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本文进行了化肥、生活垃圾堆肥、生活垃圾复混肥对牧草鲁梅克斯的田间比较试验,结果表明生活垃圾复混肥施用于农田具有明显的改土培肥和增产效果。生活垃圾复混肥与不施肥处理比较,耕作层0-20cm土层中容重降低0.14 g cm-3,总孔隙度增加5.28%,>0.25mm的团粒结构增加5.50%,自然含水量增加71.68g kg-1,贮水量增加181.12 m3 hm-2,阳离子交换量增加7.03cmol kg-1,有机质增加1.77g kg-1,碱解氮、速效磷、速效钾分别增加20.51mg kg-1、2.95 mg kg-1、11.10mg kg-1,pH降低0.07。鲁梅克斯牧草单株鲜重、干重分别增加469.86g和150.35g鲜草和干草重分别增加65.15 t hm-2和16.27 t hm-2,增产率达30.18%。并对土壤中重金属元素Hg、Cd、Cr、Pb的富集有明显的减缓趋势。不同处理间的差异显著性经LSR检验达到显著和极显著水平。
In this paper, a field experiment was conducted on the Rumex fertilizers, domestic waste compost and municipal solid waste fertilizers. The results showed that the compound fertilizers applied to farmland had significant soil improvement, fertilization and yield enhancement effects. Compared with non-fertilizing treatment, the bulk density of 0-20cm soil layer decreased 0.14g cm-3, the total porosity increased 5.28%, the aggregate structure> 0.25mm increased 5.50% and the natural water content increased 71.68g kg-1, water storage capacity increased by 181.12 m3 hm-2, cation exchange capacity increased by 7.03cmol kg-1, organic matter increased by 1.77g kg-1, available nitrogen, available phosphorus and available potassium increased by 20.51mg kg-1,2.95mg kg-1, 11.10 mg kg-1, pH decreased 0.07. The fresh weight and dry weight per plant of Rumex increased by 469.86g and 150.35g, respectively. The fresh weight and hay weight increased by 65.15 t hm-2 and 16.27 t hm-2, respectively. The yield was 30.18%. The enrichment of Hg, Cd, Cr and Pb in soil was obviously slowed down. Significant differences between the different treatments by the LSR test to reach significant and extremely significant level.