摘要
以杂交水稻宜香1577和Ⅱ优838为材料,主要针对不同时期植株各部位氮质量分数变化规律进行研究,根据不同品种的植株所需氮量和土壤供氮能力对杂交水稻生产中的氮肥用量进行了分析.结果表明:品种间不同时期植株体内氮质量分数差异主要反映在不同部位氮质量分数的差异上.不同品种从播种到成熟的过程中,植株体内氮质量分数不断增加,说明植株一直在吸氮.杂交水稻生产所需氮肥除了靠施化肥供给外,土壤也能提供比较丰富的氮素养料,在施氮肥时必须结合土壤供氮这一因素,综合考虑肥料用量.
Hybrid rice Yixiang1577 and IIyou838 for materials,the variation law of the plant nitrogen content of different parts in different times were mainly studied.According to different species＇ nitrogen needed all life and soil＇s supplying nitrogen capacity during the production of hybrid rice,nitrogen sources and dosage content were analyzed.The results showed that the differences on nitrogen content of different varieties in different times in vivo mainly reflects the difference in nitrogen content at different parts.Nitrogen content in vivo of different species is increasing from seedlings to mature,which showed that rice plant was absorbing nitrogen fertilizer.Hybrid rice production needs application of chemical fertilizer nitrogen,the soil can also provide rich nitrogen nutrients.Fertilizer at the soil must be combined with the factors for the nitrogen fertilizer consumption considering the production of hybrid rice.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第5期125-129,共5页
Journal of Southwest China Normal University(Natural Science Edition)
基金
现代农业产业技术体系建设专项基金资助项目
