CAJ | 학술논문

在少花蒺藜草Cenchrus pauciflorus严重侵染区,采用3种不同行距种植多年生苜蓿Medicago sativa进行生物控制试验,旨在探索有效控制少花蒺藜草扩散技术.结果表明:苜蓿种植第2年,不同播种行距均能够抑制少花蒺藜草的发生数量,其中以行距30 cm的效果最好,减少至1 200株/hm~2左右.对于少花蒺藜草形态特征及繁殖特性的影响效果,不同播种行距处理间存在差异,其中在30、40 cm行距处理苜蓿地中发生的少花蒺藜草均表现出胁迫态,播种行距为50 cm时,少花蒺藜草株型多为半直立或匍匐型,分蘖(分枝)能力较强,繁殖能力也较强.综合分析,采取30 cm行距种植多年生苜蓿能够更有效的控制少花蒺藜草肆意扩散,可以在少花蒺藜草防控工作中推广应用.
재소화질려초Cenchrus pauciflorus엄중침염구,채용3충불동행거충식다년생목숙Medicago sativa진행생물공제시험,지재탐색유효공제소화질려초확산기술.결과표명:목숙충식제2년,불동파충행거균능구억제소화질려초적발생수량,기중이행거30 cm적효과최호,감소지1 200주/hm~2좌우.대우소화질려초형태특정급번식특성적영향효과,불동파충행거처리간존재차이,기중재30、40 cm행거처리목숙지중발생적소화질려초균표현출협박태,파충행거위50 cm시,소화질려초주형다위반직립혹포복형,분얼(분지)능력교강,번식능력야교강.종합분석,채취30 cm행거충식다년생목숙능구경유효적공제소화질려초사의확산,가이재소화질려초방공공작중추엄응용.
A biological treatment trial on effects of different row spacing of alfalfa on controlling seriously invaded Cenchrus pauciflorus was conducted. The results showed that the row spacing treatment could reduce the number of C. pauciflorus and the best was 30 cm which decreased the density to around 1 200 hm~2. But the effects on the morphological and reproduction characteristics of C. pauciflorus were difference, these characteristics showed a stressed status in the treatments of 30 cm and 40 cm row spacing. It showed the lower height, fewer branches and seeds. But in treatment of 50 cm row spacing, the average number of branches was over 9, the number of seed setting was over 180 and the reproduction ability was still strong. It could be concluded that 30 cm of row spacing was the best for the control of C. pauciflorus.