摘要
盆栽试验表明,无论单施氮还是单施磷,均可提高玉米植株的氮素吸收量,但植株氮含量仍以最适施肥比例条件下的最大施肥量为最高,此时玉米叶片的叶绿素含量和光合强度也达到最大值,说明合理的施肥比例和施肥量是影响玉米叶片叶绿素含量和光合强度高低的重要因素。
Pot experiment showed that no matter single fertilization of nitrogen or phosphorus,both of them could improve absorption of nitrogen by maize leaves.But the maximum level of plant nitrogen is still the maximum fertilization dosage in an optimum fertilization ratio.Under that situation the levels of chlorophyll and photosynthesis intensity reached the highest.It suggested that reasonable fertilization ratio and dosage were important factors affecting cholorophyll level and intensity of photosynthesis in maize leaf.
出处
《山西农业科学》
2004年第4期33-36,共4页
Journal of Shanxi Agricultural Sciences
基金
山西省科技厅科技攻关项目(951009)。
关键词
施肥比例
施肥量
玉米吸肥
影响因素
增产机理
Fertilization ratio
Fertilization dosage
Level of cholorophyll
Intensity of photosynthesis
