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膜下滴灌追肥量对谷子生长发育及产量的影响
白晓雷,柴晓娇,王显瑞,付颖,沈轶男,张姼,宋青山,于立涛,李彩银,冯晓娟
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(赤峰市农牧科学研究所;巴林左旗鑫达种业有限公司)
摘要:
为了确定谷子生长发育所需的适宜追肥量,提供谷子高产高效施肥理论依据。以高产优质的谷子品种赤谷K1为材料,于2020年采用水肥一体化技术田间试验,以不灌水不覆膜追肥10kg/667m2处理(CK1)和只膜下滴灌不追肥(CK2)为对照在谷子拔节期设置4个追肥量处理,研究了膜下滴灌追肥量对谷子生长发育及产量的影响。结果显示:覆膜栽培可以缩短谷子出苗天数2天,提早成熟11天,减小谷子生产风险,并促进谷子生长发育提高产量;不覆膜传统追肥方式追肥10kg/667m2和膜下水肥一体化追施5kg/667m2的氮钾复合水溶性复合肥,都不能满足谷子生长发育对肥料营养的需求,不能达到本试验供试谷子品种的产量潜力。而膜下水肥一体化15 kg/667m2及以上追肥量同10 kg/667m2比较,业已不能起到增产增效的作用,还小幅度的增长了谷子的生育期,增大了谷子倒伏和受霜冻灾害减产的风险,并造成了肥料的浪费,加重了农业环境污染。膜下水肥一体化追肥10kg/667m2的氮钾复合水溶性复合肥最为适宜谷子生产。
关键词:  谷子  膜下滴灌  追肥量  生长发育  产量
DOI:
投稿时间:2021-09-02修订日期:2021-09-09
基金项目:国家重点研发计划资助,项目编号2019YFD1001700。
Effect of Topdressing Amount on the Growth and Yield of Foxtail MilletUnder Film-mulched Drip Irrigation
()
Abstract:
In order to determining the optimum of topdressing for the growth of millet can provide theoretical basis for highyield and efficient fertilization of millet. In this study, the high-yield millet variety ChiguK1 was used as the material, in 2020 field experiment used technology of water and fertilizer, withno film coveringfertilize 10kg/667m2treatment (CK1) and under filmdrip irrigation without topdressingtreatment (CK2) for comparison in elongation stageissue four fertilizer quantity processing , the effects of different top-dressing amount were studied under mulch drip irrigation on the growth and yield of millet .The results obtained are as follows:film mulching culture can shorten the emergence days of millet by 2 days, advance the maturity of millet by 11 days, reduce the risk of millet production, and promote the growth and development of millet and improve the yield.The optimum amount of topdressing was 10kg/667m2under the condition of drip irrigation under filmcultivation.
Key words:  Millet  Under film-mulched drip irrigation  Topdressing amount  Growth and development  Yield

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