复种条件下经济环保综合施肥方案的优化方法  

Optimization on Integrated Fertilizer Application for Economy and Environmental Protection under Multi-cropping Condition

作　　者：杨利华[1] 刘志强[1] 

机构地区：[1]河北省农林科学院粮油作物研究所,石家庄050031

出　　处：《河北农业科学》2002年第3期5-10,共6页Journal of Hebei Agricultural Sciences

摘　　要：给出了复种条件下,年全部化肥施用总量及氮肥施用总量受环保要求限制时,各茬作物综合施肥方案的优化方法。利用田间试验和统计分析取得各茬作物产量和化肥施用量间的效应函数,建立全年投入一产出效益函数。对投入一产出效益函数用Lagrange 乘子法求极值,可得到各茬作物经济环保化肥施用方案最优解。给出了当环保要求的化肥施用量不能满足生产需要时,计算有机肥增施量的两种方法。This paper illustrated a method for optimization on integrated fertiliger application in each crop when the amount of all fertilizer and N-fertilizer applied was confined by the demand of environmental protection under multi-cropping system in a year. First, set up the input-output function of annual fertilizing net income by using the effect functions between yield of each crop and amount of fertilization obtained via field experiments and statistical analysis. Whereafter, calculate the extremum of input-output income function with Lagrange multiplier method. The optimal economy and environmental protection fertilizing plan of each crop was deduced for multiple cropping under a limit of the amount of fertilizer applied in a year. Meanwhile, the paper proposed two methods to calculate amount of organic manure to be added when the amount of fertilizer applied by environment protection did not satisfy the need of production.

关 键 词：复种条件 环保 施肥方案 作物 

分 类 号：S14[农业科学—肥料学]