论文部分内容阅读
开封西瓜以其个大、皮薄、瓤沙、脆甜、多汁、营养丰富而著称国内,1986年开封县仅种植西瓜一项收入就达2800万元,占全县种植业收入的15％。与其它经济作物相比,1亩西瓜相当于2亩棉花、3亩花生,4亩小麦、5亩玉麦的经济收入,而生长期却是
Kaifeng watermelon with its large, thin, dry sand, crisp sweet, juicy, nutritious and is known in China, in 1986 Kaifeng County, only a watermelon farming income reached 28 million yuan, accounting for 15% of the county’s crop revenue, . Compared with other cash crops, 1 mu of watermelon is equivalent to 2 mu of cotton, 3 mu of peanuts, 4 mu of wheat, 5 mu of corn, while the growth period is