二次正交旋转优化泽泻施肥  

Quadratic Orthogonal Rotation Combination Design on Alisma orientalis of Fertilization

作　　者：李瑶[1] 陈兴福[1] 彭世明 梁琴[1] 张俊[1] 吴春[1] 

机构地区：[1]四川农业大学农学院/农业部西南作物生理生态与耕作重点实验室,四川成都611130 [2]四川金土地中药材种植集团有限公司,四川成都611130

出　　处：《中药材》2015年第4期664-668,共5页Journal of Chinese Medicinal Materials

基　　金：四川省育种攻关项目(2011NZ0098-12-01)

摘　　要：目的：研究施用不同配比及用量的氮、磷、钾、微量元素肥料对泽泻块茎产量的影响,为泽泻的合理施肥提供理论依据。方法：采用4因素5水平二次回归正交旋转设计,通过大田试验建立了氮、磷、钾及微肥施肥量与泽泻产量的效应函数。结果：试验建立的二次回归方程R^2=0.8980,所建立的数学模型预测可靠程度较高,各因素对泽泻产量的影响大小依次为氮肥〉微肥〉钾肥〉磷肥。据频数统计优化施肥量,泽泻目标产量大于8 250 kg/hm^2,95%置信区间内泽泻最优施肥量为：氮肥241.45~283.55 kg/hm^2、磷肥81.14~208.44 kg/hm^2、钾肥95.57~239.42 kg/hm^2和微量元素锌肥14.32~16.18 kg/hm^2、硼肥18.84~19.86 kg/hm^2、钼肥0.151~0.159 kg/hm^2。结论：氮肥保证泽泻生长,钾肥促进块茎膨大,锌、硼、钼肥配施促进泽泻生长发育及对氮、磷、钾肥的吸收。适量施用氮、磷、钾肥及锌、硼、钼肥可促进泽泻产量增加,其中,增施氮肥对泽泻的增产作用最为显著。Objective： To study the effects of combined N,P,K and micronutrient fertilizers on the yield of Alisma orientalis tuber,and to optimize the fertilizer application rate. Methods： Four factors five levels quadratic orthogonal rotation combination design was used. A function was established on nitrogen,phosphor,potassium and microelement fertilizer application rate with the yield of Alisma orientalis tuber. Results： The established mathematical model was of high reliability for prediction with quadratic regression equation of R^2= 0. 8980. The order of increasing Alisma orientalis tuber yield was nitrogen micronutrient fertilizer potassium phosphor. The results of the frequency analysis showed that for the target yield over 8 250 kg / hm^2 and the confidence interval of 95%,the optimal fertilizer application rates were as follows： nitrogen of 241. 45 ~ 283. 55 kg / hm^2,phosphor of 81. 14 ~ 208. 44 kg/hm^2,potassium of 95. 57 ~239. 42 kg / hm^2,and zinc fertilizer of 14. 32 ~ 16. 18 kg/hm^2,boron fertilizer of 18. 84 ~ 19. 86 kg/hm^2,and molybdenum fertilizer of0. 151 ~ 0. 159 kg / hm^2 in micronutrient fertilizer. Conclusion： Nitrogen is related to the growth of Alisma orientalis,potassium promotes tuber bulking,micronutrient fertilizer consisted of zinc,boron and molybdenum fertilizer promotes Alisma orientalis growth and the absorption of nitrogen,phosphor and potassium. Moderate application of nitrogen,phosphorus,potassium,zinc,boron and molybdenum fertilizer can promote Alisma orientalis tuber yield. The nitrogen has the best effect.

关 键 词：泽泻 产量 二次正交旋转 最优施肥量 

分 类 号：R282.2[医药卫生—中药学]