摘要
本文采用农业系统工程原理和方法,研究了丘区小麦产量与密肥关系,建立了小麦产量的数学模型,运用微机模拟寻优,找出小麦亩产大于325公斤,投资效益大于12公斤/元的优化方案.对模型进行解析,找出了影响五区小麦产量较大的因子是氮基肥、不同叶龄追施氮肥和密度。
Using the principle and method of system engineering of Agriculture,the au- thor studied the relationship between yield and close fertilization in downland and estab- lished the mathematical model of wheat yield.Imitated by computer,the model showed that per mu yield of wheat was more than 325kg,the value of money invested was more than 12kg,per yuan.The main factors influencing the wheat yield in downland were initial nitrogenous dressing,the amount of nitrogenous fertilizer applied for differ- ent leaf age and close fertilization.
关键词
小麦
产量
密肥
数学模型
Wheat
Mathematical
Density and fertiker
Majorization programme
