论文部分内容阅读
威海市河西果树园艺场有苹果树50亩主栽品种国光,树龄为22年生1851株,11年生35株,共1651株,平均每亩35株。从1977年起,开始了苹果壮树高产稳产栽培技术的开发,截至1987年计11年间,总产苹果2800多吨,年平均在等果率达95.12%,每亩产值达2450.57元。年平均每亩投资179.73元;11年平
Weihai Hexi Fruit Horticultural Field has 50 acres of apple trees, the main cultivated species Guoguang, aged 1851 18-year-old, 11-year-old 35, a total of 1651 plants, an average of 35 plants per acre. Since 1977, the development of high-yielding and stable cultivation techniques has been started. As of 1987, the total output of apples has exceeded 2,800 tons. The annual average fruit yield reaches 95.12% and the output value per mu reaches 2,450.57 yuan. The average annual investment of 179.73 yuan per mu; 11 years flat