Process information
| Key Data Set Information | |
| Location | QD-SD-CN |
| Geographical representativeness description | A questionnaire survey was conducted on dairy farms in Qingdao, Shandong Province from July to August 2020. |
| Reference year | 2016 |
| Name |
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| Use advice for data set | Data users should take note of the following methodological advice: Account for the specific process of composting manure into organic fertilizer and the treatment of urine sewage in oxidation ponds when modeling the manure treatment process. Electricity and diesel oil are the main inputs in this process, which might need allocation when assessing environmental impacts. Emissions from manure storage and energy consumption for producing organic fertilizer, as well as the negligible greenhouse gas emission from the oxidation ponds, should be included in the life cycle assessment. The data set is calculated on the basis of total input and output per ton of Fat-and-Protein-Corrected Milk (FPCM) for a standard comparison across farms. |
| Technical purpose of product or process | The data set represents the process of milk production and manure treatment in a non-integrated planting and dairy cow breeding system (non-IPBS) in Shandong Province, China. Non-IPBS farms source all feed externally and sell the composted manure to fruit and vegetable growers. This process differs from integrated planting and breeding systems (IPBS) in the origin of silage maize, feeding costs, and the transportation and application of organic and liquid fertilizers to the fields. |
| Classification |
Class name
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| General comment on data set | In the process of manure treatment, the two modes of manure treatment are the same. Manure is made into organic fertilizer by compost, and urine sewage is put into the oxidation pond for harmless treatment to make liquid fertilizer. The main inputs in this process are electricity and diesel oil (Table 8). The discharge of this link includes the storage and discharge of manure and the energy consumption of organic fertilizer production. The greenhouse gas emission of urine polluted water in oxidation ponds is small [25] and can be ignored. |
| Copyright | No |
| Owner of data set | |
| Quantitative reference | |
| Reference flow(s) | |
| Functional Unit | The 1t FPCM corrected for protein and fat content was selected as the evaluation unit |
| Time representativeness | |
| Time representativeness description | From 2016, Shandong began to implement the silage corn planting subsidy policy, is one of the earliest provinces to implement the subsidy policy, the subsidy standard is 20~50 yuan /t. In 2019, Shandong Province silage corn planting area reached 14,100 hm2, accounting for 7.3% of the country. |
| Technological representativeness | |
| Technology description including background system | In the study area, there are mainly two milk production modes :IPBS and non-IPBS. In non-IPBS, the farms only have feeding links and manure treatment links, all the feed is purchased, and the manure pile fertilizer is made into organic fertilizer and sold to fruit and vegetable farmers. In IPBS, the silage corn planting process is increased in the farm, organic fertilizer and liquid fertilizer are mainly applied to the farm field, and the remaining part is sold to fruit farmers and vegetable farmers, etc. The differences between the two models are as follows :1) the sources of silage corn in the farm are different, resulting in different feed transportation distances and feed costs; 2) The use of organic fertilizer and liquid fertilizer is different, and the transportation distance is different. A total of 109 dairy farms were investigated in this study, and 83 valid questionnaires were obtained after excluding non-conforming questionnaires, among which 38 were non-IPBS and 45 were IPBS. |
| Flow diagram(s) or picture(s) | |
Modelling and validation
Administrative information
Inputs and Outputs