扦插密度与氮、钾肥用量对浙薯13产量及经济效益的影响  

Effect of planting density and rates of nitrogen and potassium fertilizers on yield and economic efficiency of sweet potato(cv.Zheshu 13)

作　　者：刘伟明[1] 彦柏霖 赵益福 吴列宏[3] 

机构地区：[1]台州科技职业学院,浙江黄岩318020 [2]温岭市农业局,浙江温岭317500 [3]浙江省农业科学院作物与核技术利用研究所,浙江杭州310021

出　　处：《浙江农业学报》2007年第1期55-59,共5页Acta Agriculturae Zhejiangensis

摘　　要：选择扦插密度、尿素用量和硫酸钾用量为试验因子,采用二次饱和D-最优设计布置田间参数试验。建立了浙薯13产量和净产值回归方程,优化并提出了供试农艺因子组合方案:扦插密度3 300-3 600株/667m2;追肥尿素用量20-24 kg/667m2,基肥硫酸钾用量20-25 kg/667m2。The test used stem planting density, N fertilizer rates, and K fertilizer rates as experimental factors and arranged field experimental parameters by using quadratic sattrration D optimum design method. Regression equations of yield and net output value were respectively established. The results showed that optimum experimental factors as follows：the planting density was 3 300- 3 600 plants/667m^2; topdressing rates of urea were 20 - 24 kg/667m^2; basal manure rates of K2SO4 were 20- 25 kg/667m^2.

关 键 词：甘薯 浙薯13 扦插密度 施肥技术 二次饱和D-最优设计 

分 类 号：S531[农业科学—作物学]