Authors:
Quan Chen
1
;
2
;
Wenjing Zhang
1
;
2
;
Jinhui He
3
;
Jiequn Ren
1
;
2
and
Yi Yang
1
;
2
Affiliations:
1
Chongqing Three Gorges Academy of Agricultural Sciences, Wanzhou 400401, Chongqing, China
;
2
College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou 404020, Chongqing, China
;
3
Plant Protection and Fruit Tree Technology Popularization Station in Wanzhou District of Chongqing, Wanzhou 404155, Chongqing, China
Keyword(s):
Fertilization Technology, Tarrocco Blood Orange, Integrated of Water And Fertilizer.
Abstract:
To evaluate effects of integrated water and fertilizer and screen the optimal application amounts and styles of chemical fertilizers, a field experiment was conducted for 9-year-old Tarrocco blood orange on ‘Carrizo’ citrange [Poncirus trifoliata (L.) Raf.]×Citrus sinensis Osbeck] rootstock during 2019-2020. The experiment had 8 fertilization treatments. The control trees were hole fertilized one time a year by broadcast application (CK). The results showed that, within a certain range, in the same fertilizer, CF or WFs, WFCs processed larger fruit, higher yield and quality, and late-ripening than traditional fertilization or single water-soluble fertilizer. And the differences between WFCs and CK were significant(P<0.01). Analysis of comprehensive benefit showed that WFCs had an important role in improving fruit quality and economic benefit. WFC3 showed the highest price, fruit production value, economic benefits in all treatments. Economic benefits was reached at 117151.46 yuan/hm2
, increased 189.93% of CK. And the differences between WFC3 and the other treatments were significant(P<0.05). Therefore, the precise and green fertilization scheme of Tarrocco blood orange in Three Gorges Reservoir Region was water-soluble fertilizer (different ratio of N, P2O5, K2O) 3-4 times (0.67kg every tree in all) a year, including 2 times in July and August, and according to fruit size, one time (1.23kg every tree) compound fertilizer applied in time after raining in August, which showed the green and efficient benefit
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