三化螟

三化螟预测模型的通径分析

Path Analysis on Forecasting Model for Yellow Rice Borer

1999和2000年的试验结果表明，Bt转基因水稻对鳞翅目害虫（稻纵卷叶螟、二化螟和三化螟等）具有良好的抗性。

Results of field trials of 1999 and 2000 showed that resistance of the Bt transgenic rice plant to Lepidoptera pests was well .

毒死蜱乳油防治水稻三化螟秧田药效试验

An experiment on seedling field prevent of rice yellow stem borer

水稻三化螟预测预报与防治对策研究

Study on Control Strategy and Prediction of Yellow Stem Borer

六六六土壤施药防治三化螟的试验

Preliminary study on the control of paddy borer with BHC soil treatment

三化螟多阶段管理决策模型

The Multistage Management Decision Model of Paddy Stem Bober

三化螟逐步回归统计预测模型的研究

Studies on Stepwise Regression Models of Rice Stem Borer

三化螟经济阈值的研究

Studies on the economic threshold of paddy stem borer

连作晚稻三化螟为害损失与防治指标研究连作晚稻秧田播后药剂除草试验

Studies on Weed Control with Herbicides in Double Cropping Late Rice Nursery after Sowing

5%锐劲特悬浮剂防治水稻三化螟的药效试验

The Experiment in the Effect of 5 % Regent on the Control of Rice Insects

模糊控制模型在三化螟数量预报中的应用探讨

Studies on Application of Fuzzy Cybernetics Model in the Quantity Forecasting of Rice Stem Borer

结果表明，广东稻区钻蛀螟虫主要种类有三化螟、二化螟、台湾稻螟、大螟。

The results showed that four major rice stem borers were existed in Guangdong rice fields .

早稻三化螟生命表及其分析

Study on the life table and its analysis of paddy stem borer on the early rice

三化螟幼虫滞育与稻株氮素的营养关系

The Diapause of the Yellow Rice Borer Larvae in Relation to the Nitrogenous Nutrition of Rice Plant

0.3%印楝素乳油及其混配剂防治稻纵卷叶螟和三化螟的药效

The Field Test of Using 0.3 % Azadirachtin Emulsion to Control Rice Leaf Roller and Paddy Borer

三化螟和二化螟发生均较重的安徽省和县稻螟赤眼蜂寄生率为171%，每一卵块羽化的蜂仅35头。

And in western Jintan only 17.1 % eggs was parasitized and 3.5 wasps emerged per egg mass .

第二代三化螟发生期长期预报方法研究

A Study on the Long Term Forecast Method of the Emergence Period of Yellow Rice Borer of Second Generation

抛秧栽培技术推广对三化螟发生为害程度的影响及其防治对策

The impact of extension of throwing seedling technique on the occurring and damage level of yellow rice borers and their control strategies

稻区种植制与三化螟种羣数量变动和为害程度的关系及稻螟防治策略的探讨

Cropping system in rice belts in relation to the population and damage of the paddy borer , with discussions on the tactics of control

三化螟发蛾产卵孵化及防治适期的初步研究

A preliminary study of the emergence , oviposition and hatching of the paddy borer with observation on the proper time for chemical control in the field

1984～1985年田间调查结果：它们对第2、3、4代三化螟卵块的捕食率分别为7.62%、3.00%、36.80～69.05%。

The predation rates were 7.62 % , 3.0 % and 36.8-69.1 % for the 2nd , 3rd , and 4th generation of paddy stem borer , respectively .

建立的系统模型能够提供包括农业防治、生物防治和化学防治措施在内的、对三化螟种群实施有效管理的最优决策方案。

The system model can provide on optimal decision strategy to effectively control PSB population , which contains measures of agricultural control , biological control and chemical control .

本文阐述了气候、食料、水稻栽培制度和生物等因素对三化螟种群数量变动的影响，并指出作为螟虫食料的水稻及其栽培制度的作用更为明显。

The main factors influencing the fluctuation of population include climate , food , cropping system and biotic factors , among which rice as a food plant and its cropping system play a more marked role .

水稻栽培制度的变革，改变了稻螟赖以生存的环境条件，导致二、三化螟的发生世代、发生型和为害程度发生了深刻的变化。

The change of rice cropping systems alters the environmental conditions essential to the multiplication and survival of rice stem borers , resulting in a conspicuous difference in the annual number of generations , the temporal position of the population peaks and the degree of infestation .

水稻三化螟害虫图像预处理，本文着重在图像剪裁、色彩变换、图像分割等方面进行了研究，由于利用机器视觉较难区分水稻害虫与周围环境，所以用人工干预的方法进行图像剪裁；

Pretreatment of yellow stern borer image . The paper put the emphasis in image clipping , color counterchanging and image segmentation and so on . As it hard to distinguish rice pest and ambience using by machine vision , image clipping is controlled by user .