CAJ | 학술논문

2013年对西宁地区多年生黑麦草＋草地早熟禾＋高羊茅混播草坪地下害虫种类构成及动态进行调查分析。结果表明：危害西宁地区草坪0～20cm土层的地下害虫主要为小云斑鳃金龟的幼虫蛴螬、沟金针虫和地老虎，0～10 cm土层蛴螬、沟金针虫和地老虎虫口密度分别为10．0～21．2头／m 2，1．6～3．4头／m2，0～7．6头／m2，10～20 cm土层蛴螬、沟金针虫和地老虎虫口密度分别为0．6～1．8头／m2，2．6～5．6头／m2，0～2．0头／m2，地下害虫主要分布于0～10 cm土层。多巴和生物园区的3种地下害虫在5－8月呈先增加后降低趋势，而三角花园的蛴螬虫口密度在5－6月呈显著下降趋势（P＜0．05）；多巴、生物园区和三角花园的蛴螬虫口密度均显著高于沟金针虫和地老虎（P＜0．05），危害最为严重。
2013년대서저지구다년생흑맥초＋초지조숙화＋고양모혼파초평지하해충충류구성급동태진행조사분석。결과표명：위해서저지구초평0～20cm토층적지하해충주요위소운반새금구적유충제조、구금침충화지로호，0～10 cm토층제조、구금침충화지로호충구밀도분별위10．0～21．2두／m 2，1．6～3．4두／m2，0～7．6두／m2，10～20 cm토층제조、구금침충화지로호충구밀도분별위0．6～1．8두／m2，2．6～5．6두／m2，0～2．0두／m2，지하해충주요분포우0～10 cm토층。다파화생물완구적3충지하해충재5－8월정선증가후강저추세，이삼각화완적제조충구밀도재5－6월정현저하강추세（P＜0．05）；다파、생물완구화삼각화완적제조충구밀도균현저고우구금침충화지로호（P＜0．05），위해최위엄중。
The composition and dynamics of soil pest in Lolium perenne+Poa pratensis+Festuca ela-ta mixed lawn was investigated in Xining region in 2013 .The results showed that the species of soil pests of lawn in Xining consisted of larva of Poyl phylla gracilicornis, Pleonomus canaliculatus and Euxoa segetum,their population densities was 10.0 ~21.2head/m 2, 1.6 ~3.4 head/m 2, 0 ~7.6 head/m 2 in 0~10 cm, and was 0.6~1.8 head/m 2, 2.6~5.6 head/m2 , 0~2.0 head/m2 in 10~20cm, respectively.The underground pests are mainly distributed in 0~10 cm soil layer.The population densities of soil pests of Dopa and Biological park showed a increasing to reducing trend from May to August,whereas the population density of a larva of Polyphylla gracilicornis in Triangu-lar Garden significantly decreased ( P<0.05) from May to June.The population density of a larva of Polyphyll agracilicornis in this three sites was significantly higher than that of Ploenomus ca nalicu-latus and Euxoa segetum (P<0.05),and Polyphylla gracilicornis was the most serious pest in this region.