摘要
对 3个早籼稻品种 (组合 )在不同施氮水平下群体叶面积指数、功能叶面积指数、上部 3片功能叶大小和干重及叶绿素含量等性状进行了研究 .结果表明 ,施氮量对倒 2叶、倒 3叶的影响大于剑叶 ;抽穗期至乳熟期群体叶面积指数与功能叶面积指数都以施氮量为 30 0 kg/ hm2 者最高 ,抽穗后叶面积指数下降速度与品种株叶形态有关 ;结实期间 ,上部 3片叶的干物质量及叶绿素含量由大至小依次为施氮量 30 0 ,2 2 5 ,1 5 0 kg/ hm2 .
Influences of nitrogen application on the features of leaves of 3 early season indica rice were studied.The results show that: 1)Among the upper three leaves,influence of nitrogen amount on the 2nd and 3rd upmost leaves is heavier than that of the upmost leaf;2)Both of the total LAI and the functional LAI of the treatment of 300 kg/hm 2 nitrogen application are larger than that of the other two treatments before maturing.After heading,the decrease of LAI is relative to the shape of crop leaf;3)During the fruiting period the sequence of both dry matter weight and chlorophyll contents from high to low in the upper 3 leaves is treatment of 300,225,150 kg/hm 2 nitrogen application.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
2000年第4期250-252,共3页
Journal of Hunan Agricultural University(Natural Sciences)
关键词
施肥
氮肥
叶面积指数
叶绿素
早籼稻
fertilizing
nitrogenous fertilizers
leaf area indexes
chlorophyll
early indica rice
