论文部分内容阅读
上海地区的果树绝大部分是1958年以后种的,很多果苗来自外地,品种比较混杂,有的品质差,有的产量低,不抗病。如果把原有果树翻掉,重新种上小苗来换品种,需要好几年才能结果。采用多头高接的方法更换品种,就能够利用原有果树的骨干枝,迅速恢复原有的树冠;很快结果.如南汇县园艺场有一片五年生的“黄金”桃,结果很少,1963年秋季用多头高接的方法改接小白凤,1965年就开始结果,到1968年达到了平均亩产46担的高额丰产。周西公社果园的“黄金”桃在1964年秋改接“玉露”桃,1968年也
Most of Shanghai’s fruit trees are planted after 1958. Many fruit seedlings come from other places. The varieties are rather mixed, some are poor in quality, others are low in yield and are not resistant to disease. If you turn the original fruit trees, replanting seedlings to change species, take several years to result. The use of long high-way replacement of species, we can use the backbone of the original fruit trees quickly restore the original canopy; soon results, such as Nanhui County horticultural field has a five-year-old “gold” peach, with very few results, 1963 The fall of the year with a long way to pick the small white Phoenix, the results began in 1965, to 1968 reached 46 acres of high yield average yield. Zhouxi commune orchard “golden” peach in the autumn of 1964 changed the “Yulu” peach, 1968 also