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农业昆虫地理区划的研究,目的在于探索农业昆虫的分布规律和区域性的发生规律,以便利于植物检疫、虫情测报工作的开展,以及能结合地区特点,较合理地部署害虫防治和天敌资源的保护利用工作。它是农业自然区划研究工作中的一个重要组成部分,意义是十分重大的。作者根据三十多年来对江西的了解,提出有关江西省农业昆虫地理区划的初步意见如下。一、全省主要地貌和自然条件概述江西地处北纬24°24′—32°12′,东经113°29′—118°35′,在我国长江下游南岸,南北长约650公里,东西宽约500公里,北连湖北、安徽,南邻广东,西靠湖南,东接浙江、福建,面积16.67万平方公里,拥有3800多万亩耕地,9,000多万亩山林,东、西、南三面群山环绕,中部丘陵起伏,北部有我国第一大淡水湖—波阳湖,总的地貌特征是:周高中低,南高北低,缓缓倾斜,形成一个以波阳平原为底部的不对称盆地。“六山一水二分田,一分道路和庄园”,是对本省地貌构成状况的恰当概括。
The purpose of this study is to explore the distribution rules of agricultural insects and the rules of regional occurrence in order to facilitate the development of plant quarantine and insect detection and the rational deployment of pest control and natural enemy resources Protection and utilization of work. It is an important part of agricultural naturalization research, and the significance is very significant. Based on more than three decades of understanding of Jiangxi Province, the author put forward his preliminary opinions on the geographical division of agricultural insects in Jiangxi Province. I. General Description of the Major Landforms and Natural Conditions in the Province Jiangxi is located at latitude 24 ° 24’-32 ° 12 ’and longitude 113 ° 29’-118 ° 35’ east longitude. It is about 650 km long in the lower reaches of the Yangtze River in our country, 500 km north of Hubei and Anhui, south of Guangdong, Hunan, west of Hunan, east Zhejiang, Fujian, an area of 166,700 square kilometers, with more than 3800 acres of arable land, more than 9,000 acres of forest, east, west and south mountains Surrounding and central hilly region, there is the largest freshwater lake in China --- Bo Yang Lake in the north. The general topographical features are: high in the week, low in the middle, low in the south, high in the north and low in the north, forming an asymmetrical basin with the bottom of the Yangyang plain . “Six hills and one water field, two roads and a manor” are the proper summaries of the formation of the province’s landscape.