Institute of Germplasm Resources, Ningxia Academy of Agriculture and Forestry Sciences , Yinchuan, Ningxia, China.
Bioengineered. 2020 Dec;11(1):1258-1268. doi: 10.1080/21655979.2020.1840753.
Because of the large population, large demand, limited arable land and many environmental factors, continuous cropping have become a very common phenomenon in China. However, long-term continuous cropping has caused a series of serious soil-borne diseases, and the yield and quality of crops to drop, which seriously restricted the sustainable development of agricultural industry. Therefore, in order to improve the yield of pepper and reduce the occurrence of soil-borne diseases, it is essential to understand the effect of continuous cropping of pepper on soil microbial community composition and abundance. In this study, high throughput sequencing was used to study the effects of seven treatments of organic fertilizers and corn straw on soil microbial community and function of pepper continuous cropping. The results showed that the yield of all treatments was significantly higher than that of the control. The soil microbial diversity and community composition showed that and were the most abundant phylum in all treatments. In conclusion, there were significant differences among the seven treatments and the treatment of fowl dung with corn straw was the best fertilizer combination to improve the yield and output value of pepper. Besides, the addition of fowl dung and corn straw not only can improve the community and functions of microorganisms, but also enhance the ability of disease resistance, and ultimately decrease the soil-borne diseases. The results will help to provide scientific basis for rational application of organic fertilizer and corn straw, and overcoming continuous cropping obstacles.
由于人口众多、需求巨大、耕地有限和许多环境因素，连作在中国已成为一种非常普遍的现象。然而，长期连作导致了一系列严重的土传病害，作物的产量和质量下降，严重制约了农业产业的可持续发展。因此，为了提高辣椒的产量并减少土传病害的发生，了解辣椒连作对土壤微生物群落组成和丰度的影响至关重要。在本研究中，采用高通量测序技术研究了有机肥料和玉米秸秆的七种处理对连作辣椒土壤微生物群落和功能的影响。结果表明，所有处理的产量均明显高于对照。土壤微生物多样性和群落组成表明，在所有处理中， 和 是最丰富的门。总之，七种处理之间存在显著差异，鸡粪与玉米秸秆的处理是提高辣椒产量和产值的最佳肥料组合。此外，鸡粪和玉米秸秆的添加不仅可以改善微生物的群落和功能，还可以增强抗病能力，最终减少土传病害。研究结果将有助于为合理应用有机肥和玉米秸秆提供科学依据，克服连作障碍。
