Effects of Chemical Fertilizers Replaced by Organic Manure on Soil Fertility, Tea Yield and Quality in Machine-Picked Tea Garden

doi:10.11924/j.issn.1000-6850.casb19010059

Abstract

Abstract: [Objective] The author studied on the effects of different replacing chemical fertilizer replacing technologies with organic manure on Soil fertility, tea yield and quality in mechanically picking tea garden. [Method] Six treatments were set in this experiment: 1. Blank control (CK); 2. ConventionalSfertilization control (CF); 3. Replacing 25% nitrogenous fertilizer with organic manure (T1); 4. Replacing 25% nitrogenous fertilizer with organic manure + formula fertilizer (T2); 5. Replacing 25% nitrogenous fertilizer with organic manure + acidification improver (T3); 6. Replacing 25% nitrogenous fertilizer with organic manure + biomass charcoal (T4). [Result] Results showed that different chemical fertilizer replaced technologies with organic manure can control the acidification of tea garden soil, significantly increase soil organic matter content and soil available nutrients. Among them, 25% nitrogenous fertilizer replaced with organic manure + biomass charcoal showed the best effect on soil comprehensive nutrients. On increasing yield and quality, different technologies of chemical fertilizer replaced with organic manure significantly improved the yield and quality of the tea. Tea yield was the highest in the treatment of 25% nitrogenous fertilizer replaced with organic manure + biomass charcoal, reaching 746.28 Kg.hm^-2. On tea quality, the content of extractions, tea-polyphenols and amino acids in treatments showed in the order of T4>T3>T2>T1>CF>CK, and the content of tea-polyphenols and amino acids in T4 treatment increased by 27.0% and 31.3%.

CLC Number:

S571.1

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