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我所自一九七○年以来,开展了梨树幼树果粮间作及丰产技术的研究,取得了果粮双丰收的可喜成果。一九七○年定植的四亩鸭梨中冠形果粮间作丰产试验田,株行距5×7米,每亩19株,实现了三年结果,五年丰产。一九七四年(第五年)平均亩产1615.4斤超过了我省成年梨树平均亩产水平。一九七五至一九七七年(第六年至八年)产量逐年上升,各年平均亩产分别为3494.6斤,4596.1斤,5414斤。在取得上述梨果产量的同时,梨树行间,间作小麦、豆类等作物,每年平均亩产均在
Since 1970, I have conducted research on the intercropping and high yielding techniques of pear tree young fruit trees and achieved gratifying results in the double harvest of fruit and vegetables. In 1970, four-acre pear-shaped crown-shaped fruit grains were intercropped for high-yield test fields. The spacing between the rows was 5 × 7 meters and 19 plants per acre, achieving a three-year result and a five-year high yield. In 1974 (the fifth year) an average of 1615.4 kg per mu exceeded the average yield of adult pear trees in our province. From 1975 to 1977 (the sixth year to the eighth year), the output increased year by year, with average yields of 3494.6 kg, 4596.1 kg and 5414 kg respectively in each year. At the same time as the above-mentioned production of pear fruits, crops such as wheat and beans intercropped among pear trees and the average mu yield per year