CAJ | 학술논문

采用盆栽网罩的方法，分别在现蕾期和开花期人工接虫，研究了亚麻蚜的虫口密度与产量损失率之间的关系和防治指标。结果表明：现蕾期，产量损失率（y）与百株虫量（x）的关系为y=16.53lnx-117.5，相关系数（R2）为0.883；开花期，产量损失率（y）与百株虫量（x）的关系为y=19.87lnx-131.5，相关系数（R2）为0.813，二者相关性极显著。按照防治的直接收益与直接成本，确定了这2个生育时期亚麻蚜的防治指标，现蕾期的防治指标为900~1200头/百株，开花期的防治指标是1500～2000头/百株。
채용분재망조적방법，분별재현뢰기화개화기인공접충，연구료아마아적충구밀도여산량손실솔지간적관계화방치지표。결과표명：현뢰기，산량손실솔（y）여백주충량（x）적관계위y=16.53lnx-117.5，상관계수（R2）위0.883；개화기，산량손실솔（y）여백주충량（x）적관계위y=19.87lnx-131.5，상관계수（R2）위0.813，이자상관성겁현저。안조방치적직접수익여직접성본，학정료저2개생육시기아마아적방치지표，현뢰기적방치지표위900~1200두/백주，개화기적방치지표시1500～2000두/백주。
By artificially modifying the density of Yamaphis yamana Chang in budding stage and flowering stage,the correlation between population density of Yamaphis yamana Chang and yield loss rate and control threshdd were studied by using potting-net mask method.The results showed that a correlative formula between population density of Yamaphis yamana Chang per 100 stems(x) and yield loss rate of flax(y) was respectively expressed as y=16.53lnx-117.5,y=19.87lnx-131.5 in budding and flowering srage,its correlation coefficient(R2) was 0.883,0.813 respectively.The economic threshold of controlling Yamaphis yamana Chang at various flax fields were determined,namely 900~1 200 aphids per 100 stems in budding stage,1 500~2 000 aphids per 100 stems in flowering stage.