栽插密度和水层对水稻化感品种抑草作用的影响  

Effects of Transplanting Density and Water Depth on Interference of Allelopathic Rice in Weeds

作　　者：李贵[1] 吴竞仑[1] 王一专[1] 刘丽萍[1] 

机构地区：[1]江苏省农业科学院植物保护研究所,南京210014

出　　处：《上海交通大学学报（农业科学版）》2007年第6期561-565,共5页Journal of Shanghai Jiaotong University(Agricultural Science)

基　　金：国家自然科学基金重点项目(30430460);国家"十一五"科技支撑计划项目(2006BAD08A09)

摘　　要：选用具有化感特性的华抗草78和江苏地区主栽的扬稻6号,通过田间试验明确在不同栽插密度和不同水层深度条件下水稻品种的抑草效应,结果表明:每公顷45～60万苗的水稻栽插密度、水稻移栽后10 cm水层保持15 d的条件下华抗草78对稗草、异型莎草和陌上菜的株防效和干重防效明显,增产效果显著。Field experiments were conducted to examine the effects of rice transplanting density and soil surface water depth on the interference of allelopathic rice in bamyardgrass [Echinochloa crusgalli （L.） Beauv], difformed galingale （Cyperus difformis L.） and procumbent falsepimpeme [Lindernia procumbens （Krock.） Philcox]. The results showed that HuangKangcao 78 could significandy control the plant numbers and dry weight of weeds when the rice transplanting density was 450～600 thousand seedling/hm^2 and 10 cm water depth on soil surface was retained 15 days after rice transplanting, and which could increase the yield of HuangKangcao 78 markedly.

关 键 词：水稻 密度 水层 化感 杂草 

分 类 号：S510.53[农业科学—作物学]