吡咯喹啉醌施用浓度和方式对辣椒生长及土壤理化性质的影响

Effects of concentration and application of pyrroliquinoline quinone on growth and soil physical and chemical properties of Capsicum

为探明吡咯喹啉醌对辣椒生长及土壤理化性质的影响,通过盆栽辣椒研究不同吡咯喹啉醌施用浓度和方式对土壤理化性质(土壤容重、土壤孔隙度、速效氮、速效磷和速效钾)、土壤微生物(真菌、细菌、放线菌及微生物总量)活性及辣椒生长(植物学性状、产质量及根系活力)的影响.结果表明:施用吡咯喹啉醌对土壤容重、土壤孔隙度、土壤真菌数量、放线菌数量、土壤速效氮含量、土壤速效钾含量及辣椒果实中的Vc含量和可溶性蛋白含量无显著性影响或无影响,但可提高土壤细菌数量和微生物总量,增加土壤中有效磷含量,促进辣椒的生长,增加辣椒果实单果重和单株重,提高辣椒根系活力,增加辣椒果实中可溶性糖含量;其中灌根处理对土壤细菌数量、微生物总量及土壤有效磷的增加优于喷施处理,而喷施处理对辣椒生长及产质量的提高优于灌根处理.在辣椒实际生产中,灌根和喷施配合施用500 nmol·L^-1吡咯喹啉醌,能改善土壤和促进辣椒生长.

To investigate the effects of pyrroloquinoline quinone on the growth of pepper and the soil,physical and chemical properties, microbial activity of the soil and the growth of pepper were measured in the potted peppers applied by different concentrations and methods of pyrroloquinoline quinone. The results showed that pyrroloquinoline quinone had no significant effect or no effect on soil bulk density, soil porosity, soil fungi,actinomycetes, soil available nitrogen, soil available potassium, Vc content and soluble protein content in pepper fruits, but could increase the number of soil bacteria and total microorganisms, soil available phosphorus content and pepper growth as the fruit weight, plant weight, the root activity and soluble sugar content of pepper fruit. The increase of soil bacteria, total microorganisms and soil available phosphorus by root irrigation was better than spraying treatment, and spraying treatment shows better effect on the improvement of pepper growth, yield and quality. It is suggested to apply pyrroloquinoline quinone combining irrigation with spraying.