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N〉K〉P,影响商品薯率的顺序为K〉N〉P。经计算机模拟寻优,鲜薯产量大于25.5 t.hm^-2和商品率大于75.39%的氮磷钾优化组合为N 317.10-328.35 kg.hm^-2、P2O5110.85 kg.hm^-2、K2O 293.70-331.05 kg.hm^-2。
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,N〉K 〉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 K〉N〉P.Based on the best agronomy measure for potato production of 25.5 t·hm-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 t·hm-2,P 110.85 t·hm-2 and K 293.70-331.05 t·hm-2.
出处
《福建农业学报》
CAS
2010年第3期314-318,共5页
Fujian Journal of Agricultural Sciences
基金
福建省科技计划重大专项专题(2008NZ0001)
关键词
马铃薯
氮磷钾
肥效模型
产量
商品薯率
potato
mathematic model
NPK
tuber yield
commodity-grade potato
