摘要
以超高产大豆品种辽豆14和普通品种辽豆11为试材,在不同磷酸二铵施用量和种植密度处理下,对其氮素积累和产量进行了比较。结果表明:施用磷酸二铵可以促进大豆茎秆、叶片、荚皮、籽粒和全株氮积累,随着种植密度的增加,植株各器官和全株氮积累量呈下降趋势。在生殖生长期,超高产品种叶柄中氮积累量均高于普通品种。随着磷酸二铵施用量和种植密度的增加,2个品种的氮最大积累速率均随之升高,超高产品种的氮最大积累速率均高于普通品种。施用磷酸二铵会不同程度的减少超高产品种生产100 kg籽粒需要吸收的氮量,在22.5×104株.hm-2种植密度下,2个品种生产100 kg籽粒需要吸收的氮量最多。超高产品种生产100 kg籽粒需要吸收的氮量均低于普通品种。随着磷酸二铵施用量和种植密度的增加,超高产品种籽粒产量均逐渐增加,在300 kg.hm-2磷酸二铵处理和22.5×104株.hm-2种植密度下表现最高,普通品种则在150 kg.hm-2磷酸二铵处理和15.0×104株.hm-2种植密度下籽粒产量最高。
The variation of matter production ability between super-high-yielding soybean cultivar and common soybean cultivar was uncertain before.The experiment was conducted as a double split-plot design with three replications.Main plots were diammonium phosphate treatments,split plots were planting density treatments and the split-split plots were cultivars.The results showed as follows：diammonium phosphate treatment could promote N accumulation in stem,leaf,pod wall,seed and the whole plant.N accumulation in every part was decreased with planting density increased.N accumulation in petiole of super-high-yielding cultivar was higher than those of common cultivar at reproductive stage.Maximum accumulation rate of nitrogen increased with diammonium phosphate level and planting density enhanced,and that of of super-high-yielding cultivar was higher than common cultivar.Diammonium phosphate treatment could decrease N accumulation of producing 100 kg seed in super-high-yielding cultivar with different degrees.The highest N accumulation of producing 100 kg seed in two cultivars was at 22.5×104 plant·hm-2 planting density.Nutrient absorption amount of super-high-yielding cultivar was less than that of common cultivar.The seed yield of super-high-yielding cultivar was increased with diammonium phosphate level and planting density enhanced,the highest one was at 300 kg·hm-2 diammonium phosphate treatment and 22.5×104 plant·hm-2 planting density.The highest seed yield of common cultivar was at 150 kg·hm-2 diammonium phosphate treatment and 15.0×104 plant·hm-2planting density.
出处
《大豆科学》
CAS
CSCD
北大核心
2011年第5期769-776,共8页
Soybean Science
基金
辽宁省自然科学基金资助项目(20102196)
沈阳市科技计划资助项目(090098)
国家自然科学基金资助项目(31071355)
关键词
大豆
超高产
磷酸二铵
种植密度
氮素
产量
Soybean
Super-high-yielding
Diammonium phosphate
Planting density
Nitrogen
Yield
