摘要
采用二次饱和D-最优设计,研究了有机肥与化肥配施对水稻土养分可持续性指数的影响,建立了数学模型,解析了各因素对水稻土养分可持续性指数的影响,提出了养分可持续性指数较高的施肥方案.
The effect of mixed application of organic and inorganic fertilizers on sustainable index of nutrient in paddy soil was studied by using saturated D-optimal design for quadratic regression,mathematical model was established.The effects of all kinds of factors on sustainable index of nutrient were analyzed and a fertilizing plan for high sustainable index of nutrient was offered.
出处
《北华大学学报（自然科学版）》
CAS
2001年第3期251-256,共6页
Journal of Beihua University（Natural Science）
基金
吉林省教委资助项目! (吉教合字 97第 72号 )
关键词
水稻土
有机肥
化肥
养分可持续性指数
Paddy soil
Organic manure
Fertilizer
Sustainable index of nutrient
