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机构地区:[1]庐江县土肥站 [2]庐江县农业局 [3]庐江县同大乡农技站
出 处:《安徽农业科学》1998年第3期217-218,共2页Journal of Anhui Agricultural Sciences
摘 要:通过二次回归旋转设计和相关、回归分析,研究了秦油二号在双晚茬口育苗移栽情况下,密度、施氮量、施磷量等主要农艺措施与其越冬苗情和经济性状的关系,依据秦油二号栽培措施效应数学模型,运用频率分析法寻优,得出≥3000kg/hm2产量水平的栽培措施方案为,密度10.83~14.91万株/hm2,施N量308.0~344.4kg/hm2,施P2O5量160.4~190.0kg/hm2。Through the quadratic regress rotational design and relationship analysis,regression analysis,the relationship among the plant density,the nitrogenous fertilizer,the phosphate fertilizer and the quality of rape seedling during the period of winter and major economic characters for hybrid rape Qinyou No.2 planted after double late rice was studied. The scheme of agricultural measures for yield level over 3 000kg/hm 2 were as following:density,108 300~149 100 plant/hm 2;N,308.0~344.4kg/hm 2and P 2O 5,160.4~190.0kg/hm 2;according to the mathematical model of the effect of agricultural measures and through frequency analysis optimized.
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