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一、概况澳大利亚国土面积为7,682,300平方公里,人口为1,500万,沙漠半沙漠占全国总面积的35％。农作物有小麦、大麦、燕麦、棉花、甘蔗、亚热带水果等,森林面积占全国总面积的6％(东南及西南山地),主要树种有桉、棕榈及松树。农牧业以种小麦、养羊为主。地下水丰富,自流井利于农业及牧业。出口以农畜产品为主(主要为小麦、羊毛),其次为矿产。主要害虫有为害苜蓿的斑点蚜Therioaphis trifolii,蓝绿蚜Acyrthosiphon hondoi,阿蓿根象虫Sitona humeralis;为害小麦、高粱、玉米的普通粘虫Pseudoletia convecta。东亚粘虫P.separata;为害水稻的螟虫Tryporyza innotata、摇蚊Chironomus sp.,白背飞虱Sogatella furcifera,褐稻虱Nilaparvata lugens,普通粘虫、东亚粘虫;为害
I. Overview Australia has a land area of 7,682,300 square kilometers and a population of 15 million. Desert semi-desert accounts for 35% of the total area of the country. Crops include wheat, barley, oats, cotton, sugar cane and subtropical fruits. The forest area accounts for 6% of the total area in the country (southeast and southwest mountainous areas). The major tree species are eucalyptus, palm and pine. Agriculture and animal husbandry to wheat, sheep-based. Rich groundwater, artesian benefit agriculture and animal husbandry. Exports mainly agricultural products (mainly wheat, wool), followed by minerals. The main pests are thevenaphaphis trifolii, Acyrthosiphon hondoi, and Sitona humeralis; the common armyworm Pseudoletia convecta which infest wheat, sorghum and maize. East Asian armyworm P.separata; borer Tryporyza innotata, Chironomus sp., Sogatella furcifera, Nilaparvata lugens, Mythimna separata, East Asian armyworm;