水稻节水保护性耕作栽培的技术效果  

Effects of Water-Saving and Protective Tillage Technique in Rice

作　　者：李金峰[1] 许春林 初江 吕艳东[1] 李宏宇[1] 

机构地区：[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

出　　处：《中国水稻科学》2005年第6期567-569,共3页Chinese Journal of Rice Science

基　　金：黑龙江省科技攻关资助项目(GC04B305)。

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。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.

关 键 词：水稻田 保护性耕作 土壤理化性状 产量 

分 类 号：S511[农业科学—作物学]