雄性不育杂种油菜干物质积累与养分吸收规律研究

THE LAWS OF ACCUMULATION OF DRY MATTER AND NUTRIENT UPTAKES OF STERILE HYBRID RAPE

对雄性不育杂种油菜杂＿（３７）、杂＿（３５）与常规油菜品种Ｓ＿（７５－１）、干物质积累、养分吸收累积进行比较研究表明，供试杂交种较常规品种营养生长、生殖生长和对氮、磷、钾素吸收累积均具有优势。不同品种氮素吸收累积量与干物质及磷、钾素吸收累积量间有不同的数量相关关系。杂交种籽粒产量与常规品种籽粒产量差异达到ＬＳＲ＿（０．０１）极显著水平。

Comparsion of accumulation of dry matter and nutrient uptakes between sterile hybrid rapessuch as hybrid_(37) and_(35)and ,the traditional rape cultivar s_(75-1)was made. Results indicated that vege-tation growth, reproductive growth and uptakes and accumulation of N,P, K nutr ient elementsby hybrid rapes used in the trials were superior to those by the traditional rape. There was aquantative correlation among the uptakes and accumulation of N element and accumulation of dry matters as well as the uptakes and accumulation of P and K elements by different rape cultivars.The difference between grain yields of hybrid and traditional rape cultivars reached the extremelysignificant level,i ,e LSR_(0.01)