旋耕配合秸秆颗粒还田对土壤物理特性的影响
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董建新,宋文静,丛萍,李玉义,逄焕成,郑学博,王毅,王婧,况帅,徐艳丽
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Improving Farmland Soil Physical Properties by Rotary Tillage Combined with High Amount of Granulated Straw
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DONG JianXin,SONG WenJing,CONG Ping,LI YuYi,PANG HuanCheng,ZHENG XueBo,WANG Yi,WANG Jing,KUANG Shuai,XU YanLi
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表3 2016—2018年不同处理下植烟土壤容重及容重降低比率
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Table 3 Soil bulk density and its decreases under different treatments from 2016 to 2018
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土层
Soil layer (cm) | 处理
Treatment | 2016 | 2017 | 2018 | 土壤容重
Bulk density (g·cm-3) | 土壤容重降低比率
Bulk density decrease (%) | 土壤容重
Bulk density (g·cm-3) | 土壤容重降低比率
Bulk density decrease (%) | 土壤容重
Bulk density (g·cm-3) | 土壤容重降低比率
Bulk density decrease (%) | | 0-20 | RG0 | 1.38±0.05a | — | 1.38±0.02a | — | 1.43±0.03a | — | | TG1 | 1.39±0.07a | -1.01 | 1.36±0.02a | 1.14 | 1.33±0.02bc | 6.70 | | TG2 | 1.44±0.02a | -4.19 | 1.25±0.01b | 9.78 | 1.31±0.05bc | 8.07 | | TG3 | 1.43±0.01a | -3.81 | 1.26±0.02b | 8.48 | 1.32±0.01bc | 7.87 | | RG1 | 1.34±0.02a | 2.56 | 1.23±0.01b | 11.23 | 1.31±0.01bc | 8.70 | | RG2 | 1.34±0.01a | 2.55 | 1.22±0.03b | 11.30 | 1.35±0.01b | 5.60 | | RG3 | 1.35±0.02a | 2.28 | 1.15±0.02c | 16.47 | 1.27±0.01c | 11.35 | | 20-40 | RG0 | 1.67±0.02a | — | 1.65±0.01a | — | 1.64±0.01a | — | | TG1 | 1.57±0.03c | 6.05 | 1.68±0.02a | -2.01 | 1.50±0.02d | 8.67 | | TG2 | 1.61±0.02bc | 3.44 | 1.55±0.01b | 6.11 | 1.50±0.01d | 8.29 | | TG3 | 1.58±0.01c | 5.48 | 1.51±0.01c | 8.56 | 1.48±0.01d | 9.84 | | RG1 | 1.62±0.01bc | 3.03 | 1.56±0.01b | 5.64 | 1.58±0.01b | 3.47 | | RG2 | 1.64±0.02ab | 1.80 | 1.55±0.01b | 5.90 | 1.57±0.01bc | 4.49 | | RG3 | 1.61±0.01bc | 3.59 | 1.54±0.01bc | 6.40 | 1.54±0.01c | 5.90 |
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