摘要
以抗虫棉 33B为试验材料 ,研究了棉田施用增铵营养所引起的棉花叶片和棉田土壤中氮素营养的变化。结果显示 ,增铵营养促进了棉株对氨基态氮的吸收而抑制硝态氮的吸收 ;同时增铵营养减少了棉田土壤中残留硝态氮含量 ,维持了土壤较高的氨基态氮含量 ,提高了氮肥吸收利用效率 ,节约了氮肥资源。研究表明 ,棉田中施用增铵营养在生理和生态上具有重要的意义。
The changes of nitrogen nutrition in cotton leaf and cotton field soil were studied. The results showed that enhanced ammonia nutrition (EAN) promoted the absorption of ammonium nitrogen and restrained the absorption of nitrate nitrogen. At the same time, EAN reduced the content of rudimental nitrate nitrogen and maintained the high content of ammonium nitrogen in cotton field soil, and enhanced the efficiency of nitrogen fertilizer as well as saved nitrogen resource. The study showed that it was important to treat cotton with EAN.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2004年第2期1-4,共4页
Journal of Hebei Agricultural University
基金
河北省自然科学基金资助项目 (399119)
