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- Title
养分优化管理提高我国柑橘产量和品质的整合分析.
- Authors
徐 浩; 王玉雯; 罗自威; 胡文朗; 廖文强; 陈立松; 李 延; 郭九信
- Abstract
Clarifying current situation of farmers' fertilization and yield in citrus producing areas and the effects of different fertilization measures can provide a scientific basis for improving the yield and quality of citrus in China. We retrieved 92 literatures on citrus fertilization from the CNKI and Web of Science to examine the impacts of nitro- gen (N), phosphorus (P or P2O5), and potassium (K or K2O) fertilizer dosage and partial productivity under farmers conventional fertilization and experts optimized fertilization, as well as the effects of optimized fertilization measures on citrus yield and quality by using meta-analysis approach. The average conventional application rates of N, P2O5 and K2O were 507.3, 262.2, and 369.3 kg him in citrus production in China. Compared with conventional fertilization, optimized fertilization resulted in a reduction of N and P2O5, by 14.7% and 8.3%, an increase in K2O application by 6.6%, which promoted partial productivity of N, P2O5, and K2O fertilizers by 7.8%, 18.4%, and 14.7%, correspondingly. The optimized fertilization resulted in 11.9% and 2.8% increase infruit yield and single fruit weight, while improved vitamin C content (Ve, 3.1%), total soluble solids (TSS, 5.9%) and total sugar content (TSC, 8.6%). Additionally, it also led to a reduction in titratable acid (TA, -3.4%) and total acid content (TAC, 3.6%), and consequently elevated the TSS/TA (14.0%) and TSC/TAC (9.5%). Among different optimized fertilization methods, the effect of optimized NPK + medium and/or micro clement fertilizer on citrus yield and fruit quality was the best, especially NPK decrement 25% between optimized NPK measures. The effect of conventional NPK organic fertilizer was higher than conventional NPK + medium and/or micro element fertilizer. However, different citrus varieties, including mandarins, pomelos, and oranges, showed different responses to optimized fertilization. Optimized fertilization management could synergistically improve citrus yield, fertilizer use efficiency, and fruit quality. Therefore, the strategy of integrated nutrient management! with reducing NPK fertilizer, balancing medium and/or micro nutrient fertilizer and improving soil fertility by organic fertilizer should be adopted according to local conditions in citrus producing areas of China.
- Publication
Yingyong Shengtai Xuebao, 2024, Vol 35, Issue 5, p1301
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.202405.011