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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (18): 34-40.doi: 10.11924/j.issn.1000-6850.casb15010047

所属专题： 小麦

• 农学 农业基础科学 • 上一篇    下一篇

吨田宝对旱地小麦生长发育及产量形成的影响

张锦朝,高志强,孙 敏   

  1. (山西农业大学农学院,山西太谷 030801）
  • 收稿日期:2015-01-08 修回日期:2015-02-03 接受日期:2015-02-04 出版日期:2015-07-27 发布日期:2015-07-27
  • 通讯作者: 高志强
  • 基金资助:
    国家现代农业产业技术体系建设专项经费“小麦隐性灾害防控与抗逆稳产综合技术研究”(CARS-03-01-24)；公益性行业科研专项经费“北方主要作物抗旱节水综合技术研究与区域示范”(201303104)；国家自然科学基金“旱地小麦土壤氮素移动与深层几何空间构型的研究”(31101112)；山西省科技攻关项目“旱地小麦休闲期蓄水保墒‘因水施肥’技术的研究与应用”(20140311008-3)。

Effect of Duntianbao on the Growth and Yield Formation of Dryland Wheat

Zhang Jinzhao, Gao Zhiqiang, Sun Min   

  1. (College of Agriculture, Shanxi Agricultural University, Taigu Shanxi 030801)
  • Received:2015-01-08 Revised:2015-02-03 Accepted:2015-02-04 Online:2015-07-27 Published:2015-07-27

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摘要： 为研究不同生育时期喷施不同浓度吨田宝对旱地小麦生长发育和产量形成的影响，于2013—2014年度在山西农业大学闻喜试验基地进行了旱地小麦起身期和挑旗期喷施不同浓度吨田宝的试验。结果表明，起身期喷施吨田宝，促进了拔节期根系发育，减缓成熟期根系衰老，增加拔节期、开花期的叶面积指数和各生育时期干物质量，随浓度大主要通过提高穗数提高产量；挑旗期喷施吨田宝有利于促进有效穗数的形成，随浓度增大主要通过增加穗粒数、千粒重提高产量；起身期、挑旗期配合喷施不同浓度吨田宝增加了开花期的叶面积指数，提高了开花期和成熟期干物质量，显著提高了穗数、穗粒数、产量，增产幅度达5.8%~10%。总之，起身期和挑旗期以1:1，浓度为每公顷750 mL/225 kg水喷施吨田宝显著提高穗数和千粒重，增产效果最好。

关键词: 荒漠河岸林, 荒漠河岸林, 土壤速效氮, 空间变异

Abstract: The paper aims to explore the impacts of spraying different concentrations of Duntianbao on the growth and yield formation of dryland wheat. An experiment was carried out in Wenxi County Shanxi Province from 2013 to 2014, to study the impact in the stages of standing and flagging leaf. The results showed that the growth of roots was accelerated in the jointing stage. The roots were decelerated to die at maturity. In addition, the LAI at the jointing and anthesis stages and the dry matter at all stages increased. When Duntianbao was sprayed at the standing stage, the ear number increased complying with high concentrations. Ear number was the key factor of yield. The ear number increased since the spraying of Duntianbao in the flagging leaf stage. The grain number and the 1000-grains weight increased complying with high concentrations. The grain number and the 1000-grains weight were the key factors of yield. The LAI at the anthesis stage, the dry matter at anthesis and maturity was improved since the spraying of Duntianbao in both two stages. The ear number, grain number per ear and yield were significantly enhanced since the spraying of Duntianbao in both two stages, the yield increased by 5.8%-10%. Therefore, the effect of Duntianbao was the best when the ratio was 1:1 at two stages and at the concentration of 750 mL Duntianbao/225 kg water per hectare. It significantly increased ear number and 1000-grains weight.