论文部分内容阅读
在宁夏彭阳县具有代表性的普通黑垆土,土壤质地为中壤土的水浇地上设置3因素5水平最优设计田间试验,结果获得了玉米生产的数学模型为:y=10666.2069+1071.7897χ1+252.5485χ2+74.6425χ3-499.4048χ21+99.1462χ22-67.968χ33+6.7218χ1χ2-15.0466χ1χ3-6.0357χ2χ3,对模型多目标解析,确定了农艺措施对产量的主效应和交互效应的大小,模拟计算出玉米最大施肥量的农业措施为:χ1=1.05698,χ2=-1.29454,χ3=0.48958即施纯N293.3 kg hm-2,施纯P2O560.85 kg hm-2,纯K2O为140.5 kg hm-2,产量为11087 kg hm-2,最佳施肥量的农业措施为:χ1=1.0611,χ2=-1.2921,χ3=0.2445即施纯N293.6 kg hm-2,施纯P2O561.03 kg hm-2,纯K2O为128.7 kg hm-2,产量为11084 kg hm-2,利润为12414.1元hm-2。
In the Ningxia Pengyang representative of ordinary black soil, soil texture is medium loam irrigated land set 3 factors and 5 level optimal design field experiment, the results obtained maize production mathematical model: y = 10666.2069 +1071.7897 χ1 + 252.5485χ2 + 74.6425χ3-499.4048χ21 + 99.1462χ22-67.968χ33 + 6.7218χ1χ2-15.0466χ1χ3-6.0357χ2χ3, the multi-objective analysis of the model to determine the main effect of agronomic measures on yield and the size of the interaction effect, the simulation calculated corn The agricultural measures with the maximum amount of fertilizer were χ1 = 1.05698, χ2 = -1.29454, χ3 = 0.48958, that is, pure N293.3 kg hm-2, pure P2O560.85 kg hm-2, pure K2O 140.5 kg hm- The yield was 11087 kg hm-2. The optimal agricultural practices were as follows: χ1 = 1.0611, χ2 = -1.2921, χ3 = 0.2445, N293.6 kg hm-2, P2O561.03 kg hm- Pure K2O was 128.7 kg hm-2 with a yield of 11,084 kg hm-2 and a profit of 12,414.1 yuan hm-2.