周年秸秆还田对农田土壤固碳及冬小麦-夏玉米产量的影响
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李昊昱,孟兆良,庞党伟,陈金,侯永坤,崔海兴,金敏,王振林,李勇
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Effect of annual straw return model on soil carbon sequestration and crop yields in winter wheat-summer maize rotation farmland
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Hao-Yu LI,Zhao-Liang MENG,Dang-Wei PANG,Jin CHEN,Yong-Kun HOU,Hai-Xing CUI,Min JIN,Zhen-Lin WANG,Yong LI
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表7 不同秸秆还田模式对冬小麦和夏玉米产量的影响
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Table 7 Effects of straw incorporation on grain yield of winter wheat and summer maize
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处理
Treatment | 冬小麦产量
Wheat yield
(kg hm-2) | 夏玉米产量 Maize yield
(kg hm-2) | 周年产量Annual yield
(kg hm-2) | 周年增产
Yield increases of annual crop
(kg hm-2) | 小麦增产
Yield increases of wheat
(kg hm-2) | 增产比例
Ratio of yield increases
(%) | 玉米增产
Yield increases of maize
(kg hm-2) | 增产比例 Ratio of yield increases
(%) | | 2016-2017 | | NS | 8320.20 b | 9257.65 b | 17577.85 d | — | — | — | — | — | | SS | 8610.80 b | 9975.31 ab | 18586.11 c | 1008.26c | 290.60 c | 28.8 | 717.66 b | 71.2 | | WS | 9902.50 a | 9763.41 ab | 19665.91 b | 2088.06 b | 1582.30 b | 75.8 | 505.76 b | 24.2 | | DS | 10340.80 a | 10491.05 a | 20831.85 a | 3254.00 a | 2020.60 a | 62.1 | 1233.40 a | 37.9 | | 2017-2018 | | NS | 7186.20 b | 9505.57 c | 16691.77 c | — | — | — | — | — | | SS | 7303.93 ab | 9897.48 b | 17201.41 bc | 509.64 b | 117.73 b | 23.1 | 391.91 b | 76.9 | | WS | 7696.10 a | 9729.75 bc | 17425.85 b | 734.08 b | 509.90 ab | 69.5 | 224.18 b | 30.5 | | DS | 7759.90 a | 10622.24 a | 18382.14 a | 1690.37 a | 573.70 a | 33.9 | 1116.67 a | 66.1 |
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