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首页> 外文期刊>Indian Journal of Soil Conservation >Bio-engineering measures for soil and water conservation under new tea (Camellia sinensis L.) plantation in Nilgiris
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Bio-engineering measures for soil and water conservation under new tea (Camellia sinensis L.) plantation in Nilgiris

机译：尼尔吉里斯新茶（Camellia sinensis L.）人工林水土保持生物工程措施

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摘要

An experiment was conducted during 2007-2009 in the farmer's field in the Nilgiris, the North-Western part of Tamil Nadu for evaluating different bio-engineering measures in conserving runoff and soil loss under new tea plantation. One year old B-6 tea clones were planted at double hedge spacing (135 cm x 75 cm x 75 cm) in two slope ranges (8-12 and 30-35%). Four different types of conservation measures viz., contour staggered trenches (CST) in the space between pairs of tea rows (walking rows), vegetative barrier (VB) of geranium in walking rows, CST and VB of geranium in alternate walking rows and CST with cover crop of beans were selected for evaluating runoff and soil loss with control. Minimum runoff of 112.2 mm in CST with cover crop of beansfollowed by CST (118 mm) was obtained in the slope range 8-12% with intermediate effect in the remaining treatments with similar trend in the slope of 30-35%. Minimum soil loss was found in the treatment under CST (4.91 ha~(-1)yr~(-1)) followed by CST with cover crop of beans (5.3 t ha~(-1)yr~(-1)) in 8-12% slope. Similar trend with about 25% more annual soil loss in treatments under 30-35% slope was observed due to higher percent of runoff (23.7%). Variation in tea canopy due to treatment effect was observed in post monsoon period with maximum (34.5%) in CST with cover crop of beans and CST (35.6%) in 8-12% and 30-35% slope, respectively showing the effect of CST in canopy development.
机译：在2007-2009年期间，对泰米尔纳德邦西北部Nilgiris的农民田间进行了一项实验，以评估在新茶园下保护径流和土壤流失的不同生物工程措施。将一岁的B-6茶克隆以两个树篱范围（8-12和30-35％）以双树篱间距（135 cm x 75 cm x 75 cm）种植。四种不同类型的保护措施，即成对的茶行（走行）之间的空间中的轮廓交错沟槽（CST），走行中的天竺葵的营养屏障（VB），交替走行中的天竺葵的CST和VB和CST选择带保护性的豆类作物，以评估其径流和土壤流失。 CST的最小径流为112.2 mm，豆类覆盖作物为CST（118 mm），坡度为8-12％，在其余处理中具有中等效果，坡度为30-35％的趋势相似。在CST（4.91 ha〜（-1）yr〜（-1））处理下，然后在CST下覆盖豆类作物（5.3 t ha〜（-1）yr〜（-1）），发现土壤损失最小。斜率8-12％。由于径流百分比较高（23.7％），在坡度为30-35％的处理中，每年的土壤流失增加了约25％，也出现了类似的趋势。季风后，由于处理效果，茶冠层发生了变化，其中CST最大值（34.5％），有盖豆的作物和CST（35.6％）的坡度分别为8-12％和30-35％，显示出冠层开发中的CST。

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