摘要
地下害虫是西吉农作物的主要害虫。1990年该县白城乡受地下害虫严重危害，面积达2万余亩，部分田块绝产。地下害虫的优势种为黑皱鳃金龟TrematodestenebrioidesPallas，华北大黑鳃金龟Holotrichiaoblia（Fald）和细胸金针虫AgriotesfuscicollisMiwa。其发生程度受不同田块，前茬作物和5～6月份的降水的明显影响。在化学防治上应可采用50％辛硫磷乳油按种子量0．2～0．3％，或60％3911乳油按种子量0．2％拌种，或以上述两种农药进行土壤处理。
Underground pests are serious insect pests of crops in Xiji county, Ningxia. In1990. the Crops in ten thousands ha. were infested seriously by the underground pests in Baichengregion in the county and about 1.5 thousands ha.were ploughed to plant other plants. Thedominant species,such as Trematodes tenehrioides Pallas, Holotrichia oblia (Fald.) and Agriotesinfluenced by the foremer crops and the precipitation in miwa ,are different densities and numbers in the various field types, which wereinfluenced by the foremer crops and the precipitation in May and June.The optimal methods ofchemical control are seed dressing with 50% Phoxim and 60% Phorate of 0.2-0.3% of seedweight, soil treatment that 0.5 kg of the aforementioned 2 insecticides was mixed into 25 kg ofsoil and 5 kg of water, then spreding with ploughing into the field.
出处
《宁夏农学院学报》
1997年第1期78-83,共6页
Journal of Ningxia Agricultural College
关键词
地下害虫
生物学规律
学防治
宁夏西吉
underground pest
biological regularity
chemical control
Xiji County in Ningxia
