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我区苹果、葡萄栽培面积很大。由于海拔较高、气温偏低和干燥少雨的影响,造成果品产量低、质量差。为了提高苹果、葡萄的产量和品质,我们引进了银灰膜覆盖果树新技术。于1986年8月至9月在涿鹿县栾庄乡唐家德村和保岱乡上洪寺村,对苹
My district apple, grape cultivation area is very big. Due to the high altitude, the temperature is low and dry and less rain, resulting in low fruit yield, poor quality. In order to improve the yield and quality of apples and grapes, we introduced a new technology of silver gray film covering fruit trees. In August 1986 to September in Zhuolu County Luanzhuang Township Tang Jiade village and Bao Dai Township Hong Temple Village, Ping