摘要
稻麦高产群体的主要生育特征为:在适宜叶面积基础上粒叶比高;分蘖成穗率高;有效叶面积和高效叶面积比例高;抽穗时单茎、鞘重量高;水稻结实期颖花根活量高.通过减苗、扩行、调肥和控水等技术可培育高产或超高产群体.对稻麦超高产指标体系和技术途径等进行了讨论.
The high-yielding population of rice and wheat has following characteristics: high grain-leaf ratio based on a suitable leaf area index (LAI), high percentage of productive tillers, high percentage of effective and highly effective LAI, high weight of per stem and sheath at heading, and high spikelet-root activity during grain filling period. A high-or super high-yielding population would be developed by the techniques of re ducing basic seedlings, enlarging rows, managing fertilizers and controlling water supply. The index system of and approaches to the super high-yielding rice and wheat were also discussed in the paper.
出处
《中国农业科技导报》
CAS
CSCD
2000年第3期22-25,共4页
Journal of Agricultural Science and Technology
