4.7 Article

The effects of different types of mulch on soil properties and tea production and quality

Journal

JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
Volume 100, Issue 14, Pages 5292-5300

Publisher

WILEY
DOI: 10.1002/jsfa.10580

Keywords

economic benefit; mulch; root activity; soil nutrients; tea plants; Vulpia myuros

Funding

  1. National Key Research and Development Program of China [2019YFD1001601, 2016YFD0200900]
  2. Key Research and Development Project of Anhui Province [201904f06020024]
  3. Project of Modern Agro-industry Technology Research System in Tea Industry of Anhui province
  4. National Natural Science Foundation of China [31800583]
  5. Science Foundation for Anhui Province [KJ2017A126]
  6. Anhui Postdoctoral Science Foundation [2018B266]
  7. Open Fund of State Key Laboratory of Tea Plant Biology and Utilisation at Anhui Agricultural University [SKLTOF20170112]

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BACKGROUND Tea is an important economic crop in China. Mulching, a modern agricultural practice, can modify the soil microenvironment and maintain the crop yield. RESULTS To investigate the effect of different mulching modes on tea plant growth, filed experiments were conducted in a Shizipu tea plantation located in Langxi Country (Xuanchen City, Anhui Province, China). Five treatments were carried out in a randomized complete block arrangement: (i) clean tillage (control); (ii) black plastic film; (iii) weed barrier fabric; (iv) rice straw mulch; and (v) intercropping withVulpia myuros. The effects of different mulch modes on soil temperature, water moisture, soil compactness, root activity, soil enzyme activity and nutrition status on tea yield, quality and economic benefits were compared at the harvest stage. In the present study, compared with other mulch treatments, intercropping withV. myurossignificantly reduced the topsoil temperature (to an optimum temperature) and soil compactness, and increased the water holding capacity in the deep soil layer, which contributed to increased tea root activity and respiration. Furthermore, intercropping withV. myurossignificantly increased soil enzymes activity, soil organic matter, and the available nitrogen and phosphorus concentrations in the main root zone. Therefore, the stronger tea root activity accelerated nutrition uptake and increased the tea yield and quality-related components of the tea, thus resulting in a larger average net income. CONCLUSION Intercropping withV. myuroscould serve as a profitable agricultural method for tea production. (c) 2020 Society of Chemical Industry

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