摘要
【目的】获得玄参的最佳施肥方案。【方法】采用N、P、K三因素二次D-饱和最优设计方案，在陕西省镇坪县进行了玄参的N、P、K肥施用量及配比试验。【结果】求得玄参的N、P、K肥效反应数学模型，通过模拟选优，提出了玄参目标产量为8000～9000kg／hm^2时，纯N施用量为196．2138～337．0852kg／hm^2，P2O5施用量为97．92685～189．9207kg／hm^2，K2O施用量为152．7422～325．0003kg／hm^2。【结论】玄参对N肥和K肥的耐受力差，施用P肥对其产量影响较大。
[Objective] The study is to obtain the best fertilization scheme. [Method] Through the optimum design of N, P, K with 4 levels, the field experiments were conducted in Zhenping of Shaanxi province. [Result] The optimization mathematical models of N,P,K fertilization were obtained. Based on optimal mathematical models, the fertilizer rate of N,P,K for certain figwort yields in different soil conditions were obtained. The target yield was over 8 000- 9 000 kg/hm^2 , fertilizer amount of N was 196. 213 8- 337.085 2 kg/hm^2,P2O5 was 97. 926 85-189. 920 7 kg/hm^2,K2O was 152. 742 2-325. 000 3 kg/hm^2. [Conclusion] It was concluded that figwort didn＇t adapt to N and K,while P affected the output of figwor greatly.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2008年第2期170-174,共5页
Journal of Northwest A&F University(Natural Science Edition)
基金
教育部新世纪优秀人才支持计划项目(2005-2)
关键词
玄参
高产栽培
施肥技术
优化配方
Scrophularia ningpoensis
high yield cultivationl
fertilization technigues
optimizing formula
