摘要
采用二次通用旋转组合设计,经多点田间试验研究及生产示范,建立了黄芪产量效益与N、P、K施用量的数学模型。根据模型用电子计算机模拟寻优,得到每公顷产量大于14 000 kg,纯收益大于15 000元的技术方案41套。该方案的95%置信域为施氮254.4～330.7 kg/hm2,P2O5173.2～224.9 kg/hm2,K2O101.8～133.3 kg/hm2。N、P、K的配比为1∶0.68∶0.4。
By applying quadratic general rotary combination design and using multispot field trials of fertilization and cultivation demonstration of Astragalus membranaceus ,the mathematic model was established, of yield benefit of Astragalus membranaceus and applied amount of N,P,K fertilizers. Through computer simulative selection based on the mathematic model 41 sets of technical schemes were obtained, of yield per hectare 〉 14 000 kg and net income 〉15 000 yuan. The 95% believing range of the scheme were as follows： applying fertilizer of N 254.4-330.7 kg/hm2,P2O5 173.2-224.9 kg/hm^2,K2O 101.8-133.3 kg/hm^2. And the ratio of N,P,K was 1：0.68：0.4.
出处
《甘肃林业科技》
2007年第3期21-25,共5页
Journal of Gansu Forestry Science and Technology
关键词
黄芪
施肥
数学模型
A stragalus membranaceus
fertilization
mathematic model
quadratic general rotary combination design
