Are crop coefficients for sdi different from those for sprinkler irrigation application?

被引：0
作者：
Evett S.R. [1 ]
Marek G.W. [1 ]
Colaizzi P.D. [1 ]
Brauer D. [1 ]
Howell T.A. [1 ]
机构：
[1] USDA-ARS Soil and Water Management Research Unit, Bushland, TX
来源：
Transactions of the ASABE | 2020年 / 65卷 / 03期
关键词：
Crop coefficient; FAO56; MESA; SDI; Sprinkler irrigation; Subsurface drip irrigation;
D O I：
10.13031/TRANS.13920
中图分类号：
学科分类号：
摘要：
Subsurface drip irrigation (SDI) has become an important irrigation application method in the U.S. Southern High Plains where pan evaporation exceeds 2,400 mm per year. Early research comparing SDI with spray sprinklers showed that SDI was over-applied when scheduling irrigations using crop coefficients developed using sprinkler irrigation. Thus, crop coefficients developed using SDI may be smaller than those developed using sprinkler irrigation. Grain corn was grown for two years on large, precision weighing lysimeters at Bushland, Texas, with two lysimeters irrigated by SDI and two by mid-elevation spray (MESA) irrigation. Data used in this study were for fields irrigated to replenish soil water in the top 1.5 m of the soil to field capacity, as indicated by weekly neutron probe readings (100% replenishment). Crop coefficients developed for SDI (Kc_SDI) were compared with those developed for MESA (Kc_MESA) using ASCE standardized reference ET equations. The value of Kc_SDI ranged from 0.83 to 0.89 of Kc_MESA for the two years. Values of Kc_SDI remained consistently less than Kc_MESA even after maximum leaf area index was reached, indicating that considerable evaporative loss from the soil surface occurred with MESA irrigation even after full canopy cover. When we shortened the initial period after planting from 30 to 20 d and followed FAO 56 recommendations for surface drip irrigation under full-cover plastic mulch, we calculated basal Kc (Kcb) values (ETo basis) that were reasonably close to our Kc values for SDI for the crop development and early mid-season periods but were greater than our data for the later mid-season and late season periods. © 2020 American Society of Agricultural and Biological Engineers.
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页码：1233 / 1242
页数：9
相关论文
共 24 条
  • [1] Allen R. G., REF-ET, Reference evapotranspiration calculator, (2012)
  • [2] Allen R. G., Pereira L. S., Raes D., Smith M., Crop evapotranspiration: Guidelines for computing crop water requirements, (1998)
  • [3] The ASCE standardized reference evapotranspiration equation, (2005)
  • [4] Colaizzi P. D., Evett S. R., Howell T. A., Cotton production with SDI, LEPA, and spray irrigation in a thermally limited environment, Intl. Water Irrig, 26, 1, pp. 10-12, (2006)
  • [5] Colaizzi P. D., Evett S. R., Howell T. A., Near-surface soil water and temperature for SDI, LEPA, and spray irrigation, Proc. 27th Annual Intl. Irrigation Show Tech. Conf, (2006)
  • [6] Colaizzi P. D., Evett S. R., Howell T. A., Baumhardt R. L., Comparison of grain sorghum, soybean, and cotton production under spray, LEPA, and SDI, Proc. 21st Annual Central Plains Irrig. Conf, pp. 122-139, (2009)
  • [7] Colaizzi P. D., Schneider A. D., Evett S. R., Howell T. A., Comparison of SDI, LEPA, and spray irrigation performance for grain sorghum, Trans. ASAE, 47, 5, pp. 1477-1492, (2004)
  • [8] Evett S. R., Heng L. K., Moutonnet P., Nguyen M. L., Field estimation of soil water content: A practical guide to methods, instrumentation, and sensor technology, (2008)
  • [9] Evett S. R., Howell T. A., Schneider A. D., Copeland K. S., Dusek D. A., Brauer D. K., Gowda P. H., The Bushland weighing lysimeters: A quarter century of crop ET investigations to advance sustainable irrigation, Trans. ASABE, 59, 1, pp. 163-179, (2016)
  • [10] Evett S. R., Kustas W. P., Gowda P. H., Anderson M. C., Prueger J. H., Howell T. A., Overview of the Bushland evapotranspiration and agricultural remote sensing experiment 2008 (BEAREX08): A field experiment evaluating methods for quantifying ET at multiple scales, Adv. Water Resour, 50, pp. 4-19, (2012)
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