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首页> 外文期刊>The Philippine Journal of Crop Science >EVALUATING THE MANY BENEFITS OF SUGARCANE TRASH FARMING SYSTEMS
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EVALUATING THE MANY BENEFITS OF SUGARCANE TRASH FARMING SYSTEMS

机译：评估甘蔗田间农作系统的许多好处

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The primary benefit of trash farming is the reduction of N fertilizer that is required to maintain high crop yields because of asymbiotic N fixation from the decomposing trash litter. Studies indicate that 50-200 kg N/ha can be fixed/year in a trash-mulched ratoon crop. Phosphorus fertilization can also be reduced; as the mulch protects the soil from drying; leading to more root proliferation in the soil surface where P levels are high Sugarcane trash farming can lead to about 50% reduction in tillage expenses through extended ratooning under a 1:3 years plant-crop:ratoon-crop cycle compared to current practice (normally 1:1 or 1:2 years). Other benefits of a trash mulch: It reduces need for inter-row cultivation by 50%; improves soil fertility; prevents soil erosion; increases water retention; and minimizes lodging of de-trashed cane crops. Not burning the trash removes the human health hazards associated with the exposure to airborne paniculate matter (fly soot and biogenic amorphous silica) hen the canefield is burned.Trash farming significantly increases the economic return of cane production hen compared -with conventional fanning methods. Although net revenue decreases by 4% in the plant crop (P 1184/ha); the net revenue increases by 28%(P 8924/ha) in the ratoon crop. This is primarily due to increased yields and 10% reduced cost of production on per ton cane (P 568/TC in conventional ratoon; P508/TC in trash-farmed ratoon).Trash farming decreases the overall energy input required perton of cane produced. Conventional cane is estimated to consume 0.52GJ in the plant crop and 0.46GJ/TC in the ratoon crop. Trash-farmed ratoon cane reduces the energy demand to 0.24 GJ/t. The 48% improvement in energy use was the result of a 20% increasein cane ratoon yield under trash fanning and a 110-kg/ha reduction in N fertilizer input per year. The 36% savings in energy per ton cane translates to about 3.24 M G] energy savings for the sugar industry; equivalent to 618;000 barrels of oil or $18.54M (P 964 M) at P 30/barrel. Ways on how to promote and optimize sugarcane trash farming are presented.
机译：垃圾耕作的主要好处是减少了氮肥，因为分解后的垃圾垫层具有非共生的固氮作用，因此减少了氮肥，以维持高作物产量。研究表明，在杂草覆盖的再生作物中，每年可以固定50-200 kg N / ha。磷肥也可以减少;因为覆盖物可以保护土壤免于干燥;与目前的做法相比，在1：3的植物-作物：栗-作物周期下，通过延长的再生时间，导致在P高的土壤表面导致更多的根系增殖，甘蔗垃圾耕作可以通过延长再生来减少耕种费用约50％（通常1：1或1：2年）。垃圾覆盖物的其他好处：将行间种植的需求减少了50％;提高土壤肥力;防止水土流失;增加保水力;并最大程度地减少了散去的甘蔗作物的倒伏。不燃烧垃圾可以消除与暴露于空气中的颗粒物（粉煤灰和生物无定形二氧化硅）相关的人体健康危害。燃烧甘蔗田与传统扇形方法相比，垃圾农业显着提高了甘蔗生产的经济收益。 。尽管植物作物的净收入下降了4％（P 1184 /公顷）;再生作物的净收入增长了28％（P 8924 /公顷）。这主要是因为每吨甘蔗单产提高了产量，生产成本降低了10％（常规再生棉为P 568 / TC;垃圾再生藤为P508 / TC）。常规藤茎估计在植物作物中消耗0.52GJ，在再生​​作物中消耗0.46GJ / TC。垃圾农场的再生藤将能源需求降低至0.24 GJ / t。能源使用量提高了48％，这是由于在垃圾焚烧下甘蔗再生率提高了20％，每年氮肥输入量减少了110公斤/公顷。每吨甘蔗节省36％的能量，这意味着制糖业可节省约324万[G]。相当于以每桶P 30的价格计算618,000桶石油或1,854万美元（P 964 M）。本文介绍了如何促进和优化甘蔗垃圾种植的方法。

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