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    李伟, 丁启朔, 何瑞银, 等. 不同耕作和播种模式下稻茬麦种子区微气候特征及出苗效应[J]. 华南农业大学学报, 2018, 39(1): 45-50. DOI: 10.7671/j.issn.1001-411X.2018.01.008
    引用本文: 李伟, 丁启朔, 何瑞银, 等. 不同耕作和播种模式下稻茬麦种子区微气候特征及出苗效应[J]. 华南农业大学学报, 2018, 39(1): 45-50. DOI: 10.7671/j.issn.1001-411X.2018.01.008
    shu
    LI Wei, DING Qishuo, HE Ruiyin, LI Haikang, RUI Chaojie. Micro-climate characteristics and seedling qualities in seed-zone of post-paddy wheat field under different tillage and seeding modes[J]. Journal of South China Agricultural University, 2018, 39(1): 45-50. DOI: 10.7671/j.issn.1001-411X.2018.01.008
    Citation: LI Wei, DING Qishuo, HE Ruiyin, LI Haikang, RUI Chaojie. Micro-climate characteristics and seedling qualities in seed-zone of post-paddy wheat field under different tillage and seeding modes[J]. Journal of South China Agricultural University, 2018, 39(1): 45-50. DOI: 10.7671/j.issn.1001-411X.2018.01.008
    shu

    不同耕作和播种模式下稻茬麦种子区微气候特 征 及 出 苗 效 应

    Micro-climate characteristics and seedling qualities in seed-zone of post-paddy wheat field under different tillage and seeding modes

      摘要
    • 摘要:
      目的  评价不同耕作、播种模式的区域适应性，为稻麦轮作区耕作、播种技术的优化及相关精密播种机具的设计提供理论依据，确保稻茬麦的优质高产。
      方法  利用种子区微气候测试仪监测免耕露播覆草(NT1)，免耕条播(NT2)和常规旋耕盖籽(CK)3种模式的稻茬麦种子区微气候条件及其对种子萌发及立苗的影响。
      结果  田间试验表明，3种模式的种子区微气候差异显著。NT1条件下种子区微气候相对稳定，CK条件下由于旋耕形成大土块，大土块垒结后形成的大尺度孔隙空间使种子区微气候变化较大，不利于保墒。NT2条件下的种子区微气候比NT1和CK相对稳定且温湿度条件更适合种子的萌发。NT1、NT2和CK条件下出苗率分别为 58.39%、71.81%和61.80%。
      结论  不同耕作和播种模式的种子区微气候条件及种子萌发立苗效果差异显著，使用种子区微气候测试仪能够快速准确评价稻茬麦耕作、播种模式的区域适应性。良好的耕种措施、种床环境以及种土接触是保证小麦出苗生长的关键。

       

      Abstract:
      Objective  To evaluate the regional applicability of different tillage and seeding modes, provide a theoritical basis for cultivating in rice-wheat rotation area, optimizing sowing technique and designing related precision seeders, and guarantee high quality and yield of post-paddy wheat.
      Method  A seed-zone micro-climate tester was applied to continuously monitor the micro-climate conditions, seed germination and seedling establishment under three seeding modes, including no-till mulching (NT1), no-till drill (NT2) and rotary-tilling broadcasting (CK).
      Result  The field experiment showed that the seed-zone micro-climates under three seeding modes varied significantly. Seed-zone micro-climate under NT1 mode remained relatively stable. Large soil clods formed under CK mode, and led to a large change of micro-climate in seed-zone and made it difficult to conserve soil moisture. NT2 created the most stable seed-zone micro-climate, providing the most suitable temperature and humidity for seed germination. The germination rates under NT1, NT2 and CK modes were 58.39%, 71.81% and 61.80% respectively.
      Conclusion  Different tillage and seeding modes significantly influence seed-zone micro-climate, seed germination and seedling establishment. The proposed seed-zone micro-climate tester is suitable for quickly and accurately evaluating the regional applicability of tillage and seeding modes for past-paddy wheat. Excellent tillage procedures, good seedbed environment and large contact area between seed and soil are the key factors of wheat growth.

       

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