| Effects of different fertilizations on yield and fruit quality of Fuji apple in different ecological regions |
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| DOI：10.7606/j.issn.1000-7601.2016.05.24 |
| Key Words: apple fertilizer application technology quality yield soil fertility integration of water and fertilizer |
| Author Name | Affiliation | | ZHAO Zuo-ping | College of Chemical and Environment Science, Shaanxi Sci-Tech University, Hanzhong, Shaanxi 723001, China
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
Qinba Mountains of Bio-Resource Collaborative Innovation Center of Southern Shaanxi Province, Hanzhong, Shaanxi 723001, China | | Duan Min | College of Chemical and Environment Science, Shaanxi Sci-Tech University, Hanzhong, Shaanxi 723001, China
Qinba Mountains of Bio-Resource Collaborative Innovation Center of Southern Shaanxi Province, Hanzhong, Shaanxi 723001, China | | TONG Yan-an | College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| In order to ascertain the similarities and differences in effects of fertigation on apple production in orchards of diffrent ecological regions, two field experiments with six treatments were selected for orchard in different ecological regions. NPK tradition, NPK fertigation, 1/2NPK fertigation, PK, NK and NP were used to explore the effects of fertigation on apple production, quality and fruit nutrient absorption. The results showed that due to the differences in ecological conditions, soil types and fertility levels of orchards in different ecological regions, the fertigation effects on apple production were obviously distinct. In the Weibei dry-land, compared to NPK (traditional fertilization), the yield by NPK fertigation treatment was 41.14 t·hm-2, increased by 7.7%, and the net income was increased by 11.3 thousand yuan per hectare. Sugar acid ratio was increased by 15.1%, the N, P and K uptakes of fruit were increased by 35.9%, 74.4% and 43.9%, respectively. However, no significant increases were noted in apple yield, fruitquality and fruit nutrient uptake under 1/2NPK (W) treatment in Weibei Dry-land. In the Guanzhong plain, compared with traditional NPK fertilization, the yield of 1/2NPK fertigation treatment was 78.5 t·hm-2, increased by 11.01%, and the net income was increased by 52.4 thousand yuan per hectare. The N, P and K uptakes of fruit were increased by 42.1%, 97.7% and 59.1%, respectively. However, NPK fertigation merely increased the yield by 2.48%, and nutrient uptake of fruit was not significantly increased. In conclusion, fertigation management significantly increased yield and fruit quality of apple orchards in different ecological regions in Shaanxi Province. However, the effectiveness of fertigation management differed apparently due to differences in ecological conditions in different regions. Therefore, the use of optimal fertilizer application rates in fertigation management was strongly recommended. The specific conditions of orchards formed the basis of optimal fertilizer application rates for high yields, fruit qualities, fertilizer use efficiencies and economic benefits. |
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