不同覆盖材料对土壤性状及玉米前期生长的影响
为探讨不同覆盖材料对宁夏旱作区土壤性状及玉米前期生长的影响,通过覆盖白色地膜、黑色地膜、麻地膜和秸秆4种材料,以裸地为对照,分析不同覆盖材料对土壤水温、养分状况及玉米前期生长的影响。研究结果表明:玉米苗期至大喇叭口期,白色地膜和黑色地膜处理0-10cm土层土壤温度较对照显著增高1.3℃和2.2℃,而秸秆和麻地膜处理略低于对照;麻地膜和秸秆处理对玉米生育前期0-20cm土层土壤水分的保水保墒效果显著,较对照分别提高38.1%和34.4%,白色地膜和黑色地膜次之。在麻地膜、秸秆处理下0-20cm土层土壤有机质、速效氮、速效磷含量均显著高于对照,而速效钾含量均显著低于对照,白色地膜和黑色地膜处理与对...
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Published in | 浙江大学学报(农业与生命科学版) Vol. 41; no. 3; pp. 331 - 339 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
宁夏大学农学院,银川,750021
2015
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Subjects | |
Online Access | Get full text |
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Summary: | 为探讨不同覆盖材料对宁夏旱作区土壤性状及玉米前期生长的影响,通过覆盖白色地膜、黑色地膜、麻地膜和秸秆4种材料,以裸地为对照,分析不同覆盖材料对土壤水温、养分状况及玉米前期生长的影响。研究结果表明:玉米苗期至大喇叭口期,白色地膜和黑色地膜处理0-10cm土层土壤温度较对照显著增高1.3℃和2.2℃,而秸秆和麻地膜处理略低于对照;麻地膜和秸秆处理对玉米生育前期0-20cm土层土壤水分的保水保墒效果显著,较对照分别提高38.1%和34.4%,白色地膜和黑色地膜次之。在麻地膜、秸秆处理下0-20cm土层土壤有机质、速效氮、速效磷含量均显著高于对照,而速效钾含量均显著低于对照,白色地膜和黑色地膜处理与对照相比差异无统计学意义。玉米生育前期,麻地膜、秸秆处理分别比对照提前7d和8d进入大喇叭口期。麻地膜、秸秆处理玉米前期株高及地上部生物量显著高于对照,而白色地膜和黑色地膜处理与对照相比差异无统计学意义。可见,采用麻地膜和秸秆覆盖,具有较好的降温和保水保墒效果,土壤养分含量明显增加,显著促进了玉米前期的生长。 |
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Bibliography: | 33-1247/S dry-farming areas; mulching materials; soil water and temperature; soil nutrient; maize growth Summary In order to investigate the effect of different mulching materials on soil properties and growth of maize in the early stage,apot experiment was conducted in dry-farming areas of Ningxia to determine the effects of different mulching materials on soil temperature,soil water,nutrient status and growth of maize in the early stage.Different mulching material treatments of our pot experiment were introduced,which included white plastic film,black plastic film,bast fiber film,and maize straw.A flat plot without mulch was used as a control.Our study results showed that,from seedling stage to the large bell stage of maize,the average temperature in10 cm depth soil layer of white film and black film treatments was 1.3℃and 2.2℃significantly higher than that of control,respectively.In contrast,the temperature of soil mulched with maize straw or bast fiber film slightly dropped compared with the control.In the |
ISSN: | 1008-9209 |
DOI: | 10.3785/j.issn.1008-9209.2014.10.203 |