雷宏军,孙克平,张振华,刘蕾蕾,杨宏光,潘红卫,景明,席海朋.温室辣椒生长和氮素吸收对增氧滴灌的响应[J].干旱地区农业研究,2021,(3):33~41
温室辣椒生长和氮素吸收对增氧滴灌的响应
Response of pepper growth and nitrogen uptake to aerated drip irrigationin greenhouse
  
DOI:10.7606/j.issn.1000-7601.2021.03.05
中文关键词:  增氧滴灌  土壤通气性  净光合速率  氮素吸收  产量和品质
英文关键词:aerated drip irrigation  soil aeration  net photosynthetic rate  nitrogen uptake  yield and fruit quality
基金项目:国家自然科学基金(52079052);河南省科技攻关计划(212102110032);山东省重点研发计划重大科技创新工程(2019JZZY010710);山东省农业重大应用技术创新(SD2019ZZ017);黄河水利科学研究院基本业务费专项(HKY-JBYW-2018-17);华北水利水电大学研究生创新课题(YK2020-07);国家大学生创新创业训练计划项目(202010078016)
作者单位
雷宏军 School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, China 
孙克平 School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, China 
张振华 School of Resources and Environmental Engineering, Ludong University, Yantai, Shandong 264039, China 
刘蕾蕾 School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, China 
杨宏光 School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, China 
潘红卫 School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, China 
景明 Yellow River Water Conservancy Research Institute of Yellow River Water Conservancy Commission, Zhengzhou, Henan 453000, China 
席海朋 School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, China 
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中文摘要:
      以‘康大301’辣椒为供试作物,设置施氮量(低氮225 kg·hm-2和常氮300 kg·hm-2)、掺气量(非曝气和循环曝气)和灌水量(低水量965 m3·hm-2和高水量1 609 m3·hm-2)3因素2水平随机区组试验,系统监测不同处理土壤水饱和度(Sr)、氧气扩散速率(ODR)、氧化还原电位(Eh)、温室辣椒生长生理指标(根系活力、净光合速率、产量和品质)和氮素吸收利用状况。结果表明,与对照处理相比,增氧滴灌处理土壤水饱和度平均降低3.09%,ODR和Eh分别显著提高11.28%和7.85%。在相同灌水量和施氮量水平下,增氧滴灌处理较对照处理净光合速率平均增幅12.97%、根系活力平均增强13.10%(P<0.05),产量平均增产18.18%(P<0.05),辣椒Vc含量和可溶性蛋白质含量分别平均增加了9.45%和18.78%(P<0.05),氮素吸收利用效率(UPEN)平均提高了17.84%(P<0.05)。综上,增氧滴灌可有效改善土壤通气性,促进辣椒生长和氮素吸收利用效率,其中灌水量1 609 m3·hm-2、施氮量300 kg·hm-2、循环曝气的组合方案为推荐方案。
英文摘要:
      Taking ‘Kangda 301’ pepper as the test crop, a randomized block experiment was conducted with three factors and two levels: nitrogen (N) application rate (225 kg·hm-2 and 300 kg·hm-2),air void fraction (subsurface drip irrigation with conventional water and aerated water), and irrigation amount (965 m3·hm-2 and 1 609 m3·hm-2). Soil water filled pore space (WFPS), oxygen diffusion rate (ODR), oxidation\|reduction potential (Eh), physiological indexes of pepper growth (root activity, net photosynthetic rate, yield and quality) and N uptake and utilization of different treatments were systematically monitored. Results showed that compared with the control, the soil water filled pore space treatments decreased by 3.09%, and ODR and Eh increased by 11.28% and 7.85% significantly in aerated drip irrigation.Under the same irrigation amount and N application rate, the photosynthetic rate, root activity, yield, Vc content, and soluble protein content in aerated drip irrigation treatments increased by 12.97, 13.10 (P<0.05), 18.18 (P<0.05), 9.45, and 18.78% (P<0.05), respectively, and N uptake and utilization efficiency increased by 17.84% (P<0.05) compared to the control.In summary, aerated drip irrigation effectively improved soil aeration, promoted pepper growth, and enhanced N absorption capacity, and the combination of irrigation amount of 1 609 m3·hm-2, N application rate of 300 kg·hm-2, and air void fraction of 15% was the suggested scheme.
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