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首页> 外文会议>International Society of Sugar Cane Technologists Congress >THE EFFECTS OF GREEN-CANE TRASH BLANKET ON SOIL TEMPERATURE, SOIL MOISTURE AND SUGARCANE GROWTH
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THE EFFECTS OF GREEN-CANE TRASH BLANKET ON SOIL TEMPERATURE, SOIL MOISTURE AND SUGARCANE GROWTH

机译：绿色甘蔗垃圾毯对土壤温度，土壤水分和甘蔗生长的影响

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GREEN cane harvesting and trash blanketing (GCTB) is being increasingly adopted in the sugarcane area of Tucuman Argentina. These practices result in lower environmental impacts, cost reduction in weed control, and an improvement in soil moisture conservation. The effects of a trash blanket on the soil temperature and soil moisture regimes were studied in a field trial by comparing burning of post-harvest residues (BC) and GCTB systems under irrigated and rainfed conditions during four growing periods. The impact on stalk population, stalk growth, number of leaves and weight of millable cane was evaluated. Soil temperature was 1.5°C higher at emergence and tillering where the residue was burned as compared to the GCTB system. After these periods, the differences were no longer significant. In all cases, the temperature remained above the 10.5°C base temperature for Tuc 77-42 growth. The trash blanket also modified the soil moisture regime, and variations in soil moisture were closely related to rainfall distribution. Periods with moisture contents above 40% of the available water in the top 45 cm were 40 days during dry springs and 80 days during humid springs for the GCTB whereas, in the burnt residue plots, they were 20 days and 50 days, respectively. Differences in the number of stalks at harvest were not obtained for the two systems; however, there were more shoots where the residue was burned at the tillering phase. Changes in the temperature and moisture regimes in the top 45 cm caused bythe trash blanket had no adverse effect on cane yield. This information can be used by the growers of Tucuman to justify the adoption of green cane trash blanketing in their farming operations.
机译：绿色甘蔗收获和垃圾覆盖（GCTB）在Tucuman阿根廷的甘蔗区越来越多地采用。这些实践导致环境影响较低，杂草控制成本降低，以及土壤水分保护的改善。通过比较在四个生长期间灌溉和雨量条件下的收获后残留物（BC）和GCTB系统的燃烧，研究了垃圾毯对土壤温度和土壤湿度制度的影响。评估对茎秆群，茎秆生长，叶片数量和可易绒手杖的重量的影响。在与GCTB系统相比，土壤温度在燃烧和分蘖下较高1.5℃。在这些时期之后，差异不再重要。在所有情况下，温度仍然高于10.5℃的基础温度，用于TUC 77-42生长。垃圾毯还改变了土壤水分制度，土壤水分的变化与降雨分布密切相关。在45厘米的40％以上的水分含量以上的水分含量为40天，在干燥弹簧期间为40天，在潮流的液体弹簧中为80天，而在烧焦的残留图中，它们分别为20天和50天。两种系统没有获得收获秸秆数量的差异;然而，在分蘖期燃烧残留物的芽率更多。由垃圾毯引起的45厘米温度和湿度制度的变化对甘蔗产量没有不利影响。该信息可以由Tucuman的种植者使用，证明在农业运营中采用绿色甘蔗垃圾覆盖。

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