Effects of bio-organic fertilizer application on yield and quality of Yun angelica and the soil nutrients
In order to provide theoretical basis for high yield,high quality and rational fertilization rate of Yun angelica in Weixi County,a field experiment of proprietary medicine cultivation of Yun angelica was conducted under weedproof cloth mulching.Seven treatments were set up,i.e.no fertilization(CK1),conventional fertilization(CK2),single chemical fertilizer application(C),single bio-organic fertilizerⅠ application(BⅠ),single bio-organic fertilizerⅡ application(BⅡ),50%chemical fertilizer+bio-organic fertilizerⅠ(1/2C+BⅠ),50%chemical fertilizer+bio-organic fertilizerⅡ(1/2C+BⅡ),to explore the effects of different fertilization treatments on the yield components,yield,quality and soil fertility of Yun angelica.The results showed that:(1)Application of bio-organic fertilizer promoted an increase of main root length,root diameter,lateral root number,fresh and dry weight per plant,and significantly increased both the fresh and dry yield of Yun angelica(P＜0.05).Compared to the CK1,all treatments with bio-organic fertilizer increased the fresh and dry yield of Yun angelica by 41.50%-201.13%and 35.00%-69.42%,respectively,of which 1/2C+BⅠ treatment had the highest fresh yield and dry yield of Yun angelica,followed by the 1/2C+BⅡ treatment.(2)Application of bio-organic fertilizer increased the content of ferulic acid,volatile oil and polysaccharide,reduced the total ash content,and effectively improved the quality of Yun angelica.(3)Application of bio-organic fertilizer significantly increased the content of soil organic matter,alkaline-hydrolyzable nitrogen,available phosphorus and available potassium(P＜0.05).Compared to the CK1,all bio-organic fertilizer treatment increased the content of soil organic matter,alkali-hydrolyzable nitrogen,available phosphorus and available potassium by 11.77%-16.77%,5.64%-13.17%,15.74%-95.78%and 26.71%-140.53%,respectively.Considering the yield components,yield,quality and soil fertility of Yun angelica,the application of 1/2C+BⅠ treatment was the best with the high yield and high quality of Yun angelica in Weixi County under current experimental conditions.
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