摘要
经定期测定皇草头茬草、二茬草的叶风干物产量及叶面积指数,分析叶风干物产量与叶面积指数的关系表明,叶风干物产量与叶面积指数呈线性正相关;皇草各茬草的叶风干物日均积累最大值在叶面积指数为6左右时获得;依据叶面积指数来确定牧草适刈期有一定的合理性和可行性.
The leaves outputs and the leaf area indexes of the first stubble and the second stubble of Pennisetum sinese Roxb are determined at the regular intervals.The relationship beween the leaves output and the leaf area index are studied.The results show that there is a close positive linear relationship between the outputs of airdried leaves and the leaf area indexes of the grass; The highest outputs of the airdried leaves of every stubble are gained when the leaf area index is 6. So the authors come to a conclusion that it is feasible as well as rational to determine an optimum cutting time of herbage by leaf area index.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第2期158-160,共3页
Journal of Hunan Agricultural University(Natural Sciences)
基金
湖南农业大学留学回国人员科研基金
