不同节水方式对旱育秧秧苗素质和产量的影响
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家科技支撑计划(2012BAD40B00)、农业部公益行业(农业)科研专项(201203031-02-201202)、云南省科技创新强省计划(2010AD008)、云南省现代农业水稻产业技术体系、云南省创新人才培养计划(2011CI058)


Effects of different water-saving modes on dry nursery seedling quality and yield
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    摘要:

    以高原粳稻抗旱品种云昌粳1号为材料,考察7种节水方式(稻草覆盖、遮阴处理、抗旱剂、旱育保姆、2叶期到4叶期干旱、4叶期到5叶期干旱、浇水80%)对旱育秧秧苗素质和产量的影响。结果表明:7种节水方式栽培,可分别实现节水3 975.60、2 257.50、2 169.15、1 675.80、3 597.45、1 341.90、1 775.25 m3/hm2,效果显著,其中以稻草覆盖节水最多;施用旱育保姆可显著提高秧苗素质,有效穗达4.238 5×106穗/hm2,颖花数达6.02×109朵/hm2,库容量最大,产量最高,为10.15 t/hm2,增产显著;阶段性干旱(2叶期到4叶期干旱、4叶期到5叶期干旱)的秧苗素质较差,有效穗和库容量较少,产量分别为7.28、7.37 t/hm2,显著减产。

    Abstract:

    Abstract: Using Yunchangjing No.1, a drought resistant variety in Yunnan plateau as the experimental sample, we have studied the effect of seven water-saving modes on the dry nursery seedling quality and yield(they are straw mulching, shading treatment, drought resistant agent, dry-cultivation nurse, the 2–4 leaf stage drought, the 4–5 leaf stage drought and 80% irrigation). The result shows that the cultivation of 7 water-saving modes can help to save water of 3 975.60, 2 257.50, 2 169.15, 1 675.80, 3 597.45, 1 341.90, 1 775.25 m3/hm2 respectively, especially, the straw mulching mode has the most significant efficiency in saving water. In addition, application of dry-cultivation nurse can significantly improve the seedling quality as well as the number of effective panicles (4.238 5×106 /hm2) and spikelet number (6.02×109 /hm2), which ultimately produce the highest yield (10.15 t/hm2). The stage droughts (2–4 leaf stage drought and 4–5 leaf stage drought) reduce the seedling quality, the number of effective panicles and spikelet numbers are reduced accordingly, and the yields are significantly reduced to 7.28 t/hm2 and 7.37 t/hm2 respectively. In conclusion, applying the dry-cultivation nurse in rice cultivation can not only save water but also increase the yield.

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李贵勇,王云华,资月娥,夏琼梅,龙瑞平,杨从党.不同节水方式对旱育秧秧苗素质和产量的影响[J].湖南农业大学学报:自然科学版,2013,39(5):449-452.

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  • 收稿日期:2013-07-04
  • 最后修改日期:2013-07-04
  • 录用日期:2013-09-30
  • 在线发布日期: 2013-10-09
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