【摘要】 运用二因素五水平回归正交旋转组合设计试验方法,研究不同组合施氮量与密度条件对油菜产量的影响,并建立相应的数学模型。结果表明,氮肥的产量效应及其对油菜主要经济性状的影响均大于密度,所以提出在生产中应当确定合理的栽培密度,同时适当增加氮肥施用量来提高油菜产量。在试验条件下,当密度、施氮量组合为:每亩施纯氮15 71kg结合种植密度7 06千株·667m-2时油菜产量最高,可达到179 23kg·667m-2。更多还原

【Abstract】 For seeking the high-yield cultivating technique of rape,quadratic rotational regression combination design was used to study the influence of nitrogen and density on the yield of rape.At the same time,the relevant mathematical model was established.Result from the experimentation made clear that:the influence of nitrogen on the yield was higher than density.Then the suggestion has been put forward we should decide reasonable density in practice,at the same time increase the dosage of nitrogen to increase the yield of rape.The highest yield of rape in the experiment reached 179.23(kilogram·667m^-2),the most suitable density was:7.06×10³plants·667m^-2,the best amounts of nitrogen was:15.71kg.更多还原