摘要
根据高产小麦氮、磷、钾养分日吸收力和强度比判断 :氮的临界期在分蘖期 ,磷和钾在小麦返青前 ,氮最大效率期在孕穗 -成熟 。
According to the evaluation of daily absorption of nitrogen, phosphorus and potassium quantity and uptaking intensity ratios winter wheat with high yield , nitrogen nutrient critical stage came in wheat tillering stage, and the same stage of phosphorus and potassium appeared ahead of wheat reviving stage; the highest efficiency of nitrogen absorption was in booting ripening stage, that of phosphorus and potassium was after wheat jointing stage.
出处
《河南职业技术师范学院学报》
2000年第2期1-4,共4页
Journal of Henan Vocation-Technical Teachers College
基金
河南省科技攻关课题! ( 971 0 3 0 3 0 5)
关键词
小麦
养分日吸收力
养分强度比
营养期
氮
磷
钾
high yield wheat, nutrient, daily absorption quantity,uptaking intensity ratio,critical stage, the highest efficiency stage
