摘要
为进一步研究影响马铃薯产量因素的作用与它们之间的关系,制定优化的栽培技术,采用正交旋转回归设计的方法,选取氮、磷、钾和密度4个因素为决策变量,以马铃薯鲜薯产量为目标函数,通过田间试验获得的数据,建立了马铃薯产量与参试因子间的数学模型。对模型进行解析的结果表明,试验因素对产量的作用大小顺序为:氮肥>磷肥>钾肥>密度;中低肥力条件下,氮肥对马铃薯增产起着重要的作用。各因素对马铃薯的产量效应,氮与磷、密度与磷呈显著的负互作,密度与氮和钾、磷与钾为极显著的正互作,氮钾之间的互作不显著。对于马铃薯冀张薯8号,在中等肥水条件下,马铃薯要想获得较高产量,应增加密度,提高氮、钾肥的施用量,并配合一定量的磷肥。
Using the orthogonal rotatary regressional design,nitrogen,phosphate,potassium and density as the decision variables,and the yield of fresh potato as the target function,the mathmatics model between the potato yield and experimental factors was established based on the data obtained from the field experiments to study the role of factors influencing the yield of potato and their mutual relationship.The results showed that the effect degree of the factors was as follows： nitrogenphosphatepotassiumdensity.Under the low and medium fertility condition,nitrogen played a key role in increasing the yield of potato.There were significant negative interactions between nitrogen and phosphate,and between planting densities and phosphate.There were significant positive interactions among planting densities,nitrogen and phosphate,and between phosphate and potassium.The effect of interaction between nitrogen and potassium to potato yield was not significant.For Jizhangshu No.8,increasing the planting densities and N and K fertilizer application,as well as applying some P fertilizer were important for obtaining high yield under medium fertilizer and water condition.
出处
《湖北农业科学》
北大核心
2011年第11期2194-2197,共4页
Hubei Agricultural Sciences
基金
公益性行业(农业)科研项目(nyhyzx07-006-2)
河北省科技项目(07220216)
张家口市科技项目(0601890711036C)
关键词
马铃薯
产量
肥效
数学模型
potato
yield
fertilizer efficiency
mathematical model
