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应用二次正交旋转组合设计方法建立贺氏菱头蛛Bianor hotingchiehi和食虫沟瘤蛛Ummeliata insecticeps对稻纵卷叶螟Cnaphalocrocis medinalis和稻褐飞虱Nilaparvata lugens捕食作用的数学模型分别为:Y'cm=3.9984-0.2083 x1+0.7917 x2+2.1250 x3+0.2917 x4+0.5625 x1x2-0.1875 x1x3+0.1875 x1x4+0.8125 x2x3+0.1875 x2x4+0.1875