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Effects of Different Chinese Hickory Husk Returning Modes on Soil Nutrition and Microbial Community in Acid forest Soil

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Phyton-International Journal of Experimental Botany 2023年第3期92卷 943-954页

作者： Qian Liu Sayikal Duyxanale Yongqian Tang Xinyu Shen Yuanlai Zhao Xinru Ma Shuai Shao Chenfei Liang State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou311300China lingfeng temple forest farm Anji313300China

Chinese hickory(Carya cathayensis Sarg.)is an important economic forest in Southeastern China.A large amount of hickory husk waste is generated every year but with a low proportion of ***,intensive management has resulted in soil degradation of Chinese hickory *** study aims to investigate the effects of three Chinese hickory husk returning modes on soil amendment,including soil acidity,soil nutrition,and microbial *** field experiment carried out four treatments:control(CK),hickory husk mulching(HM),hickory husk biochar(BC),and hickory husk organic fertilizer(OF).The phospholipid fatty acid(PLFA)biomarker method was employed to determine the soil microbial *** one year of treatment,the results showed that:(i)HM and BC significantly increased soil pH by 0.33 and 1.71 units,respectively;(ii)HM,BC and OF treatments significantly increased the soil organic carbon,alkaline nitrogen,available phosphorous,and available *** OF treatment demonstrated the most significant improvement in the soil nutrient;(iii)The soil microbial biomass significantly increased in the HM,BC and OF treatments,and all microbial groups showed an increasing *** treatment increased the fungal/bacterial ratio(F/B).The OF treatment significantly decreased the Shannon-Wiener diversity(H’)and evenness index(J)of the microbial community(P<0.05).Considering the treatments effects,costs,and ease of operation,our recommended returning modes of Chinese hickory husk are mulching and organic fertilizer produced by composting with manure.

关键词： Chinese hickory husk organic fertilizer biochar mulching phospholipid fatty acids soil microbial community

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