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A Simple and Reasonable Calculation Equation of Balanced Fertilization
Shenwu Lv1; Xuemei Wang2; Gangcai Liu2
Corresponding AuthorGangcai Liu
Source PublicationAGRONOMY-BASEL

Reasonable fertilization is a primary concern for agronomy scientists and farmers.
However, there is still no satisfying calculation formula to guide farmer’s fertilizing.
Five kinds of indices were tested in more than 500 field plots successively, and more than 50 pieces of long-term and short-term fertilizer field test data acquired by others were analyzed. Quick-acting fertilizers should be applied for balanced fertilization if the soil-available nutrient content is within the normal range. Through rigorous derivation and validation by a multi-year continuous 15N tracer field test, it is obtained that, total soil exogenous N = total output N − total recovery N + soil profit or lost N; utilization efficiency of fertilizer N = (output N − exogenous N) ÷ balanced application amount of N fertilizer. Optimal balanced utilization efficiency of fertilizer N, P, K = total recovery efficiency, and soil nutrient net amount = total amount after test − total amount before test. Equation application parameters were collected from more than 50 tests, which is more applicable than collecting from a single test. When soil-available nutrient content is excessively low or excessively high, adjusting this should be based on balanced fertilization to properly increase or reduce the fertilization rate.

KeywordFertilizer Utilization Fertilizer Requirement Soil Nutrient Balance Account
Indexed BySCI
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Agricultural Bureau of Sichuan, Nanchong Gaoping District, Nanchong 637100, China
2.Key Laboratory of Mountain Hazards and Earth Surface Processes, Institute of Mountain Hazards
Recommended Citation
GB/T 7714
Shenwu Lv,Xuemei Wang,Gangcai Liu. A Simple and Reasonable Calculation Equation of Balanced Fertilization[J]. AGRONOMY-BASEL,2015,5:180-187.
APA Shenwu Lv,Xuemei Wang,&Gangcai Liu.(2015).A Simple and Reasonable Calculation Equation of Balanced Fertilization.AGRONOMY-BASEL,5,180-187.
MLA Shenwu Lv,et al."A Simple and Reasonable Calculation Equation of Balanced Fertilization".AGRONOMY-BASEL 5(2015):180-187.
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