During the time of traditional agriculture in Guangdong, the main manuresource of mountainous areas was ash, while in the plains, the main manuresource was the river filth.
传统农业时代广东地区山区和平原分别以获取灰粪和泥肥作为主要肥源。
2
Studies were conducted on the changes of physicochemical quality of sawdust substrates using urinate as manuresource during fermentation and the effect on growth of pepper seedling.
研究了以尿素为氮源的锯末基质发酵腐熟过程中理化性质的变化以及对辣椒幼苗生长发育的影响。
3
Manure has become a minor source of nitrogen in all major agricultural countries.