长期少免耕与氮肥减量对全膜双垄沟播玉米产量及碳排放的调控作用
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周永杰,谢军红,李玲玲,王林林,罗珠珠,王进斌
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Effects of Long-Term Reduce/Zero Tillage and Nitrogen Fertilizer Reducing on Maize Yield and Soil Carbon Emission Under Fully Plastic Mulched Ridge-Furrow Planting System
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ZHOU YongJie,XIE JunHong,LI LingLing,WANG LinLin,LUO ZhuZhu,WANG JinBin
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表3 耕作方式及施氮水平对0—30 cm土层有机碳含量的影响
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Table 3 Effects of different tillage practices and nitrogen levels on soil (0-30 cm) organic carbon content (g·kg-1)
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处理
Treatment | 土层 Soil layer | 平均
Mean | | 0-5 cm | 5-10 cm | 10-30 cm | | T1 | 9.07b | 9.50a | 8.71a | 8.90a | | T2 | 9.23b | 8.57a | 8.57a | 8.68a | | T3 | 9.03b | 9.19a | 7.82a | 8.25a | | T4 | 10.09a | 8.69a | 8.30a | 8.66a | | N1 | 9.57a | 9.29a | 8.32a | 8.69a | | N2 | 9.14a | 8.69a | 8.38a | 8.56a | | T1N1 | 9.37b | 10.28a | 8.60ab | 9.00a | | T1N2 | 8.78b | 8.73ab | 8.82ab | 8.80a | | T2N1 | 9.00b | 8.55b | 8.19ab | 8.38a | | T2N2 | 9.46b | 8.60b | 8.96a | 8.98a | | T3N1 | 9.19b | 9.19ab | 8.23ab | 8.55a | | T3N2 | 8.87b | 9.19ab | 7.41b | 7.95a | | T4N1 | 10.73a | 9.14ab | 8.28ab | 8.83a | | T4N2 | 9.46b | 8.23b | 8.32ab | 8.50a | | T | * | ns | * | ns | | N | ns | ns | ns | ns | | N×T | * | * | * | ns |
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