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首页> 外文期刊>International journal of soil science >Responses of Some Soil Biological, Chemical and Physical Properties to Short-term Compost Amendment
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Responses of Some Soil Biological, Chemical and Physical Properties to Short-term Compost Amendment

机译：某些土壤生物学，化学和物理特性对短期堆肥修正的响应

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Compost amendment has a positive influence on soil properties and thus can serve as a soil management strategy for a sustainable crop production system. Changes in soil biological, chemical and physical properties in response to 2 separate applications of compost were estimated using 3 rates of compost (0, 10 and 20 t ha-1) on two varieties of tomato (UC82B and BESKE) in 2006 and 2007. Soil samples were taken at 6 and 12 months after the first compost application and 12 and 24 months after the second application for analysis. Results revealed that total microbial count was significantly (p≤0.05) higher after amendment but fungal count was significantly higher only at 12 months in plots amended with 20 t ha-1 than in control after the first compost application. Microbial Biomass Nitrogen (MBN) significantly increased in plots amended with 20 t ha-1 while Microbial Biomass Phosphorus (MBP) and Microbial Biomass Carbon (MBC) increased with increase in rate of amendment up to 1 year after second compost amended. Furthermore, MBP, MBC and soil organic matter were higher at 1 than 2 years after compost the second compost amendment. At 2 years after compost amendments, bulk density significantly decreased by 4.8%, aggregate stability improved by 15.7% and total porosity significantly increased by 2.9%. Also, plots amended with 20 t ha-1 compost and planted to Beske had significant reduction in bulk density and increase in hydraulic conductivity compared with those planted to UC82B. However, aggregate stability was higher in all plots with Beske. Conclusively, compost amendment led to an improvement in soil organic carbon and microbial activities which significantly improved soil physical quality particularly in plots sown to Beske variety.
机译：堆肥改良对土壤特性具有积极影响，因此可以用作可持续作物生产系统的土壤管理策略。使用两种番茄（UC82B和UC82B）的堆肥3种比率（0、10和20 t ha -1 ）估算了分别施用2次堆肥后土壤生物学，化学和物理性质的变化。 BESKE（2006年和2007年）。在第一次施用堆肥后的6和12个月以及第二次施用后的12和24个月时取样土壤样品。结果表明，在施以20 t ha -1 的土地上，改良后的总微生物数量显着提高（p≤0.05），但真菌数量仅在第12个月才显着高于对照。 。修正后的1年后，以20 t ha -1 修正的地块中微生物生物量氮（MBN）显着增加，而微生物生物量磷（MBP）和微生物生物量碳（MBC）随着修正率的增加而增加。修改了第二堆肥。此外，第二次堆肥改良后的堆肥中，MBP，MBC和土壤有机质在1年比2年时更高。堆肥改良后的2年，堆密度显着下降了4.8％，骨料稳定性提高了15.7％，总孔隙率显着提高了2.9％。另外，与UC82B相比，用20 t ha -1 堆肥改良并种植到Beske的地块，其堆密度显着降低，水力传导率明显提高。但是，在使用Beske的所有地块中，骨料稳定性更高。最终，堆肥的改良导致土壤有机碳和微生物活性的改善，从而显着改善了土壤的物理质量，特别是在Beske品种播种的田地中。

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