摘要
为了建立赤峰地区滴灌玉米施肥技术体系,指导农业生产,按照"3414"回归最优设计方法实施玉米随机区组肥料试验,研究配方施肥对玉米产量的影响。结果表明,在通过拟合玉米产量与施肥量之间的三元二次和一元二次函数方程,进行综合决策分析,得出在本试验土壤类型和气候条件下,滴灌玉米最高产量施肥量为N369.53kg/hm2、P2O578.52kg/hm2、K2O 49.50kg/hm2,最高产量是11 824.61kg/hm2;最佳经济效益施肥量为N 342.02kg/hm2、P2O575.13kg/hm2、K2O 47.53kg/hm2,最佳产量是11 787.99kg/hm2,最佳N、P2O5、K2O比例为1∶0.22∶0.14。通过试验得出的最佳施肥量即为适合赤峰地区滴灌玉米生态系统的推荐施肥量,也即是滴灌玉米优化推荐施肥量。
In order to establish fertilization technology system of corn yield with drip irrigation in Chifeng, and guide agricultural production, field experiment with random block plots was carried out to study the effect of formula- ted fertilization on yield of maize according to the theory of ＂3414＂ regression optimum design. The results showed that, the regressive math model was set up based on the corn yield by quadratic regression analysis and linear plus plateau model. By comprehensive analysis, in this test soil types and climatic conditions, the maximum yield application rate of corn yield with drip irrigation was N 369.53kg/hm2, P205 78.52kg/hm2, K20 49.50kg/hm2 ,the economic benefit of maximum yield was 11 824.61kg/hm2 ; optimum rate of application was N 342.02kg/hm2,P2O5 75.13 kg/hm2, K2O 47.53 kg/hm2, optimum yield was 11 787.99kg/hm：, optimum proportion of NPK was 1 ： 0.22： 0.14. Obtained the optimum rate of application was the recommended amount of fertilizer application for ecosystem of corn yield with drip irrigation of Chifeng area by testing, that was optimization recommended amount of fertilizer application of corn yield with drip irrigation.
出处
《作物杂志》
CAS
CSCD
北大核心
2013年第6期99-103,共5页
Crops
基金
国家公益性行业(农业)科研专项(201203012-4-2)
国家玉米产业技术体系项目(CARS-02-31)
关键词
玉米
滴灌
肥料效应
产量
Maize
Drip irrigation
Fertilizer effect
Yield
