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通过径流小区试验,进行了苎麻与花生水土保持效果的对比试验,重点分析降雨量、作物覆盖度、叶面积指数等农艺性状及冠层截留量与地表径流量的关系。试验从4月份作物种植后开始测定,7月底作物收获结束。结果表明,无论是地表拦蓄径流量,还是泥沙侵蚀量,苎麻处理都优于花生处理;与花生处理相比,苎麻处理的冠层截留量提高了22.9%~908.3%(p<0.01),土壤入渗率增加了16.2%~157.7%;红壤坡耕地径流量与降雨量呈显著正相关,与覆盖度和叶面积指数呈显著对数或指数负相关。
Through runoff plots experiments, the comparative experiments of soil and water conservation between ramie and peanut were carried out, and the relationships among agronomic characters such as rainfall, crop coverage and leaf area index, and interception of canopy and surface runoff were analyzed emphatically. The test was started after the crop was planted in April and the harvest was completed by the end of July. The results showed that ramie treatment was superior to peanut treatment both in terms of surface runoff holding capacity and sediment erosion volume. Compared with peanut treatment, canopy interception of ramie increased by 22.9% -908.3% (p <0.01) The soil infiltration rate increased by 16.2% -157.7%. The red soil runoff had a significant positive correlation with rainfall, and had a significant logarithm or exponential negative correlation with the coverage and leaf area index.