农用酵素对有机番茄高品质生产的作用OA北大核心CSTPCD

In order to explore the role of agricultural Jiaosu(AJ)in improving the quality of organic tomato during germination and planting,germination and cultivation experiments were carried out by taking tomato variety'Pingguoqing'as experimental material.In the germination experiment,the commercial seedling(S)and farm-made(Z)substrates were used,and each substrate was treated with AJ(JS)and water(CK),respectively.The germination energy and germination rate of tomato seeds were determined;In the cultivation experiment,a split zone design was adopted.In the main zone,the amount of AJ root irrigation 250 mL+ aboveground spraying 20 mL(J1)were applied,meanwhile the control is to replace AJ with an equal amount of water(J0).In secondary zone,the amount of 15(Y1),45(Y2)and 75(Y3)t/hm2 organic fertilizer were designated.There were 6 treatments in total.The plant height,stem diameter,internode length,leaf SPAD,yield,quality and soil nutrients of tomato were measured,and the changes of soil microbial community structure under the treatment with the highest comprehensive evaluation value(D)of quality were measured.The results showed that:1)AJ improved the germination energy and germination rate of tomato seeds.The germination energy and germination rate of ZJS were 26.7％and 4.3％higher than those of ZCK,and the germination energy and germination rate of SJS were 2.3％and 2.0％higher than those of SCK,respectively.2)In the cultivation experiment,AJ promoted the healthy growth of plants and improved the yield and quality of tomato.Compared with J0,the stem diameter of tomato treated with J,increased by 6.4％-7.1％,the SPAD increased by 6.3％-7.1％.The plant internode shortened by 11.9％-21.2％,and the yield increased by 9.7％-16.9％.Under the amount of Y,and Y2 organic fertilizer,the lycopene content,vitamin C content and sugar-acid ratio of J,fruit increased by 55.7％-70.7％,7.2％-17.0％and 24.2％-33.4％,respectively.Compared with J0,and the comprehensive evaluation value of fruit quality of J1 was higher than that of J0.3)AJ improved soil nutrient status and microbial community structure.Compared with J0,the content of soil organic matter of J,increased by 24.2％-43.6％,the content of nitrate nitrogen increased by 17.3％-28.0％,and the richness of soil bacterial and fungal communities respectively decreased by 12.2％and 22.8％compared with J0.However,the fungal abundance of the phylum Ascomycota in the soil increased by 6.24％,and that of Firmicutes and Acidobacteria increased by 6.31％and 11.33％,respectively.In summary,AJ effectively enhanced the germination of tomato seeds in different substrates,improved the plant type and leaf photosynthetic capacity of tomato,and increased the contents of soil organic matter and nitrate nitrogen.At the same time,it also increased the abundance of microorganisms such as Ascomycetes and Bacillus,promoted the growth and development of plants,which makes it can be used for high-quality and high-yield cultivation of organic tomato.