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野外观测试验于 1997年在广东省鹤山茶叶科技研究所的赤红壤坡地上进行。试验设计了人工林下地表覆盖 (A)、人工林下地表裸露 (B)、等高梯田种植茶树 (C)和等高梯田裸地对照 (CK) 4个处理 ,采用自制的径流收集器分别测定了各处理 4场降雨的径流深度、径流系数、水土流失量和侵蚀量等指标。结果表明 ,CK的平均径流深度为 3 72mm/10mm ,降水流失率为 37 2 % ,平均每 10mm降雨的土壤侵蚀量为 43 6kg·hm-2 ,年土壤侵蚀模数为 7 42t·hm-2 ;其它 3个不同植被覆盖处理的地表径流量比裸地对照降低 2 2 0 %～ 6 7 0 8% ,平均土壤侵蚀量减少43 81%～ 90 83% ;林下地表覆盖处理的保土效果最好 ,等高梯田种植茶树处理的保水效果最好。
Field observation and test in 1997 in Guangdong Heshan Tea Science and Technology Institute of red soil slopes. The experiment designed the ground cover under the artificial forest (A), the bare surface under the artificial forest (B), the tea plantation (C) in the terraced field and the bare soil CK (CK) in the terraced field. The runoff depth, runoff coefficient, soil erosion amount and erosion amount of four rains in each treatment were measured. The results showed that the mean runoff depth of CK was 372mm / 10mm, the runoff loss rate was 37.2%, the average soil erosion per 10mm rainfall was 436kg · hm-2, and the annual soil erosion modulus was 7 42t · hm-2 . The surface runoff of the other three vegetation cover treatments decreased by 220-276.8% and the average soil erosion decreased by 43 81% -90 83% compared with the bare land, and the soil conservation effect of the forest cover treatment The best, high contour terraces planting tea tree water treatment best.