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一、概况浙东平原中低产稻区系指位于三江流域(甬江、姚江和奉化江)和钱湖灌区一片而言。据初步统计,约有100万亩,占平原面积的75％。常年粮食亩产500～700公斤,低于全市的平均水平。该地区气候温和,雨量充沛,作物种类颇多,种植历史悠久,是重要的产粮区和商品粮基地。由于大面积分布着中低产田,是全市产量上不去的一大障
I. Introduction Middle and low-yielding rice-producing areas in the eastern Zhejiang Plain are located in the Sanjiang River (Yongjiang, Yaojiang and Fenghua River) and Qianhu Irrigation District. According to preliminary statistics, about 100 million mu, accounting for 75% of plain area. Perennial grain yield 500 ~ 700 kg, lower than the city’s average. The region has a mild climate, abundant rainfall, a large variety of crops and a long history of cultivation, which are important grain-producing areas and commodity grain bases. Due to the large area of distribution of low-yielding fields, the city’s output does not increase a major obstacle