一年生春性牧草混播种群生物量动态研究

Biomass Dynamics of Annual Sorghum—Phaseolus Mixture Pastures

一年生牧草混播种群为典型的实验植物群落,在我国草地农业中具有十分重要的作用。对苏丹草分别与巴山豆、红豆混播种群的试验研究表明:混播种群生物量随种群生长发育呈直线上升;刈割对种群生物量有影响,尤其是影响种群生物量构成。

The biomass changes of annual mixture pastures of Sorghum sudanense plus Phaseolus angularis and Sorghum sudanense plus Phaseolus calcartus were examined in this study. It was observed that the biomass increased linearly with the development of the plant community and both the population biomass and its proportion in the mixture were significantly affected by the number of times of cutting.