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营口地区,西部面临渤海和辽河,中部地势平坦,东部为山区,年降雨量650—700毫米,无霜期165天左右。土壤有盐碱土、河淤土、山石土、山砂土等。主要作物有水稻、高粱、玉米、小麦、谷子、棉花、大豆,果树及林木较多。近年来,冬小麦发展很快,复种面积逐步扩大,栽培技术不断提高。由于地势复杂,气候适合,作物种类多,地下害虫的种类也较多,据初步调查,约有30余种,隶属于9个目6个科。特别是随着耕作制度的改
Yingkou area, the western part faces the Bohai Sea and the Liaohe River. The central part is flat and the eastern part is a mountainous area. The annual rainfall is 650-700 mm and the frost-free period is about 165 days. Soil salinization soil, river silt soil, rock soil, mountain sand and so on. The main crops are rice, sorghum, corn, wheat, millet, cotton, soybeans, fruit trees and more trees. In recent years, the development of winter wheat has been rapid, the area of multiple cropping has been gradually expanded, and cultivation techniques have been continuously improved. Due to the complicated terrain, suitable climatic conditions, many kinds of crops and many kinds of underground pests, about 30 species belong to 9 orders and 6 families according to the preliminary investigation. Especially with the farming system change