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0前言吉林省吉林市地处于长白山向松嫩平原过度地带,属于温带大陆性季风气候,四季分明。年平均气温3~5℃,常年有效积温一般在2 500~2 800℃,无霜期120~140天全市日照时数一般在2 400~2 600 h。境内水系发达,降雨量充足,自然条件十分适合水稻生长,属于北方单季稻种植区。全市水稻常年种植面积15万hm2左右,水稻田耕地面积大约占吉林省水稻田总量的20%,水稻产量稳定,稻米质量优秀,稻米加工产业发达,是全省乃至全国的重要优质水稻生产区。
0 Preface Jilin City, Jilin Province, is located in Changbai Mountain to the Songnen Plain over the belt, is a temperate continental monsoon climate, four seasons. The average annual temperature of 3 ~ 5 ℃, annual effective accumulated temperature is generally 2 500 ~ 2 800 ℃, frost-free period of 120 to 140 days the city sunshine hours are generally 2 400 ~ 2 600 h. The territory of the developed water system, adequate rainfall, natural conditions are suitable for rice growth, belonging to the northern single-season rice growing areas. The perennial planting area of rice in the whole city is about 150,000 hm2. The area of paddy land accounts for about 20% of the total paddy field in Jilin Province. The output of rice is stable, the quality of rice is excellent, and the processing industry of rice is developed. It is also an important quality rice production in the province and the whole country Area.