正交设计在优化杂交谷施肥量上的应用

采用三因素三水平正交设计方法,选择正交设计表L9(3)4,研究施氮量、施磷量、施钾量三因素对杂交谷生长发育的影响。结果表明,施氮量、施磷量因素对杂交谷出苗率及叶绿素含量均有极显著的影响(P0.01);施钾量因素对杂交谷出苗率有显著的影响(P0.05),对杂交谷叶绿素含量有极显著的影响(P0.01);对出苗率的影响顺序为施磷量施氮量施钾量,对叶绿素含量的影响顺序为施氮量施磷量施钾量。通过多重比较得出,利于杂交谷生长发育的三因素最佳水平组合为:施氮量300 kg/hm2、施磷量450 kg/hm2、施钾量150 kg/hm2。试验结果可为杂交谷的合理施肥及大面积推广提供理论依据。

Application of Orthogonal Design in Fertilizer Application Experiments of Hybrid Millet

An experiment based on orthogonal design of three factors and three levels with 3 rephcations was conducted through an analysis of variance.The results showed that the effects of nitrogen and phosphate level on chlorophyll content and germination rate were significant at 1％ probability level,while the effects of potassium level on chlorophyll content were significant at 1％ probability level and on germination rate were significant at 5％ probability level.For the germination rate,the order of the significance is as follows：phosphate level ＞ nitrogen level ＞ potassium level,while for the chlorophyll content,the order of the significance is as follows：nitrogen level ＞ phosphate level ＞ potassium level.It is concluded that the optimal cultivation conditions are that nitrogen level 300 kg/hm2,phosphate level 450 kg/hm2 and potassium level 150 kg/hm2.The research lays a theoretical foundation for scientific fertihzation and a large area millet hybrid spreading.