【摘要】 以密度、氮素、磷素、钾素为参试因子,采用二次回归正交旋转组合设计,对蓖麻杂交新品种含油率综合农艺措施进行研究.结果表明,主要农艺措施对蓖麻含油率增减作用的大小依次为:氮素>钾素>磷素>密度.在相同或相似条件下蓖麻含油率大于50.63%的最佳实施方案为:种植密度以22302~24498株/hm2为适宜,氮素(纯N)122.76~147.96kg/hm2,磷素(P2O5)171.97~196.42kg/hm2,钾素(K2O)158.62~182.77kg/hm2为佳.更多还原

【Abstract】 With the participant factors of density, nitrogen, phosphorus, potassium, the combination design of orthogonal gyration was used in this experiment. And discussion the comprehensive agronomic measures with new hybrid varieties. The results showed that the major agronomic measures on the rate of increase the oil of castor: nitrogen> potassium> phosphorus > density. Under the same or similar conditions, the best implementation of the program to achieve the oil is over 50.63%: it is best to plant with the density of 22302~24498/hm2, nitrogenous fertilizer(pure N)at 122.76~147.96 kg/hm2, phosphate fertilizer(P2O5)at 171.97~196.42 kg/hm2and potash fertilizer(K2O)at 158.62~182.77 kg /hm2.更多还原