固定道保护性耕作的试验研究

通过压实试验,分析了无压实以及小型拖拉机、中型拖拉机和联合收获机压实等处理方式的土壤容重、入渗率和耕作阻力。在此基础上,进行了两年的固定道耕作试验,结果表明,机具随机进地行走会造成对土壤的严重压实,降低土壤水分入渗,增加作业能耗,而固定道能够改善土壤结构,提高土壤蓄水能力,减轻地表径流,提高土壤作业适时性和准确性,在目前固定道占地20%的情况下,总产量没有减少

Study on Controlled Traffic With Conservative Tillage

Soil bulk density,infiltration rate and tillage resistance were analyzed through compaction experiments with different treatments of non compaction, compaction with small tractor, compaction with middle tractor and compaction with combine. Results of two years controlled traffic experiments showed that, random traffic can bring severe compaction to soil, reduce infiltration, increase energy consumption, but controlled traffic can improve soil structure, increase soil moisture, reduce runoff and make field operation more timely and precise. Controlled traffic may occupy 20% land, but the yields can be kept at the same level.