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一、早粳农垦二十号。系北方耐冷性品种。安徽省农业科学院于1959年引进,1961年起参加試驗,至1963年統計,据全省五个試点八次試驗,产量居首位三次,第二位四次,第四位一次,平均亩产八百一十五点一斤,比有芒早粳、北京粳、宁丰等增产11.8——30.1%,平均增产19.6%。我院自1960年至1964年連續五年試驗,产量居首值二次,第二位三次,平均亩产八百四十三点二斤,比有芒早粳、北京粳增产11.8—28%,平均增产21.6%。1965年参加大田生产,計种植五点四九宙,因栽插过稀,前期灌水较深,蘖肥延迟施用,影响分蘖和穗數,但平均亩
First, early japonica reclamation on the 20th. Department of cold tolerance in the north. Anhui Academy of Agricultural Sciences was introduced in 1959, from 1961 to participate in the experiment, to 1963 statistics, according to the province’s five pilot eight tests, the output of the first three times, the second four times, the fourth one, the average mu Producing 851 pound, yielding 11.8-30.1% more than Mansi early japonica, Beijing japonica and Ningfeng, with an average increase of 19.6%. Our hospital from 1960 to 1964 for five consecutive years of trial, the output of the first two times, the second three times, the average yield of 843.2 catties, compared with Mansamon japonica, Beijing japonica yield 11.8-28% , An average increase of 21.6%. In 1965 to participate in field production, plan planting five forty-nine universe, because of too thin planting, irrigation earlier, tillering delayed application, affecting tillering and panicle number, but the average mu