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中国农学通报

中国农学通报 ›› 2021, Vol. 37 ›› Issue (7): 19-23.doi: 10.11924/j.issn.1000-6850.casb2020-0116

• 农学·农业基础科学 • 上一篇    下一篇

施氮量对烟后苦荞产量及植株养分吸收量的影响

张艳军1(), 胡选江1, 刘佳1, 饶敏2, 胡新洲1, 施立安1, 申文智3, 李成春3, 李怀红1, 张翠萍1, 林姣姣1, 杨绍聪1()   

  1. 1玉溪市农业科学院,云南玉溪 653100
    2玉溪市农产品质量安全检验检测中心,云南玉溪 653100
    3澄江市农技推广站,云南澄江 652500
  • 收稿日期:2020-05-20 修回日期:2020-12-31 出版日期:2021-03-05 发布日期:2021-03-17
  • 通讯作者: 杨绍聪
  • 作者简介:张艳军,男,1975年出生,高级农艺师,本科,主要从事农作物种植技术、农业生态环境保护等方面的研究与推广。通信地址：653100 云南省玉溪市红塔区红塔大道18号 玉溪市农业科学院,Tel：0877-2066427,E-mail： 258954328@qq.com。
  • 基金资助:
    玉溪市农业科学院科技计划项目“苦荞新品种筛选及配套技术措施研究项目”(2019-YNK-KQ012)

Effects of Nitrogen Application on Yield and Plant Nutrient Uptake of Tartary Buckwheat After Flue-cured Tobacco

Zhang Yanjun1(), Hu Xuanjiang1, Liu Jia1, Rao Min2, Hu Xinzhou1, Shi Li’an1, Shen Wenzhi3, Li Chengchun3, Li Huaihong1, Zhang Cuiping1, Lin Jiaojiao1, Yang Shaocong1()   

  1. 1Yuxi Academy of Agricultural Sciences, Yuxi Yunnan 653100
    2Yuxi Agricultural Product Quality and Safety Inspection and Testing Center, Yuxi Yunnan 653100
    3Chengjiang Agricultural Technology Promotion Station, Chengjiang Yunnan 652500
  • Received:2020-05-20 Revised:2020-12-31 Online:2021-03-05 Published:2021-03-17
  • Contact: Yang Shaocong

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摘要：

以‘云荞1号’苦荞为材料,在烤烟收获后种植,研究不同施氮量对苦荞产量及养分吸收量的影响,旨在筛选出适合其在玉溪种植的最佳施氮量。结果表明,随着施氮量的增加,苦荞产量表现出先增加后降低的趋势,生育期随之延长,株高随之增高;主要农艺性状和产量构成因素差异不显著,但施氮量为225 kg/hm2主茎节数、一级分枝最多,单株粒数、单株粒重等产量构成因素较好,获得较高产量(2900 kg/hm2),较CK增产720 kg/hm2,增产率33.03%。苦荞养分吸收量方面,随着施氮量的增加,全株吸收氮量呈现出先增加后减低的趋势,吸收磷和钾量变化趋势与氮一致,并以施氮量为225 kg/hm2的植株养分吸收量最高,其次是施氮量为150 kg/hm2。因此,在该试验条件下,最佳施氮量为150~225 kg/hm2,不但产量高,而且植株养分吸收量大。

关键词: 苦荞, 施氮量, 产量, 植株养分, 吸收量

Abstract:

The effects of nitrogen application on yield and plant nutrient uptake of planting tartary buckwheat variety ‘Yunqiao No.1’ after flue-cured tobacco harvest were studied to select the best nitrogen application level in Yuxi. The results showed that with the increase of nitrogen application, the yield increased first and then decreased, the growth period was prolonged and the plant height was increased. There was no significant difference in major agronomic characters and yield components. However, the nitrogen application amount of 225 kg/hm 2 had the largest main stalk pitch number and primary branches, and the yield components of grain number and weight per plant were relatively good, so the yield reached 2900 kg/hm2, which was 720 kg/hm2 or 33.03% higher than that of CK. In terms of plant nutrient uptake, with the increase of nitrogen application, the nitrogen uptake of the whole plant showed a trend of increasing first and then decreasing, and the variation trend of phosphorus and potassium uptake was consistent, and the plant nutrient uptake was the highest with nitrogen application level of 225 kg/hm2, followed by nitrogen application at 150 kg/hm2. Therefore, under this experiment, the optimal nitrogen application rate is 150 kg/hm2 to 225 kg/hm2, which has not only high yield, but also the highest uptake of plant nutrients.

Key words: tartary buckwheat, nitrogen application, yield, plant nutrition, absorbing capacity

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