钵苗机插方式下不同栽插深度对再生稻生长及产量的影响
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S511

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河南省重大科技专项(171100110300);河南省农业产业技术体系建设专项资金(Z2012-04-G01);信阳市创新应用专项(20180006)


Effects of Different Transplanting Depth on Growth and Yield of Ratooning Rice under Pot Seedling Machine Transplanting Mode
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    摘要:

    为研究水稻钵苗精确摆栽技术在豫南稻区再生稻生产中的最佳栽插深度,对两优6326进行5个不同栽插深度试验。结果表明:栽插深度过浅,易漂秧倒伏,影响栽插质量,成熟期容易倒伏,影响产量;栽插深度越深,返青越慢,分蘖越迟;栽插深度过深,易产生僵苗不发,秧苗分蘖率降低,有效穗群体缺失过大,降低产量;不同栽插深度下,再生稻有效穗数和穗粒数是影响产量的主要因素;在栽插深度为2 cm时,综合性状表现最好,头季稻产量和再生稻产量均为最高,两季产量为12 777 kg/hm2

    Abstract:

    In order to study optimum planting depth of rice pot seedling machine on ratooning rice production of South Henan province, we chose Liangyou 6326 as research materials and set five different planting depths. The results showed that when transplanting depth is too shallow, easy to drift seedling lodging, affecting the quality of transplanting, mature period easy lodging, affecting output. The deeper the rice is planted, the slower it is turn to green and tillering. If the depth of planting is too deep, it is easy to produce dead seedlings, and the tiller rate of seedlings is reduced, and the effective panicle population is lost too much, which reduces the yield. The effective panicle number and grain number per panicle were the main factors affecting yield under different planting depth.When the planting depth was 2 cm, the yield of first season rice and regrowth rice was the highest of 12 777 kg/ha.

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余贵龙,刘祥臣,张强,丰大清,赵海英,李平,谷孟轩.钵苗机插方式下不同栽插深度对再生稻生长及产量的影响[J].东北农业科学,2021,46(6):17-21.

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  • 收稿日期:2019-12-30
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  • 在线发布日期: 2024-11-26
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