| 李华伟，徐 月，司纪升，马汇泉，吴建军,王法宏.耕层优化双行匀播对麦田土壤理化特性的影响[J].麦类作物学报,2014,34(10):1406 |
| 耕层优化双行匀播对麦田土壤理化特性的影响 |
| Influence of Topsoil Modification and Double Row Sowing Technology on Soil Physical and Chemical Properties of Wheat Field |
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| DOI：10.7606/j.issn.1009-1041.2014.10.14 |
| 中文关键词: 耕作方式 土壤容重 土壤含水量 土壤速效养分 微生物量碳氮含量 土壤酶活性 |
| 英文关键词:Tillage method Soil bulk density Soil water content Soil available nutrients Microbial biomass carbon and nitrogen Soil enzyme activity低氮水平下H2S对小麦硝态氮吸收的影响 |
| 基金项目:国家农业科技成果转化基金项目；山东省农业重大应用技术创新项目；国家小麦产业技术体系项目（CRAS-3-1-21）；山东省现代农业产业技术体系项目 |
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| 中文摘要: |
| 为揭示耕层优化双行匀播技术的增产机理，在2012-2013年小麦生长季，于山东省农科院作物所试验基地，通过大田试验，以鲁原502为材料，比较了旋耕（RT）、深耕（DT）和耕层优化双行匀播（MT）3种耕作方式下麦田0~105 cm内不同土层土壤容重、含水量、速效养分含量、微生物量碳氮含量、酶活性等理化特性的差异。结果表明，RT和DT易使土壤出现犁底层，而MT可有效改善土壤物理结构，显著降低25~45 cm土层土壤容重，并在小麦不同生育时期均能维持土壤较高含水量，增强土壤蓄水能力。与RT和DT相比，MT可有效增加25~45 cm土层土壤碱解氮、速效磷和速效钾含量，提高土壤微生物量碳氮含量及土壤酶活性。说明耕层优化技术能够加深耕层，同时可有效改善小麦根际土壤的理化特性。 |
| 英文摘要: |
| The effect of three different tillage methods,including deep tillage,rotary tillage and double row sowing- topsoil modification technology (DS-TOT),on soil bulk density,water content at different periods,soil available nutrients,carbon and nitrogen of soil microbial biomass and activities of soil enzymes were investigated using wheat variety Luyuan 502 in a field experiment. The results showed that DS-TOT could ameliorate the soil physical structure and reduce the soil bulk density. Compared with deep tillage and rotary tillage,DT-SOT significantly increased soil water content at different growth stages of wheat. At the same time,DT-TOT could effectively improve the available nutrients in 25~45 cm soil depth,enhance the carbon and nitrogen content of soil microbial biomass and the activities of soil enzymes. |
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