Institute of Agricultural Resources and Environment , Jiangsu Academy of Agricultural Sciences , Nanjing 210014 , China.
Nanjing Institute of Environmental Sciences , China Ministry of Environmental Protection , Nanjing 210000 , China.
J Agric Food Chem. 2019 Oct 2;67(39):10823-10831. doi: 10.1021/acs.jafc.9b04117. Epub 2019 Sep 19.
The development of technology to improve the mineralization of organic fertilizer and to enhance crop production is essential to achieve the transition from traditional farming to eco-friendly organic farming. Nanobubble oxygation (NB) was employed for comparison with traditional pump-aerated oxygation (AW) and a control group through both soil incubation and soil column experiments. Plant-available N and P contents in the NB treatment group were higher than those in the AW and control groups. Enzymatic activities including β-1,4--acetyl-glucosaminidase, phosphatase, α-1,4-glucosidase, β-1,4-xylosidase, peroxidase, and phenol oxidase were significantly higher in both oxygation groups compared with the control. The soil microbial biomass, activity, and diversity were also significantly improved due to the oxygation treatment. Additionally, the microbial metabolic functions were shifted in both oxygation treatments compared with the control group. The final tomato yield increase from the NB treatment group was 23%, and that from the AW treatment was 17%, compared with the control.
为实现从传统农业向生态友好型有机农业的转变，开发提高有机肥矿化和提高作物产量的技术至关重要。通过土壤培养和土壤柱实验，将纳米气泡增氧（NB）与传统的泵曝气增氧（AW）和对照组进行了比较。NB 处理组中植物有效氮和磷含量均高于 AW 处理组和对照组。与对照组相比，两种曝气处理组的β-1,4--乙酰氨基葡萄糖苷酶、磷酸酶、α-1,4-葡萄糖苷酶、β-1,4-木聚糖酶、过氧化物酶和酚氧化酶的酶活性均显著提高。土壤微生物生物量、活性和多样性也因曝气处理而显著提高。此外，与对照组相比，两种曝气处理均改变了微生物的代谢功能。与对照组相比，NB 处理组的最终番茄产量增加了 23%，AW 处理组的产量增加了 17%。
