice under water-saving and protective tillage (WSPT) conditions were analyzed. Compared with conventional tillage method, the soil bulk density were decreased, and soil porosity, redox potential, available N, P, K contents in the soil layers of seedling were increased, the root dry weight and leaf N content of rice were enhanced under WSPT. The yield under WSPT was attributed to the increase in number of panicles per unit area and 1000-grain weight.

Key words: paddy field, protective tillage, soil characteristics, yield