荒漠绿洲农田土壤水热动态及硝态氮淋溶特征
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李晶, 何志斌, 王建兵, 马登科, 王丽莎
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Soil hydrothermal dynamics and nitrate leaching characteristics in farmland in desert oasis
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Jing Li, Zhibin He, Jianbing Wang, Dengke Ma, Lisha Wang
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表2 试验土壤基本肥力特征
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Table 2 Basic fertility characteristics of experimental soil
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| 农田类型 | 土质 | 土层深度 /cm | pH | 电导率EC /(mS·cm-1) | 有机碳SOC /(g·kg-1) | 全氮TN /(g·kg-1) | 全磷TP /(g·kg-1) | 全钾TK /(g·kg-1) |
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| 新绿洲农田 | 灌耕风沙土 | 0—20 | 8.04 | 0.11 | 4.88 | 0.62 | 0.49 | 17.79 | | 20—40 | 8.09 | 0.12 | 4.43 | 0.58 | 0.38 | 17.65 | | 40—60 | 8.76 | 0.23 | 3.70 | 0.51 | 0.44 | 17.46 | | 60—100 | 8.79 | 0.20 | 1.26 | 0.22 | 0.27 | 17.15 | | 100—140 | 8.87 | 0.19 | 0.67 | 0.17 | 0.26 | 17.12 | | 140—180 | 8.93 | 0.20 | 0.59 | 0.12 | 0.20 | 16.89 | | 老绿洲农田 | 灌耕灰棕漠土 | 0—20 | 8.15 | 0.12 | 6.54 | 0.82 | 0.95 | 34.56 | | 20—40 | 8.21 | 0.13 | 5.42 | 0.81 | 0.87 | 35.14 | | 40—60 | 9.05 | 0.13 | 4.97 | 0.73 | 0.89 | 29.68 | | 60—100 | 9.13 | 0.13 | 3.34 | 0.45 | 0.74 | 28.59 | | 100—140 | 9.10 | 0.14 | 2.94 | 0.28 | 0.69 | 22.58 | | 140—180 | 8.99 | 0.17 | 2.77 | 0.20 | 0.57 | 19.58 |
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