马铃薯氮磷钾优化施肥效应研究

基金项目:

福建省科技计划重大专项专题(2008NZ0001)

详细信息

Mathematic optimization model of NPK fertilization for potato, Quanyun No.3

摘要: 采用二次通用旋转组合三因素五水平设计,在闽南丘陵旱作区低肥力等级土壤条件下,通过田间试验建立马铃薯新品种"泉云3号"氮磷钾三元肥效回归方程.结果表明:影响鲜薯产量的顺序为NKP,影响商品薯率的顺序为KNP.经计算机模拟寻优,鲜薯产量大于25.5thm-2和商品率大于75.39%的氮磷钾优化组合为N317.10~328.35kghm-2、P2O5110.85kghm-2、K2O293.70~331.05kghm-2.
- 马铃薯 /
- 氮磷钾 /
- 肥效模型 /
- 产量 /
- 商品薯率
Abstract: Using the quadratic regression current rotation compose design of 3 factors and 5 levels,the quantities of nitrogen(X1),phosphorus(X2)and potassium fertilizer(X3)for producing high yield on Quan-yun No.3 potatoes with commercial value were obtained.The results showed that the fertilizations affected the fresh potato production in the order,NK P,in loess hilly and gully regions in the southern Fujian with low soil fertility levels.The impact on the rate of commodity potatoes were KNP.Based on the best agronomy measure for potato production of 25.5 thm-2 and the percentage of commodity-grade potatoes at ≥75.39 % at 95% confidence level,the optimal combination by computer simulation for N was found to be 317.10-328.35 thm-2,P 110.85 thm-2 and K 293.70-331.05 thm-2.
- potato /
- mathematic model /
- NPK /
- tuber yield /
- commodity-grade potato

徐志平,姚宝全,章明清,等.福建主要粮油作物测土配方施肥指标体系研究Ⅰ.土壤基础肥力对作物产量的贡献率及其施肥效应[J].福建农业学报,2008,23(4):396-402.