两种微生物菌肥对山葵幼苗生长的促进效果研究

Study on the Promoting Effect of Two Microbial Fertilizers on the Growth of Eutrema Yunnanense Seedlings

为考察两种微生物菌肥(1号和2号)混合育苗基质对山葵幼苗生长的促进作用,开展了盆栽试验。试验共设5个处理,以不施用微生物菌肥为对照(CK)处理,微生物菌肥添加量分别为0.25、0.50 g/株,测定了不同处理的山葵幼苗的叶面积、叶片数、蒸腾速率、胞间CO_(2)浓度、气孔导度、光合速率等指标,并通过相关性分析探讨各指标间的相关关系,采用聚类分析探讨最优施肥量。结果表明:育苗基质中添加微生物菌肥对山葵幼苗各指标均有一定的促进作用;1号微生物菌肥的叶片数量较CK处理的增加了54.55%;2号微生物菌肥的叶面积、光合速率、蒸腾速率较CK处理的分别增大了27.43%、87.22%、16.68%;叶面积与光合速率、胞间CO_(2)浓度、蒸腾速率呈显著正相关(P<0.05);聚类分析显示,2号微生物菌肥为最优施肥品种,最佳施用量为0.25 g/株。

In order to investigate the promoting effect of two microbial fertilizers(No.1 and No.2)mixed seedling substrate on the growth of eutrema yunnanense seedlings,a pot experiment is carried out.Five treatments are set up for this experiment,with no application of microbial fertilizer as the control(CK)treatment.The added microbial fertilizer amount is 0.25 g/plant and 0.50 g/plant respectively.The leaf area,number of leaves,transpiration rate,intercellular CO_(2) concentration,stomatal conductance,photosynthetic rate and other indicators of different treatments of eutrema yunnanense seedlings are measured.The correlation between various indicators is analyzed and explored through correlation analysis and the optimal fertilization amount is explored through cluster analysis.The results show that adding microbial fertilizers to the seedling substrate has a certain promoting effect on various indicators of eutrema yunnanense seedlings.The number of leaves treated with microbial fertilizer No.1 increases by 54.55% compared to the CK treatment.The leaf area,photosynthetic rate and transpiration rate of the No.2 microbial fertilizer treatment increase by 27.43%,87.22% and 16.68% respectively compared to the CK treatment.The leaf area is significantly positively correlated with photosynthetic rate,intercellular CO_(2) concentration and transpiration rate(P<0.05).Cluster analysis shows that microbial fertilizer No.2 is the optimal fertilizer variety and the optimal application amount is 0.25 g/plant.