Effects of different combinations of organic fertilizers and chemical fertilizers on tea yield and quality

doi:10.16178/j.issn.0528-9017.20231007

Abstract

Abstract:

Using Longjing 43 as the material, the effects of organic fertilizers of tea residue, biological organic fertilizer and silkworm excrement organic fertilizer combined with chemical fertilizer on the yield and quality of tea were studied. The results showed that the combined application of three kinds of organic fertilizers and chemical fertilizer could significantly increase the soil pH, the content of available phosphorus, available potassium and organic matter. The combined application of silkworm excrement organic fertilizer and chemical fertilizer significantly improved the soil basic physical and chemical indexes and increased yield (33.9%), compared with other treatments. The organic fertilizer of tea residue and biological organic fertilizer treatments could significantly increase the content of total chlorophyll in leaves, with an increment of 16.8% and 15.4%, in which the improvement effect on chlorophyll b content was better than that on chlorophyll a. The combined application of silkworm excrement organic fertilizer and chemical fertilizer could significantly increase the content of free amino acids in leaves by 16.5%. The combined application of biological organic fertilizer and chemical fertilizer could significantly increase the content of tea polyphenols in leaves by 25.4%. The results of this study can provide a reference for the application of organic fertilizers in the process of tea production based on yield and quality.

Key words: organic fertilizers, tea, quality

CLC Number:

S571.1

Dongxing WANG, Juanhua TAO, Qiwei SHI, Yanan WANG, Jinchuan MA. Effects of different combinations of organic fertilizers and chemical fertilizers on tea yield and quality[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(2): 296-300.

Figures/Tables 5

Table 1 Effects of different organic fertilizers application on soil basic physical and chemical indexes

处理	pH值	全氮含量/ (g·kg^-1)	碱解氮含量/ (mg·kg^-1)	速效磷含量/ (mg·kg^-1)	速效钾含量/ (mg·kg^-1)	有机质含量/ %
T1	4.3±0.17 b	5.3±0.7 a	438.1±57.6 a	244.5±17.6 b	424.0±51.3 b	8.8±1.0 a
T2	5.3±0.32 a	4.8±0.2 a	393.6±8.0 b	286.8±2.9 a	502.5±44.2 ab	7.9±0.6 a
T3	5.1±0.25 a	5.8±0.1 a	480.4±59.5 a	298.5±10.4 a	579.5±38.1 a	9.4±2.5 a
CK	3.9±0.20 c	5.4±0.1 a	442.2±12.7 a	262.7±16.9 b	300.0±35.7 c	5.3±0.2 b

Fig.1 Effects of different combinations of organic fertilizers and chemical fertilizers on tea yield

Fig.2 Effects of different combinations of organic fertilizers and chemical fertilizers on the chlorophyll content of tea

Fig.3 Effects of different combinations of organic fertilizers and chemical fertilizers on the content of free amino acids and tea polyphenols in tea

Fig.4 Effects of different combinations of organic fertilizers and chemical fertilizers on water-soluble extracts content of tea

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