氮素对棉花幼苗生长、养分分配及氮素利用效率的影响
Effects of nitrogen on cotton growth, macronutrients distribution and nitrogen use efficiency
棉花是一种重要的经济作物，其生长对氮素需求较高，但其氮素利用效率较低。本研究设置了0、0.04、0.4、1、4、8mmol•L-ICa(NO3)2共6个氮浓度，分别记为N0、N0.04、N0.4、N1、N4、N8,研究其对棉花幼苗根系和地上部形态、生物量和主要营养元素吸收及其分配、光合能力、氮吸收效率(NUpE)及氮利用效率(NUtE)的影响。结果表明：随着氮浓度的增加，棉花幼苗根系及地上部的生长、干物质质量、营养元素累积量、光合能力等均呈先增加…查看全部>>
Cotton is an important economic crop with high N requirements for its growth, but its nitrogen use efficiency is low. In this study, six N concentrations(0,0.04, 0.4, 1,4, 8 mmol•L-1Ca (NO3)2, named N0, N0.04,N0.4,N1, N4, N8) were set to study their effects on root and shoot morphology, biomass and macronutrients absorption and distribution, photosynthetic capacity, N uptake(NUpE)efficiency and utilization(NUtE) efficiency ofcotton seedlings. The results sho…查看全部>>
陈丹丹;彭杰;谢晓麒;卢丽文;杜轩;孟令浩;杨国正;
cotton nitrogen concentration root morphology macronutrients distribution photosynthesis
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