全生物降解地膜覆盖对旱地土壤水分状况及春小麦产量和水分利用效率的影响
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马明生, 郭贤仕, 柳燕兰
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Effects of full biodegradable film on soil water status and yield and water use efficiency of spring wheat in dryland
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Ming-Sheng MA, Xian-Shi GUO, Yan-Lan LIU
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表3 不同覆盖方式对小麦耗水量、籽粒产量及水分利用效率的影响
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Table 3 Effects of different mulching methods on evapotranspiration, yield, and water use efficiency of wheat
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年份
Year | 处理
Treatment | 播前土壤贮水量Soil water storage before sowing (mm) | 收后土壤贮水量
Soil water storage
after harvesting (mm) | 生育期降雨量
Rainfall during the growth period (mm) | 耗水量
Evapotranspiration
(mm) | 籽粒产量
Grain yield
(kg hm?2) | 水分利用效率
Water use efficiency
(kg hm?2 mm?1) | | 2015 | PM | 413.67±4.03 | 244.73±8.22 a | 205.8 | 374.74±12.20 a | 4481.53±75.95 a | 11.96±0.19 a | | BM | 413.67±4.03 | 245.90±5.41 a | 205.8 | 373.57±9.43 a | 4472.60±50.17 a | 11.98±0.22 a | | CK | 413.67±4.03 | 240.15±4.55 a | 205.8 | 379.33±8.43 a | 3655.71±85.07 b | 9.64±0.09 b | | 2016 | PM | 282.23±5.38 a | 240.09±6.67 a | 165.8 | 207.94±3.00 a | 2149.33±71.32 a | 10.34±0.40 a | | BM | 286.22±7.38 a | 238.36±4.04 a | 165.8 | 213.66±3.35 a | 1852.50±66.31 b | 8.67±0.37 b | | CK | 267.40±5.02 b | 218.32±6.77 b | 165.8 | 214.88±3.47 a | 1147.12±52.67 c | 5.34±0.17 c | | 2017 | PM | 334.87±5.93 a | 242.04±5.63 a | 142.6 | 235.43±0.86 a | 2043.13±84.99 a | 8.68±0.34 a | | BM | 343.93±6.24 a | 236.69±7.52 a | 142.6 | 240.84±6.63 a | 1952.12±49.69 a | 8.11±0.08 a | | CK | 287.74±5.81 b | 221.86±6.80 b | 142.6 | 208.49±2.18 b | 1065.61±48.42 b | 5.11±0.24 b | | 2018 | PM | 362.61±6.72 a | 347.49±6.09 a | 316.6 | 331.73±6.44 a | 3203.14±74.13 a | 9.66±0.05 a | | BM | 359.83±6.72 a | 345.46±6.33 a | 316.6 | 330.97±5.67 a | 3072.68±65.06 a | 9.28±0.16 a | | CK | 304.93±7.52 b | 319.98±6.78 b | 316.6 | 301.55±6.68 b | 1796.81±71.37 b | 5.96±0.23 b |
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