东方钝绥螨种群消长规律及与其相关因子的数学模型

POPULATION DYNAMIC OF Amblyseius orientalis Ehara AND ITS MATHEMATICAL MODEL OF THE CORRELATION FACTORS

本文探讨了东方钝绥螨在柑桔园内的种群消长规律及与其相关因子的数学模型。结果表明，东方钝绥螨在柑桔园的自然种群数量高峰期在１０月下旬；采用逐步回归分析法得到东方钝绥螨（ｙ）与桔全爪螨（ｘ１）、温度（ｘ２）、湿度（ｘ３）、光照时间（ｘ４）、风速（ｘ５）的相关数学模型：ｙ＝－４６４．３０８２＋８．４９２３ｘ１＋１２．４３３８ｘ２－９．４２７２ｘ３－９．１１０５ｘ４＋４．７１７３ｘ５．且该螨与环境因子相关性由大到小顺序为：桔全爪螨、风速、温度、光照时间。

This paper reports the growth and decline of Amblyseius orientalis Ehara and mathematical model between Amblyseius orientalis Ehara and its correlation factors in citrus orchard.The research result indicates that the population number of Amblyseius orientalisy Ehara(y) is affected by the number of spider mites(x 1),wind speed(x 5),temperature(x 2),illumination time(x 4),and humid(x 3);and taking the method of step by step regression,the correlative mathematical model between them:y=-464.3082+8.4923x 1+12.4338x 2+9.4272x 3+ 9.1105x 4+4.7173x 5.