1·To forecast the outbreak of pest insects is based on the estimation of population density.
准确估计害虫种群密度是进行虫害预测预报的基础。
2·The species of underground pest insects in the third Base of Guangxia Grape Winery Company is reported.
本文报道了宁夏广夏葡萄酿酒公司第三基地地下害虫的种类组成。
3·The results show that the red pine woods is a weak ecosystem, which may be the cause of spreading plant diseases and pest insects.
指出目前的赤松林是一种脆弱的生态系统，这是病虫害蔓延的原因。
4·Influence of sublethal insecticides on the behavior of aphid could be one cause of the insecticide-induced resurgence of the pest insects.
亚致死剂量杀虫剂对桃蚜行为学上的影响可能是诱致蚜虫再猖獗的原因之一。
5·The system collected more than 150 kinds of rice pest insects and diseases and offered many functions, such as data query, diagnosis and forecast.
本系统共收集了150多种水稻病虫害，集查询、诊断、预测和防治多种功能于一体。
6·The combined application of S101 and organophate or pyrethroid insecticides had obvious synergism to pest insects, its toxicity to mammalian was not increased.
S101与有机磷、拟除虫菊酯类杀虫剂复配防治害虫有增效作用，对动物不增毒。
7·The soluble powder:polythiocycloalkanes, has good effective on the control of pest insects such as two-spotted spider mite, cotton bollworm and citrus red spider mite ect.
简介了产品的毒性毒理概况和应用范围，尤其是防治棉红蜘蛛、棉铃虫、柑桔红蜘蛛等害虫的良好特性。
8·Objective to investigate the populations and the distribution of the indoor cockroaches in Suzhou urban districts, and to offer the data for controlling these pest insects.
目的掌握苏州市城区室内蜚蠊种群及其分布，为城市蜚蠊防制提供依据。
9·The main factor that affects population's uniformity is invalid plant including inbred lines, barren stalk rate, diseases and pest insects plant in populations of different yield level.
无效株是影响群体整齐度的重要因素，主要包括：自交株、空秆、小穗株及病虫害株等。
10·Based on the fauna composition and division characteristics of forest pest insects in Ziwu Mountains and damage of pests on important tree species, 3 control countermeasures were provided.
根据子午岭林区林虫区系组成和区划特征，结合主要树种害虫危害特点，提出了预防和除治子午岭林区森林害虫的3项措施。