豆科与禾本科牧草混播效应研究进展

Progress and Prospect on Mixture of Gramineae Herbage and Leguminosae Herbage

混播技术、种群性状、生产优势、混播方式与土壤肥力间的关系等方面是观察与认识豆科与禾本科饲草混播方式的基本内容。过去大多数研究集中在该体系的地上部及现象方面的研究,今后应加强该体系内地下部种间相互作用与土壤养分吸收利用之间的关系以及种间差异与根际过程调控等方面相关机理的研究,如禾本科与豆科牧草混播种间养分竞争能力差异的生理生态基础研究,种间竟争和促进作用的基因型差异研究,微生物群落及数量变化等方面的研究。通过这些深入研究间混播的资源吸收利用特点与混播因果关系,为禾本科与豆科牧草混播种植方式的进一步发展提供理论基础。

Aspects such as mixture seeding technology, population properties, producing advantages , mixture modes and soil fertility relations are the fundamental content of gramineae herbage and leguminosae herbage mixture modes. The great majority studies focused on the above-ground and phenomenon, in the future the studies on the mixture advantage and the relative contribution of above-and below-ground interactions to the yield, nutrient uptaking and mechanism with rhizosphere process in the mixture system should be reinforced,such as ecophysiology basic researches of interspecific differences and the processes of nutrient nutrient induced rhizosphere, genotype differences of interspecific competition and facilitation, changes of microorganism community and quantity. It is a rationale in tne mixture mode of gramineae herbage and leguminosae herbage by going deep into studying the resource absorbing characteristic and mixture causality.