ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

河套灌區(qū)不同灌溉方式春玉米耗水特性與經(jīng)濟(jì)效益分析
CSTR:
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

國(guó)家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2016YFC0400200)和國(guó)家自然科學(xué)基金項(xiàng)目(51879223)


Water Use Characteristics and Profit Analysis of Spring Maize Production with Different Irrigation Methods in Hetao Irrigation District
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問(wèn)統(tǒng)計(jì)
  • |
  • 參考文獻(xiàn)
  • |
  • 相似文獻(xiàn)
  • |
  • 引證文獻(xiàn)
  • |
  • 資源附件
  • |
  • 文章評(píng)論
    摘要:

    地處干旱半干旱區(qū)的內(nèi)蒙古河套灌區(qū)地表水資源短缺和土壤鹽漬化并存,。為尋求更加節(jié)水高效的灌溉方式,通過(guò)連續(xù)3年的田間試驗(yàn),,設(shè)置畦灌,、溝灌和滴灌3種不同灌溉方式,并在溝灌和滴灌下設(shè)置高,、中,、低3個(gè)灌水水平,以傳統(tǒng)畦灌為對(duì)照,,分析了春玉米耗水特性,、產(chǎn)量響應(yīng)和經(jīng)濟(jì)效益。結(jié)果表明,,畦灌下平均有10%的灌水通過(guò)深層滲漏而損失,,而滴灌低水處理每個(gè)生長(zhǎng)季有10.5~29.0mm的地下水通過(guò)毛管上升進(jìn)入根區(qū)而被作物吸收;滴灌條件下玉米籽粒產(chǎn)量-水分響應(yīng)系數(shù)Ky(0.684)小于溝灌(0.8215),,說(shuō)明因作物耗水量的減少所引起的減產(chǎn)幅度更小,,這更易于在潛在干旱脅迫下維持較高的作物產(chǎn)量,;相對(duì)于傳統(tǒng)畦灌,溝灌高水處理可以增加玉米籽粒產(chǎn)量和凈收益,,中水處理可以在保持產(chǎn)量和凈收益持平的情況下,,節(jié)約灌溉水31%;滴灌條件下,,維持土壤水勢(shì)-10kPa和-30kPa以上的高水和中水處理相對(duì)節(jié)水分別為19%和57%,,且提高春玉米籽粒產(chǎn)量分別為21%和15%,提高凈收益分別為28%和22%,,水分利用效率較高,。因此,綜合考慮黃河引水情況,、地下水狀況和農(nóng)民接受程度等因素,,建議將溝灌中水處理或滴灌中水處理作為替代傳統(tǒng)畦灌的最佳方案。

    Abstract:

    Located in the arid and semi-arid areas of Northwest China, the Hetao Irrigation District of Inner Mongolia is facing both shortage of surface water resources and severe soil salinization, therefore the high-efficient watersaving irrigation methods are the inevitable choice for sustainable agricultural production. A three-year field experiment was conducted to study the effects of different irrigation methods on yield, water productivity and net return of spring maize in the Hetao Irrigation District. Three irrigation methods, i.e., border irrigation (BI), furrow irrigation (FI) and drip irrigation (DI), were compared. Taking the recommended traditional BI water level as the control, three water levels imposed for FI were recommended, namely level (450mm, H), 0.8×recommended level (360mm, M) and 0.6×recommended level (270mm, L), respectively;while the three levels for DI were conducted based on different threshold values of soil water matric potential, i.e., -10kPa (H), -30kPa (M), and -50kPa (L), respectively. Totally seven treatments were implemented by randomized block design with three replicates. The results showed that the grain and straw yields were significantly affected by treatments. Under BI condition, totally average 10% of irrigation water was lost through deep percolation over the studied three years;whereas, under DI conditions, about 10.5~29.0mm water of groundwater was contributed into the root zone through capillary rise for crop water uptake. The response coefficient Ky of maize grain yield-soil water under DI (0.684) was smaller than that under FI (0.8215), indicating that the reduction of crop yield caused by decrease of crop water consumption was smaller under DI than that under FI. That meant DI helped maintain a higher crop yield under potential drought stress than FI. Compared with traditional BI, FI-H (450mm) could increase the grain yield and net return, FI-M (360mm) could save 31% of irrigation water while keeping the grain yield and net yield as same as the control. Compared with BI, DI-H and DI-M treatments could save irrigation water by 19% and 57% respectively, but increase grain yield by 21% and 15%, and increase net yield by 28% and 22%, respectively, resulting in a higher water use efficiency. Therefore, considering the external environmental conditions, including water diverted from the Yellow River, groundwater status and local farmers’ acceptance etc., water level with FI-M or DI-M could be used as an alternative to traditional BI for water-saving irrigation.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

鄒宇鋒,蔡煥杰,張?bào)w彬,王云霏,徐家屯.河套灌區(qū)不同灌溉方式春玉米耗水特性與經(jīng)濟(jì)效益分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2020,51(9):237-248. ZOU Yufeng, CAI Huanjie, ZHANG Tibin, WANG Yunfei, XU Jiatun. Water Use Characteristics and Profit Analysis of Spring Maize Production with Different Irrigation Methods in Hetao Irrigation District[J]. Transactions of the Chinese Society for Agricultural Machinery,2020,51(9):237-248.

復(fù)制
分享
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2020-03-31
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2020-09-10
  • 出版日期:
文章二維碼