铜梁县玉米测土配方施肥试验及模型拟合研究  

Study on Formula Application by Soil Testing of Corn and Model Simulations in Tongliang County

作　　者：胡胜勇 王龙[2] 吴思华 韩冰[2] 田蜜[2] 李东[2] 

机构地区：[1]铜梁县农业局农技推广中心,重庆402560 [2]西南大学资源环境学院,重庆400716

出　　处：《西南师范大学学报（自然科学版）》2009年第6期134-138,共5页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：重庆市教委(编号:KJ060306);重庆市烟叶公司(06-0158)资助项目

摘　　要：采用"3414"试验方案,以玉米"海禾1号"为材料,在铜梁县钙质石骨土上进行了氮、磷、钾肥料效应及模型拟合研究.结果表明:供试土壤中有效养分含量丰缺程度为N中等级、P高等级、K极高等级,14个处理中以N2P2K2处理的产量最高,产量为5 583.0 kg/hm2;用二次回归分析,得出氮磷钾的肥料效应函数方程为:y=3 103.31+8.32N+23.64P+16.90K-0.013N2-0.10P2-0.09K2-0.011NP+0.01NK-0.16PK,玉米最高产量5 584.2 kg/hm2时,N,P2O5,K2O施用量分别为301.4,76.0,39.1 kg/hm2,肥料施用比例为7.7∶2∶1.Adopting ＂3414＂ testing program, with corn ＂Haihe number 1＂ for material, the N,P and K fertilizer effect and model simulations were discussed in Tongliang County, which based on calcareous gravelly soil. The results showed that： conditions of abundance or deficiency for available nutrient content were classified as medium （N）, high （P） and very high （K） in testing soil; the output of N2P2K2 treatment was highest in the 14 treatments. By using quadratic regression analysis, it indicated that functional equation of fertilization effect for N,P2O5 ,K2O is that y=3 103.31＋8.32N＋23.64P＋16.90K-0. 013N2 -0. 10P2 -0. 09K2-0. 011NP＋0.01NK-0.16PK, the applications of N,P2O5 ,K2O were 301.4 kg/hm^2,76. 0 kg/ hm^2,39. 1 kg/hm^2, and application ratio of fertilizer is 7.7 ： 2 ： 1, when the output of corn is up to the highest 5 584. 2 kg/hm^2.

关 键 词：玉米 3414肥效 回归模拟 铜梁县 

分 类 号：S147.2[农业科学—肥料学]