Effects of irrigation and urea types on water use efficiency of maize

被引：0
|
作者：
Shao G. [1 ,2 ]
Li Z. [1 ]
Ning T. [1 ]
Zheng Y. [3 ]
Tian S. [1 ]
Wang Y. [1 ]
机构：
[1] State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University
[2] Agrotechnology Extension Station, Agricultural Bureau of Weishan County
[3] State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences
来源：
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | 2010年 / 26卷 / 03期
关键词：
Irrigation; Maize; Urea; Water conservation; Water use efficiency;
D O I：
10.3969/j.issn.1002-6819.2010.03.010
中图分类号：
学科分类号：
摘要：
Water and nitrogen managements are both very important to increase crop yields. For the sake of discussing the effects of irrigation and urea types (normal urea and controlled release urea) on soil water content, kernel filling rate and water use efficiency of maize (Zea Mays L.), an experiment was carried out in a randomized design. Each urea type was used at two nitrogen levels, which were 75 kg/hm2 and 150 kg/hm2, with no nitrogen used as control respectively. Two irrigation levels, no irrigation in the whole growth duration and irrigated 85 mm at grain filling stage, were designed. The results showed that, at the same level of irrigation and nitrogen, soil water contents in 0-140 cm layer of maize applied with controlled release urea (CU) were higher (P<0.05) at pre-tasselling stage, but lower at maturity stage, than those applied with normal urea (NU), which can be named as an effect of "store water at early stage in soil and use it at late stage (SEUL)". Compared with NU, CU could significantly increase kernel filling rate, water use efficiency (WUE), and yield increased efficiency by irrigation (IEI). WUE and IEI of the treatments applying nitrogen at 150 kg/hm2 were higher than those applying at 75 kg/hm2. Compared to no irrigation, irrigation reduced the WUE, but increased kernel filling rate and grain yield. CU coupling effect with soil water was higher than that of NU, which could increase the yield and WUE of maize simultaneously. Further analysis of the results showed that, the increases of WUE and IEI of CU were mainly resulted from SEUL effect and higher kernel filling rate. This research provides academic and instructive meanings for high yield and water use efficiency of maize in subhumid regions.
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页码：58 / 63
页数：5
相关论文
共 22 条
  • [1] Shan L., Zhang S., Is possible to save large irrigation water?-The situation and prospect of water-saving agriculture in China, Chinese Journal of Nature, 28, 2, pp. 71-74, (2006)
  • [2] Song B., Effects of several ground factors on evapotranspiration from the steppe communities, Chinese Journal of Plant Ecology, 20, 6, pp. 485-493, (1996)
  • [3] Yin G., Liu Z., Li G., Et al., Water use efficiency of water and fertilizer coupling on spring wheat, Journal of Soil and Water Conservation, 18, 6, pp. 156-162, (2004)
  • [4] Zand-Parsa S., Sepaskhah A.R., Ronaghi A., Development and evaluation of integrated water and nitrogen model for maize, Agricultural Water Management, 81, 3, pp. 227-256, (2006)
  • [5] Kirda C., Topcu S., Kaman H., Et al., Grain yield response and N-fertilizer recovery of maize under deficit irrigation, Field Crops Research, 93, 2-3, pp. 132-141, (2005)
  • [6] Zhang W., Zhao Z., Bai G., Et al., Response on water stress and low nitrogen in different maize hybrid varieties and evaluation for their adversity-resistance, Scientia Agricultura Sinica, 40, 7, pp. 1361-1370, (2007)
  • [7] Gao Y., Li S., Tian X., Et al., Effects of water supply levels in different growth stages on maize yield under different fertilizer levels, Acta Agronomica Sinica, 32, 3, pp. 415-422, (2006)
  • [8] Wang Y., Wang X., Wang X., Et al., Research on increase yield mechanisms of coated slow-release fertilizers and N utilization ratio by tracing, Journal of Soil and Water Conservation, 20, 5, pp. 109-111, (2006)
  • [9] Diez J.A., Roman R., Cartagena M.C., Et al., Controlling nitrate pollution of aquifers by using different nitrogenous controlled release fertilizers in maize crop, Agriculture Ecosystems & Environment, 48, 1, pp. 49-56, (1994)
  • [10] Ogola J.B.O., Wheeler T.R., Harris P.M., Effects of nitrogen and irrigation on water use of maize crops, Field Crops Research, 78, 2-3, pp. 105-117, (2002)
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