摘要
为了探索安顺地区小麦丰产栽培技术模式,应用农业系统工程的原理和方法,采用二次通用旋转回归组合设计,以对小麦生长发育影响较大的可控因子———播种量和N、P、K施肥量为决策变量,产量指标为目标函数,进行田间试验,建立了小麦产量与各因素间的数学模型。经过模型分析,制定出安顺小麦5100kg/hm2以上的丰产农艺措施组合为:播种量149.10~186.60kg/hm2,施尿素346.50~450.00kg/hm2,施钙镁磷肥862.50~1240.50kg/hm2,施氯化钾297.00~447.00kg/hm2;N∶P2O5∶K2O的最优施肥比例为1.5∶1∶1.8;影响产量最主要的因素是磷肥,其次是钾肥。
For seeking the high yield cultivating technique of wheat in An shun prefecture, quadratic rotational regression combination design using the principle of agricultural system engineering was adapted to establish a mathematical model of yield of wheat, as target function, and the sowing norm and amount of N,P,K applied, as the main restrictive factors that can effect the growth of wheat. The results of analysis of optimization to the model suggested that the suitable cultivation technique for the yield more than 5100 kg/ha were sowing norm 149.10~186.1 kg/ha, amount of urea 346.50~ 450.00 kg/ha, calcium magnesium phosphate 862.50~1240.50 kg/ha, potash chloride 297.00~ 447.00 kg/ha. The best ratio of N∶P 2O 5∶K 2O was 1.5∶1∶1.8. The calcium magnesium phosphate was the most important for yield among the factors above, and then the potash next.
出处
《贵州农业科学》
CAS
1998年第2期20-23,共4页
Guizhou Agricultural Sciences
关键词
小麦
栽培
农艺措施
数学模型
wheat
high yield cultivating
cultivation technique
mathematical model