冬种紫云英与稻草还田对双季水稻产量和土壤性状的互作效应

被引:23
作者
黄山
汤军
廖萍
曾勇军
石庆华
潘晓华
机构
[1] 江西农业大学双季稻现代化生产协同创新中心/作物生理生态与遗传育种教育部重点实验室/江西省作物生理生态与遗传育种重点实验室
基金
中国博士后科学基金;
关键词
紫云英; 稻草; 双季稻; 产量; 土壤性状;
D O I
10.13836/j.jjau.2016031
中图分类号
S511.42 [];
学科分类号
摘要
通过2年田间试验,旨在明确冬种紫云英和稻草还田对双季水稻产量和土壤性状的互作效应。结果表明:稻草还田和冬种紫云英对2013年早晚稻产量均无显著影响,二者亦无显著的互作效应。稻草还田对2014年早晚稻产量无显著影响。稻草还田和冬种紫云英对2014年早稻产量的互作效应接近达到显著水平(P=0.090)。冬种紫云英显著提高了2014年早稻的产量和生物量,但是对晚稻影响不显著。冬种紫云英显著增加了2014年早稻的有效穗数和每穗粒数,对2014年晚稻有效穗数的影响接近达到显著水平(P=0.055)。试验进行2年后,冬种紫云英显著降低了土壤容重,提高了土壤总孔隙度。稻草还田显著提高了土壤pH,而冬种紫云英降低了稻草还田对土壤pH的提升效应。冬种紫云英和稻草还田对土壤有机碳、总氮和碱解氮含量均无显著影响。稻草还田显著增加了土壤速效磷和速效钾的含量,提高了土壤纤维素酶、蔗糖酶、蛋白酶和酸性磷酸酶的活性,但冬种紫云英无显著影响。冬种紫云英和稻草还田对土壤速效磷含量和纤维素酶活性具有显著的协同促进效应。
引用
收藏
页码:215 / 222
页数:8
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