自1951年,M系和MM系砧木先后从英国东茂林试验站引入我国后,各地都进行了广泛的研究,对其适应性、嫁接品种早实性及产量品质等方面都有过报导,但至今国内尚未见从产量效率这一丰产指标角度来评价,为此我用十一年的时间以M系和MM系做中间砧,对其嫁接品种国光的树体大小产量进行了调查,现报道如下: Since 1951, M series and MM series rootstocks have been introduced into our country from East Maolin Experimental Station in the UK. After extensive research has been carried out in all parts of the country, its adaptability, early solidity of grafted varieties and yield and quality have been reported. However, up to now, it has not yet been evaluated in terms of the yield index of high yield. For this reason, I spent an eleven years doing the intermediate anvil with M series and MM series, Reported as follows: