Xu J, Lin X, Qi F, Jing Y, Li Q, Zhao R, Cai R, Zhao Y, Wei G, Qiao H, Ma Z
Dryland Farming Research and Extension Center of Dingxi District in Gansu, 743000.
Zhong Yao Cai. 1998 Feb;21(2):55-60.
Using two-time general rotation-constitution design, the math-mdele has been founded about Angelica sinensis prodution efficiency and quantity of nitrogen, phosphorus and potassium to use by doing experiments in many different spots and production demonstration for testing and verifying. Accordin to the modle, computer is used to simulate the better, through which people can get fresh Chinese angelica over 500 Kg per mu and also net income over 500 yuan per mu. It shows that this is the best combination. 95% density riliability for this plan is 6860-7600 plants, pure nitrogen 18.75-22.2 Kg, P2O5 9.1-11.1 Kg and K2O 4.46-5.37 Kg One mu. Proportion for nitrogen, phosphorus, potassium is 1:0.49:0.24.
采用二次通用旋转组合设计，通过多点试验和生产示范验证，建立了当归产量与氮、磷、钾用量的数学模型。根据该模型，利用计算机进行模拟寻优，可实现亩产鲜当归500公斤以上，亩纯收入500元以上，表明这是最佳组合方案。该方案95%置信度的密度为6860 - 7600株/亩，纯氮18.75 - 22.2公斤/亩，五氧化二磷9.1 - 11.1公斤/亩，氧化钾4.46 - 5.37公斤/亩，氮、磷、钾比例为1:0.49:0.24。
