稻飞虱成虫有虫丛率与虫口密度关系的研究

探索利用稻飞虱成虫有虫丛率估测成虫虫口密度的方法和途径。本文基于稻飞虱成虫种群发生的田间调查数据，用种群密度（y）和有虫丛率（x）分别拟合指数函数、幂函数、一元二次函数、一元三次函数、直线函数和对数函数6种不同模型。结果表明，以一元三次函数方法估计精度最高，误差小，应用效果最好，并根据最优数学模型建立平均虫口密度（y）与有虫丛率（x）的关系速查表。生产中可以应用拟合的最优数学模型对田间稻飞虱成虫的发生进行监测。

The rice planthopper the adult insects plexus rate and population density relations

Explore the use of the planthoppers adult worms the plexus rate estimation methods and means of the adult population density. Based on the the planthoppers adult population of field survey data, population density (y) and insects plexus rate (x), respectively, fitting the exponential function, power function, a quadratic function, a cubic function, linear and logarithmic function 6 kinds of different models. The results showed that the highest estimation accuracy of a cubic function method, the error is small, and the application of the best and average population density and insects plexus rate (x) Fact Sheet (y) the optimal mathematical model. Optimal mathematical model fitting can be applied in the production of monitoring the occurrence of the field planthoppers adult.