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北京市于1959年开始从河南引种地黄,个别田块曾得到2000斤/亩(鲜)的产量,但大多数产量很低。1959～1964年的平均亩产量为224.6～630.7斤(鲜)。从1964年8月开始,我们对地黄品种进行多次调查,并探讨了防止减产的措施。一、北京地区栽培的地黄品种及留种方法1.品种混杂在北京通县、顺义、房山、昌平共调查了14个生产队。结果表明,36～89%是混杂劣种,农家品种仅占20%左右,有的仅占10%。只有一块田占63.6%。农家品种以金状元和新状元为主,也有个别小黑英品种植株。2.各品种的产量观察了9块地段的农家品种和杂苗的产量,结果表明,一般农家品种每株产量为0.15～0.5斤,而金状元在通县园田里出现过单株产量达0.9斤。杂苗仅0.09～0.12斤/株。前者比后者高3～4倍。在房山县
In 1959, Beijing began to introduce yellow crops from Henan, and individual plots had yielded 2,000 kg/mu (fresh), but most of the production was low. The average mu yield from 1959 to 1964 was 224.6 to 630.7 kg (fresh). Since August 1964, we have conducted several investigations on the variety of yellow earth and discussed measures to prevent the reduction of production. I. Species of Rehmannia glutinosa cultivated in the Beijing area and methods for seed retention 1. The variety was mixed in Beijing Tongxian, Shunyi, Fangshan and Changping. A total of 14 production teams were investigated. The results showed that 36-89% were miscellaneous inferior species, farmer varieties accounted for only about 20%, and some accounted for only 10%. Only one field accounted for 63.6%. The farm breeds are dominated by gold and new champions, and there are also individual blackish English varieties. 2. Yields of all varieties Observed the yields of farm varieties and hybrids in 9 plots. The results showed that the yield per plant was 0.15 to 0.5 kg for general farm varieties, and the yield of single plants per plant reached 0.9 in Jinyuan County of Tong County. jin. Hybrid seedlings only 0.09 ~ 0.12 kg / strain. The former is 3 to 4 times higher than the latter. In Fangshan County