摘要
为解决苜蓿规模化技术研发滞后于产业发展等关键性问题,采用测土配方施肥试验,结合理论优化模型和计算机模拟寻优技术,筛选出高产苜蓿的最佳土肥配比技术。结果表明:田间测产与4种模型筛选出,经济效益最佳施肥组合为:当P肥31.70kg/hm^2(Ca(H^2PO_4)_2·2H^2O为159 kg/hm^2)、K肥86.05kg/hm^2(K_2SO_4为172 kg/hm^2)、N肥73.08kg/hm^2(CO(NH^2)_2为159 kg/hm^2)时,产量为12348.66 kg/hm^2,肥料投资较低(1171.8元/hm^2),与最高肥料投资相比低386.3元/hm^2,产投比为21.08。
To solve the problem that there is lag between the technical study of alfalfa scale and the industrial development, we took the experiment in formulated fertilization, which combined the computer simulation and optimum design with the the optimization theory, to select the optimum formulated fertilization for high production of alfalfa. The result shows that the optimum formulated fertilization is 31.70kg/hm2 P fertilizer（ 159 kg/hm2 Ca （ H2PO4 ） 2 · 2H2O）, 86.05kg/hm2 K fertilizer（ 172 kg/hm2 K2SO4） and 73.08kg/hm2 N fertilizer（ 159 kg/hm2 CO（NH2） 2, the production is 2348.66 kg/hm2, while the cost of fertilizer is 1171.8 yuan/hm2 which less 386. 3 yuan/hm2 than the highest fertilizer investment, and the input - output ratio is 21.08.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2016年第9期183-189,共7页
Journal of Arid Land Resources and Environment
基金
国家公益性行业(农业)科研专项项目(201403048-5)资助
关键词
苜蓿
产量
施肥组合
经济效益
Alfalfa
yield
fertilizer composition
economic benefit
