施石灰和秸秆还田对双季稻田土壤钾素表观平衡的互作效应
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刘磊, 廖萍, 邵华, 刘劲松, 杨星莲, 王静, 王海媛, 张俊, 曾勇军, 黄山
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Interactive effects of liming and straw return on apparent soil potassium balance in a double rice cropping system
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LIU Lei, LIAO Ping, SHAO Hua, LIU Jin-Song, YANG Xing-Lian, WANG Jing, WANG Hai-Yuan, ZHANG Jun, ZENG Yong-Jun, HUANG Shan
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表4 施石灰(L)和秸秆还田(RS)对双季稻土壤表观钾素平衡和速效钾含量的影响(F值)
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Table 4 Effects of liming (L) and straw return (RS) on soil apparent K balance and available K concentration (F-value)
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年份 Year | 变异来源 Source of variations | 土壤钾素表观平衡 Soil apparent K balance | 土壤速效钾含量 Soil available K concentration | 早稻 Early rice | 晚稻 Late rice | 周年 Annual | 2015 | 石灰Liming (L) | 0.66 | 0.04 | 0.45 | 1.82 | | 秸秆还田Straw return (RS) | 174.32** | 1817.50** | 1214.69** | 303.21** | | 石灰×秸秆还田 L×RS | 5.10 | 0.04 | 4.93 | 1.08 | 2016 | 石灰Liming (L) | 0.00 | 8.14* | 8.68* | 0.28 | | 秸秆还田Straw return (RS) | 189.75** | 161.24** | 983.79** | 29.03** | | 石灰×秸秆还田 L×RS | 3.23 | 12.42* | 36.48** | 0.07 | 2017 | 石灰Liming (L) | 1.96 | 0.01 | 0.99 | 0.10 | | 秸秆还田Straw return (RS) | 101.37** | 180.68** | 424.19** | 271.59** | | 石灰×秸秆还田 L×RS | 11.87* | 0.84 | 3.19 | 0.05 | 2018 | 石灰Liming (L) | 0.21 | 0.05 | 0.04 | 0.01 | | 秸秆还田Straw return (RS) | 131.26** | 447.30** | 324.05** | 42.42** | | 石灰×秸秆还田 L×RS | 0.09 | 0.03 | 0.01 | 0.69 |
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