Decomposition Rate and Nutrient Release of Corn Stalk Treated with Different Decomposition Maturing Agents

Yang Lili,Zhou Miliang,Deng Xiaohua,Tian Feng,Zhang Mingfa,Chen Zhifeng and Zhang Liming

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Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (30) : 32-37. DOI: 10.11924/j.issn.1000-6850.casb16010027

Decomposition Rate and Nutrient Release of Corn Stalk Treated with Different Decomposition Maturing Agents

  • Yang Lili1, Zhou Miliang2, Deng Xiaohua1, Tian Feng2, Zhang Mingfa2, Chen Zhifeng2, Zhang Liming2
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Abstract

Using nylon net to simulate stalk return to soil, the decomposition rate and nutrient release of organic C, N, P and K of corn stalk treated with different decomposition maturing agents were studied. The results showed that: (1) the decomposition rate of corn stalk was: fast decomposition period (first 10 days)>medium decomposition period (10-50 days)>slow decomposition period (50-100 days); after 100 days, 72.46%-76.09% of the corn stalk biomass was decomposed; the accumulated decomposition rate under decomposition maturing agent was higher than that of CK; (2) the sequence of nutrient release rate of corn stalk was: K>P>C>N, after 100 days, the average nutrient release rate of organic C, N, P and K of corn stalk was 58.66%, 57.3%, 88.68% and 94.88%, respectively; the decomposition maturing agent was beneficial to difficult destructive materials in corn stalk and could accelerate nutrient release of organic C, N and P. It was demonstrated that zymogeneous bacteria of organic waste had the best effect and could be promoted in production.

Key words

corn stalk; decomposition maturing agent; decomposition rate; nutrient release

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Yang Lili,Zhou Miliang,Deng Xiaohua,Tian Feng,Zhang Mingfa,Chen Zhifeng and Zhang Liming. Decomposition Rate and Nutrient Release of Corn Stalk Treated with Different Decomposition Maturing Agents. Chinese Agricultural Science Bulletin. 2016, 32(30): 32-37 https://doi.org/10.11924/j.issn.1000-6850.casb16010027

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