CAJ | 학술논문

采用田间小区试验法研究14种不同密度下稗生物量的变化趋势及其对春玉米产量的影响。结果表明：在低密度下，稗生物量随着密度的变大而变大；当稗密度达到800株/m2以上时，种内竞争加剧，稗的生物量反而有所下降。在低密度下，春玉米产量损失率随着稗密度的增加基本上呈直线上升的趋势；但是当稗密度超过400株/m2后，春玉米产量损失率呈减速增加的趋势。
채용전간소구시험법연구14충불동밀도하패생물량적변화추세급기대춘옥미산량적영향。결과표명：재저밀도하，패생물량수착밀도적변대이변대；당패밀도체도800주/m2이상시，충내경쟁가극，패적생물량반이유소하강。재저밀도하，춘옥미산량손실솔수착패밀도적증가기본상정직선상승적추세；단시당패밀도초과400주/m2후，춘옥미산량손실솔정감속증가적추세。
The interaction between biomass of Echinochloa crus-galli (L.) P.Beauv.and the yield of spring maize were investigated at 14 densities under field conditions .Both biomass of E.crus-galli and the yield loss rate of spring maize in-creased as the density of the weed increased under a low density regime .Intraspecific competition intensified and biomass of E.crus-galli decreased when the plant density was above 800 plants/m2 .However,the yield loss rate of spring maize increased more slowly when the weed density was above 400 plants/m2 .