【摘要】 通过对小麦 +紫花苜蓿混播当年植物群落地上生物量的测定表明 :植物在生长季节 ,各类群的地上生物量有明显差异 ,地上生物量积累最多的是小麦 ,其次是杂草 ,混播当年紫花苜蓿的地上生物量很小。小麦和杂草的地上生物量季节生长速率高峰期出现在 7月下旬 ,紫花苜蓿在 8月下旬。更多还原

【Abstract】 By measuring the above-ground biomass of the community of mixed sowing Triticum aestivum and Medicago sativa in the first year,the results show that the above-ground biomass of various vegetable is very different in the growth season-the accumulation of Triticum aestivu first,forb second,while Medicago sativa is vety minute The fastest growth rate of the above-ground biomass of Triticum aestivum and forb appears the last ten days of July,while one of Medicago stativa appears in between the last ten days of August更多还原