论文部分内容阅读
四川省农业科学院实验农场第三生产队位于四川盆地西部成都市东效狮子山,海拔520米,年平均温度16.3℃(1951——1970年二十年平均数,下同),年雨量976毫米,年日照1239.2小时,年平均相对湿度82％。有苹果结果树112株,大部分树龄42年,品种以麻皮为主(外销统称青苹),株行距6.67米,是乔化稀植的旧式果园,多年来,按老习惯管理,产量一直不高。从1963年到1969年(1966、1968年未计在内)的五年中,单株平均产量58斤,其中最好的1965年也只有139斤,合亩产2,078斤。当时有人认为,苹果是北方果
The third production team of experimental farm in Sichuan Academy of Agricultural Sciences is located in Dongzishan Shizishan, Chengdu City, west of Sichuan Basin, at an elevation of 520 meters with an annual average temperature of 16.3 ℃ (1951-1970 average of 20 years, the same below) with an annual rainfall of 976 millimeters Year, 1239.2 hours of sunshine, annual average relative humidity of 82%. There are 112 apple fruit trees, most of which are 42 years old. The varieties are mainly made of hemp leather (the export is collectively referred to as Green Pheasant). The row spacing is 6.67 meters. It is an old orchard with sparsely planted trees. Over the years, not tall. In the five years from 1963 to 1969 (not counted in 1966 and 1968), the average yield per plant was 58 kg, of which the best was only 139 kg in 1965, yielding 2,078 kg of mu. At that time, some people think that the apple is the northern fruit