摘要
在大田条件下研究了9种元素肥料对夏玉米产量、土壤有效养分含量及氮磷钾养分积累量的影响,试验结果表明:高产玉米田各肥料配施增产效果明显,增产幅度为7.0%-19.2%,施用氮肥增产12.4%,施用磷肥增产5.0%,其他元素肥料增产幅度为-1.9%~4.8%。施用氮、磷和钾肥能够显著提高土壤速效养分含量和植株养分积累量,土壤速效氮、磷、钾养分含量分别提高了13.60、6.80和20.40mg/L,植株氮磷钾养分积累量分别增加了19.18%、7.99%和13.68%。氮、磷和钾肥的当季回收率分别为12.28%、4.93%和17.56%。综合产量、土壤有效养分和养分积累等方面,氮是高产玉米的主要限制因子,其次为钾和磷。
Field experiment was conducted to study the effects of nine kinds of element fertilizers on summer maize yield, soil nutrient content, N, P and K nutrient accumulation and their efficiency. The results showed that the combined application of different element fertilizers could increase maize yield significantly, and the increase rate was 7.0% - 19.2%, nitrogen fertilizer enabled yield to increase 12.4%, phosphate fertilizer did 5.0%, and the others did - 1.9%-4.8%. Application of nitrogen, phosphorus and potassium could significantly improve the content of soil available nutrient and nutrient accumulation in plants, the available N, P, K content in the soil increased respectively by 13.60, 6.80 and 20.40 mg/L, and the N, P, K accumulation in maize plants increased by 19.18%, 7.99% and 13.68% respectively. The quarter nutrients recovery rate of nitrogen, phosphorus and potassium fertilizer was 12.28%, 4.93% and 17.56% respectively. Comprehensively considering maize yield, soil available nutrients and nutrient accumulation, nitrogen is the main limiting factor of high - yielding summer maize, followed by potassium and phosphorus.
出处
《江西农业学报》
CAS
2010年第1期23-26,共4页
Acta Agriculturae Jiangxi
基金
中国-国际植物营养研究所(IPNI)合作项目(30200108)
河南省教育厅科技攻关项目"养分资源管理与测土施肥"(30200251)
关键词
夏玉米
产量
土壤养分
限制因子
养分积累
Summer maize
Yield
Soil nutrient
Limiting factor
Nutrient accumulation