摘要
在陕西省商州市山阳县不同肥力土壤上,采用N、P二因素五水平最优设计,进行了丹参氮、磷优化配方施肥模式研究的多点田间试验。根据田间试验结果,求得不同土壤肥力水平下的N、P肥效反应方程,根据方程提出丹参不同产量水平的N、P合理配比和肥料用量。寻优结果表明,在山阳低肥力土壤目标产量10000~11500kg/hm2之间的施氮为88.17~165.7kg/hm2,施磷(P2O5)为88.18~165.7kg/hm2;中肥力土壤目标产量在11000~14000kg/hm2之间的施N量为108.5~187.4kg/hm2,施磷(P2O5)为105.1~179.5kg/hm2;高肥力土壤目标产量在20000~25000kg/hm2之间的施N量为85.4~173.1kg/hm2,施磷(P2O5)为121.95~179.01kg/hm2。合理施用N、P肥有利于提高丹参产量,但过量施肥会造成丹参减产。
It was adopted that the optimum design of N,P with 5 levels in the field experiment which was conducted in Shanyang county of Shaanxi province.The fertilizer rate of N,P for certain Salvia miltiorrhiza yields in different soil condition were obtained base on the response equations the optimum amount of N,P fertilizers in different soil fertility condition.The fertilizer amount of N,P is N 88.17~165.7 kg/hm2 and P2O5 88.18~165.7 kg/hm2 when Salvia miltiorrhiza target yield at 10 000~11 500 kg/hm2;If Salvia miltiorrhiza target yield at 11 000~14 000 kg/hm2,N rate is N 108.5~187.4 kg/hm2 and P rate is P2O5 105.1~179.5 kg/hm2;N rate is N 85.4~173.1 kg/hm2 and P rate is P2O5 121.95~179.01 kg/hm2 when Salvia miltiorrhiza target yield at 20 000~25 000 kg/hm2.N,P fertilizer promoted the Salvia miltiorrhiza yield but using excess N,P fertilizer can reduce the output of Salvia miltiorrhiza.
出处
《西北植物学报》
CAS
CSCD
2003年第8期1406-1410,共5页
Acta Botanica Boreali-Occidentalia Sinica
基金
陕西省科技攻关资助(2001K01-G15-03)
陕西天士力植物药业有限公司基金(TSL01001)
关键词
丹参
氮
磷
肥效
施肥量
Salvia miltiorrhiza
nitrogen
phosphorus
response of fertilizer
fertilization amount