| Effects of two organic fertilizers on photosynthetic characteristics, yield and quality of purple cabbage in Yuanmou, Yunnan Province |
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| DOI：10.7606/j.issn.1000-7601.2022.03.18 |
| Key Words: purple cabbage sheep manure organic fertilizer amino acid organic fertilizer photosynthetic characteristics yield quality |
| Author Name | Affiliation | | LI Xiaoying | College of Ecology and Environment, Southwest Forestry University, Kunming, Yunnan 650224, China | | CHEN Limei | College of Ecology and Environment, Southwest Forestry University, Kunming, Yunnan 650224, China | | LI Junlong | College of Ecology and Environment, Southwest Forestry University, Kunming, Yunnan 650224, China | | SHI Liangtao | Institute of Tropical Eco-agricultural Sciences, Yunnan Academy of Agricultural Sciences, Yuanmou, Yunnan 651300, China |
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| Abstract: |
| A field experiment with seven treatments in three application levels (5, 10, 20 t·hm-2) of sheep manure and amino acid organic fertilizer was set up to study the effects of sheep manure organic fertilizer (OF) and amino acid organic fertilizer (AAF) application rates on the growth and photosynthetic characteristics of purple cabbage in Yuanmou, Yunnan Province. The effects of two organic fertilizer and different application rates of organic fertilizer on photosynthetic characteristics of different growth periods, yield, vitamin C, reducing sugar, soluble protein and anthocyanin of purple cabbage were investigated. The results showed that the net photosynthetic rate, transpiration rate, stomatal conductance, and intercellular CO2 concentration of purple cabbage in two organic fertilizer treatments were increased compared to the control, with the greatest value in the OF20 or AAF10 treatment. The purple cabbage yield under AAF20 treatment was the highest, reaching 64.33 t·hm-2, followed by AAF10 treatment. However, the AAF10 treatment had the highest economic benefit with the yield increased by 9.99% compared with the OF5 treatment. In addition, the contents of soluble protein, vitamin C, and anthocyanin of the purple cabbage in the AAF10 treatment were 0.50%~23.28%, 2.86~36.61% and 0.24%~34.04% higher than that of other treatments respectively, but with no significant impact on reducing sugar content. In summary, the application of 10 t·hm-2 amino acid fertilizer achieved the goal of excellent quality and high yield, which can provide a basis for popularization of organic fertilizer in purple cabbage planting. |
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