purification of varieties 针对花卉品种在繁殖和栽培过程中的混杂退化现象，采用选择等方法恢复其优良种性的技术措施。
该品种系宏宇种业科研人员精心提纯繁育而成，使该品种在同类产品中产量、抗病性及口感均有较大提高。
The varieties of hongyu seed breeding and research staff carefully purification, make the breed in similar products in the yield, disease resistance and the palate has improved greatly.
开豆41号于1999年在开豆4号大豆田里发现的天然变异株，后经逐年不断株选，提纯，培育而成的大豆新品种。
Kaidou 41 was selected and purified from the new natural mutant, found in 1999 in the soybean field of Kaidou 4.
蔬菜种植中，一方面大力推广蔬菜良种繁育和提纯复壮，使当家品种蔬菜良种覆盖率达到90%以上；
Vegetable cultivation, on the one hand to promote vegetable seed breeding and purification rejuvenation, so varieties of vegetable seed headed more than 90% coverage;
应用推荐