论文部分内容阅读
根据上海市农业产业结构调整过程中对土质的要求 ,本文从资源化利用上海市城市生活垃圾的角度出发 ,将自然堆置多年的垃圾堆肥应用于土壤改良 .由于垃圾堆肥质地粗松 ,含有较高的营养成分 ,同时考虑到水稻土对垃圾堆肥的承纳量 ,本实验设计了 0、7.5、15、2 2 .5kgm-2 4个垃圾堆肥施用剂量 ,经过一个完整的生长季节后采集土壤样品进行理化分析 .结果表明 ,相较对照小区 (0kgm-2 ) ,施用垃圾堆肥可以有效地改良水稻土的物理化学性状 :有机质、全N、全P、碱解N和速效P的含量分别提高 5 %～ 2 4 0 % ,土壤中细砂含量升高 ,粘粒含量下降 .而且这种改良的效果随着垃圾堆肥施用量的增加而增加 .在不同耕作深度上 ,以 0～ 10cm土层的效果最佳 ,10～ 2 0cm次之 ,2 0～ 4 0cm最低 .本实验结果表明 ,垃圾堆肥不仅是上海市水田旱作土壤的有效改良添加剂 ,而且是解决城市生活垃圾出路的一条有效途径 .表 2参 7
According to the requirement of soil quality during the process of agricultural industrial structure adjustment in Shanghai, this paper, from the perspective of resource-based utilization of municipal solid waste in Shanghai, applied the natural composting of garbage for many years to soil improvement. High nutrient content, taking into account the paddy soil to the composting capacity of trash, the experiment designed 0,7.5,15,2 2 .5kgm-2 4 composting dose of garbage, after a complete set of seasons after the harvest of soil The results showed that compared with the control plot (0kgm-2), the application of MSW could effectively improve the physicochemical properties of paddy soils: organic matter, total N, total P, alkaline N and available P were increased 5% ~ 240%, the content of fine sand in soil increased, the content of clay decreased, and the effect of this improvement increased with the increase of the amount of rubbish composting.Under the different farming depths, The best is from 10 cm to 20 cm and the lowest from 20 cm to 40 cm.The results of this experiment show that the composting of garbage is not only an effective additive to improve the dryland soil in paddy field in Shanghai, An effective way to get out of the garbage