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Soil and water conservation protective cultivation is an advanced cultivation technology that avoid cultivation or few cultivation on farmland and with stubble cover.Protective cultivation technology is an integration technology that use stubble cover,no-tillage cultivation,deep-plough with machine,and weeding with chemistry.Adopting soil and water conservation protective cultivation can reduce the loss of soil and water in northeast blackland area and improve the soil anti-erodibility.
中文摘要：水土保持保护性耕作是对农田实行免耕少耕，并用农作物秸秆残茬覆盖地表的一项先进耕作技术，保护性耕作技术是由秸秆覆盖、免耕播种、机械深松和化学除草等核心技术组成的一项集成技术，采用水土保持保护性耕作措施可以有效减少东北黑土区的水土流失，提高黑土区土壤抗蚀性。
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The model was designed with 1: 4 scale, strips width of protection tillage and tradition farming are uniform, to analyze the construction characteristics of the wind velocity flows, the wind velocity lowering rate compared with the wind velocity of farmland and aerodynamic roughness along lengthways of strips under the different experiment wind velocity, diverse width of strip, dissimilar residual stubble density and residual stubble height term.
模型比例尺取1：4，保护性耕作带带宽和裸露带带宽相等，分析不同实验风速、不同带宽、不同作物残茬密度及不同作物残茬高度情况下，风速流场特征、沿带纵向对应裸地风速降低率状况和空气动力学粗糙度。
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The results showed that a subsoiler with adjustable wings could loose the deep soil with dead interval and loose the surface soil completely.
保护性耕作要求大量的作物残茬覆盖地表，耕作量减少到能保证种子发芽即可，使用农药来控制杂草和病虫害。
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Being a protective tillage, the no-tillage means getting rid of not only the tillage before sowing, but also the intertill after sowing, and leaving the plant residue after harvesting.
中文题名稻田自然免耕体系土壤微生物及有机质周转研究副题名外文题名 Study on the microbial characteristics and the turnover of organic matter in paddy soil under a long-term no-tillage and ridge culture 论文作者张磊导师谢德体教授魏朝富研究员学科专业土壤学研究领域\研究方向土壤生物和生态学位级别博士学位授予单位西南农业大学学位授予日期2002 论文页码总数92页关键词稻田土壤生态学土壤有机质土壤微生物免耕馆藏号BSLW /2003 /S154 /1 免耕制是一种保护性耕作制，指同一块土壤在一定年限内，不仅免除播前耕作，也免除播后中耕，作物收获后直接将作物残茬留在土壤中的耕作方式。
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It is advanced farming technology which through the implementation of reduced tillage, no-tillage technology, using crop stalks stubble ground cover to reduce soil water erosion, wind erosion, so as to enhance the capacity of soil fertility and drought-resistance .Function and role of conservation tillage technology have been proved by practice.
保护性耕作技术是相对于传统耕作的一种新型耕作技术，起源于19世纪末的美国，通过对农田实行少耕、免耕技术，尽可能用农作物秸秆、残茬覆盖地表，以减少土壤水蚀、风蚀，从而提高土壤肥力和抗旱能力的先进耕作技术。
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mulch spreader：切碎植物撒布机
mulch layer 土壤覆盖机 | mulch spreader 切碎植物撒布机 | mulch tillage 留残茬耕作
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Burying crop stubbles, fertilizers and weeds：翻埋残茬、肥料和杂草
2 创造深厚的耕层和适宜的苗床 Creating deep tilth and suitable see... | 3 翻埋残茬、肥料和杂草Burying crop stubbles, fertilizers and weeds | 第二节 不同土壤耕作措施的作用 Effects of different tillage mea...
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trash farming：残茬耕作,残留耕作,不翻垡耕作
trash extractor ==> 残屑分离机 | trash farming ==> 残茬耕作,残留耕作,不翻垡耕作 | trash mover ==> 清除杂质输送器
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Subsurface tillage：亚表土耕作
stubble mulch tillage 残茬覆盖耕作 | subsurface tillage 亚表土耕作 | surface tillage 表土耕作