板栗原产我国,栽培历史长,分布广,更有大宗的栗树资源。然而产量却远远落后于其他果树。经调查研究,板栗低产的原因主要是采用实生繁殖所致。为此,我市自1978年开始对低产大树进行高接换头,其年产量由原来的50多万斤增至270多万斤,并出现大面积亩产419斤以上的先进单位。1983年秋全国“板栗大树高接换种”现场会在我市召开。代表们一致认为:要搞好板栗生 Chestnut native to China, long history of cultivation, widely distributed, more large chestnut resources. However, yields are far behind other fruit trees. After investigation, the main reason for the low yield chestnut is due to the use of real breeding. To this end, since 1978, the city started a high replacement of low-yielding trees. Its annual output has increased from over 500,000 jin to over 2.7 million jin and an advanced unit with a mass production of over 419 kg per mu has emerged. In the autumn of 1983, the national “chestnut tree high takeover” scene will be held in our city. Delegates agreed that: Chestnut students should be done well