Effect of different proportion of foliar fertilizer on the growth and fruit setting of Camellia oleifera

doi:10.16178/j.issn.0528-9017.20231047

Abstract

Abstract:

Effects of different concentrations of potassium dihydrogen phosphate, urea and boric acid on the growth and fruit setting of Camellia oleifera were studied to provide theoretical support for the spraying of foliar fertilizer on Camellia oleifera. Ten-year-old common Camellia oleifera cv. Cenruan 3 were conducted as the test material, and potassium dihydrogen phosphate, urea and boric acid were set up with different concetrations and ratios of 10 experimental treatments. The changes of leaf physiology, fruit characters and fruit setting rate of Camellia oleifera were analyzed, and the effect of leaf spraying on various traits of Camellia oleifera were discussed, so as to calculate the optimal spraying amount and maximum yield. The results showed that low concentration of foliar fertilizer could significantly promote the growth, development and fruit quality of Camellia oleifera, while high concentration of foliar fertilizer could reduce the fruit quality of Camellia oleifera, which was not conducive to its growth and development. Among all treatments in this experiment, treatment 3 (potassium dihydrogen phosphate∶boric acid∶urea=0.2%∶0.2%∶0.4%) can effectively improve the leaf area, nitrogen content, phosphorus content, potassium content and fruit setting rate of Camellia oleifera, and have a positive impact on leaf oxidase activity and physiological indicators, and also have a positive role in promoting the fruit properties of Camellia oleifera. The optimum spraying rates of potassium dihydrogen phosphate, boric acid and urea were 62.62,28.74 and 58.14 g per Camellia oleifera plant, respectively, which could make the maximum yield of 23.36 kg.

Key words: Camellia oleifera, leaf fertilizer, yield, leaves, fruits, linear relationship

CLC Number:

S563.9

ZHANG Kunchang, LI Yongquan, LYU Yuzhou, WANG Chuan, WU Jinyi, WU Hongfei, CEN Yingyuan, LIAO Boyong, TU Panfeng. Effect of different proportion of foliar fertilizer on the growth and fruit setting of Camellia oleifera[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(1): 62-71.

Figures/Tables 8

References 26

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处理	氮含量/ (g·kg^-1)	磷含量/ (g·kg^-1)	钾含量/ (g·kg^-1)	叶面积/ cm²	坐果率/ %
1(CK)	10.35±0.12 f	1.60±0.03 g	3.58±0.04 e	11.74±0.25 e	52.05±0.96 e
2	11.47±0.07 b	1.80±0.03 b	3.99±0.05 ab	13.34±0.19 b	61.92±1.02 b
3	12.50±0.10 a	1.86±0.03 a	4.07±0.03 a	13.84±0.14 a	67.85±0.72 a
4	11.27±0.08 cd	1.77±0.03 bc	3.95±0.04 b	12.49±0.17 c	57.48±1.55 c
5	11.38±0.08 bc	1.74±0.02 cd	4.00±0.06 ab	13.16±0.37 b	60.07±1.26 b
6	11.01±0.10 e	1.72±0.02 de	3.77±0.03 cd	12.19±0.22 cd	55.94±1.10 cd
7	11.09±0.09 de	1.71±0.02 de	3.82±0.05 c	12.48±0.12 c	56.36±0.59 c
8	11.06±0.15 e	1.66±0.03 f	3.70±0.03 d	11.90±0.18 de	53.69±1.05 e
9	11.04±0.06 e	1.68±0.03 ef	3.69±0.03 d	12.15±0.13 cde	54.10±0.87 de
10	9.98±0.06 g	1.55±0.02 h	3.44±0.04 f	11.11±0.19 f	46.59±1.36 f

处理	氮含量/ (g·kg^-1)	磷含量/ (g·kg^-1)	钾含量/ (g·kg^-1)	叶面积/ cm²	坐果率/ %
1(CK)	10.35±0.12 f	1.60±0.03 g	3.58±0.04 e	11.74±0.25 e	52.05±0.96 e
2	11.47±0.07 b	1.80±0.03 b	3.99±0.05 ab	13.34±0.19 b	61.92±1.02 b
3	12.50±0.10 a	1.86±0.03 a	4.07±0.03 a	13.84±0.14 a	67.85±0.72 a
4	11.27±0.08 cd	1.77±0.03 bc	3.95±0.04 b	12.49±0.17 c	57.48±1.55 c
5	11.38±0.08 bc	1.74±0.02 cd	4.00±0.06 ab	13.16±0.37 b	60.07±1.26 b
6	11.01±0.10 e	1.72±0.02 de	3.77±0.03 cd	12.19±0.22 cd	55.94±1.10 cd
7	11.09±0.09 de	1.71±0.02 de	3.82±0.05 c	12.48±0.12 c	56.36±0.59 c
8	11.06±0.15 e	1.66±0.03 f	3.70±0.03 d	11.90±0.18 de	53.69±1.05 e
9	11.04±0.06 e	1.68±0.03 ef	3.69±0.03 d	12.15±0.13 cde	54.10±0.87 de
10	9.98±0.06 g	1.55±0.02 h	3.44±0.04 f	11.11±0.19 f	46.59±1.36 f