文献类型：期刊文献

英文题名：Effect of C/N ratio on the composting of vineyard pruning residues

作者：Wang, Yin Quan[1];Schuchardt, Frank[2]

第一作者：王引权

通信作者：Wang, YQ[1]

机构：[1]Gansu Coll Tradit Chinese Med, Lanzhou 730000, Peoples R China;[2]Johann Heinrich Thunen Inst vTI, Fed Res Inst Rural Areas Forestry & Fisheries, Inst Agr Technol & Biosyst Engn, D-38116 Braunschweig, Germany

第一机构：甘肃中医药大学

通信机构：[1]corresponding author), Gansu Coll Tradit Chinese Med, 35 Dingxi Dong Lu, Lanzhou 730000, Peoples R China.|[10735]甘肃中医药大学;

年份：2010

卷号：60

期号：3

起止页码：131

外文期刊名：LANDBAUFORSCHUNG

收录：;Scopus(收录号：2-s2.0-77956968779);WOS:【SCI-EXPANDED(收录号:WOS:000283207300003)】；

基金：The authors would like to thank Gansu Provincial Key Scientific and Technological Project for Traditional Chinese Medicine Industry, Gansu Administration of Foreign Experts, the German Senior Expert Service (SES) and Mogao Co. Ltd., China for financial support.

语种：英文

外文关键词：vineyard pruning residues; compost; C:N ratio; maturity

摘要：We investigated the composting process of fresh, chopped vineyard pruning residues (DM 35%) at various initial C:N ratios of 60:1 (original), 52:1, 40:1, and 29:1 for 133 days in 250 litre rotting boxes with self-aeration. Urea (46 % N) was added as nitrogen supplement to attain a desirable C:N ratio. The composts were turned after 14, 23, 30, 38, 52, 65, 79, 93, 111, 122, and 133 days. The degradation of organic matter was between 19 % (at the initial C:N ratio of 60:1) and 39 % (at the initial C:N ration of 29:1) within 133 days, and the resulting C:N ratios were between 46:1 and 18:1. The compost maturity was evaluated by a self-heating test, C:N ratio, NH(4)(+)/NO(3)(+) ratio, NH(4)(+)-N content, E665, and germination index. A supplementation of about 1.5 litres water per kg fresh material was necessary to stabilize the biological activity of the composting process during the first 40 to 60 days. Nitrogen supplementation with urea, or another nitrogen source, can accelerate the rotting process, but the higher the urea supplementation, the higher the losses of nitrogen by ammonia evaporation. The optimum urea nitrogen supplementation was in the range of 2 g kg(-1) dry matter. The parameters of C:N ratio, NH(4)(+)/NO(3)(+) ratio and E665 were no clear criteria for compost maturity, because they depend on the type of material. The simple germination test could be used to determine the compost maturity in the composting of vineyard pruning residues. Based on the results, a rotting period of at least 80 days was proposed for chopped vineyard pruning residues.