Compensation effects of planting density and fertilization on grain yield,water use efficiency and seeds nutrient contents of dry land spring wheat

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Journal Title:
ACTA BOTANICA BOREALI-OCCIDENTALIA SINICA
Issue:
Volume 23, Issue 11, 2003
DOI:
Key Word:
dry land spring wheat;soil fertilization;compensation effect;water use efficiency;grain yield

Abstract: To assess the compensation effects of input fertilizers on the crop yield and water use efficiency (WUE),two-year experiments of spring wheat planting density and fertilization influence yield formation were conducted in the semiarid field conditions of loess hilly area in Ningxia Uh autonomous region.A comparison of wheat yield and WUE sequences under four planting densities with five fertilization levels shows that maximum yield and highest WUE were achieved under the optimum fertilizer input of 90 kg N and 135 ckg P2O5 per hm2 with 500 seeds/m2.Increase soil fertilization was positively correlated with grain yield and water use efficiency of spring wheat,with a correlation coefficient were 0.959 and 0.894,planting density,however,showed poor correlation with both.Increasing fertilizer level significantly increased fertile spikelets number,kernels per spike and kernel weight.These components were decreased with the increase in planting density.Fertile spikelets number was sensitive to fertilization,whereas kernel number and weight was mainly affected by plant density.Fertilization applied in spring wheat improved root system development and especially enhanced roots growth in the cultivated soil layer of 0~20 cm.Ameliorated root system was able to improve crop water use and nutrient absorption,and hence,crop yield and water use efficiency was increased.Grain yield of spring wheat was increased by 44.6% and 55.4% when P and P+N+K were applied,respectively.A significant increase in yield was also obtained with N application but not with K.P or P+N promoted spike development and hence,increased seed production.N+P+K improved the quality of seeds,and the content of N,P and K in seed increased by 18.5%,18.4% and 8.1%,respectively,compared with no nutrient treatment.This study highlights the compensation effects of improving soil fertility to high efficient use of limited water in dry land spring wheat production.

  • [1]HOWELL T A.Enhancing water use efficiency in irrigated agriculture[J].Agronomy Journal,2001,93:281-289.
  • [2]MAKCAMOB T N.Response of wheat to irrigation with small amounts of water applied in various ways[J].Agricultural Water Management,1985,10:357-364.
  • [3]TURNER N C.Plant water relations and irrigation management[J].Agricultural Water Management,1990,17:59-73.
  • [4]RICHARDS R A,REBETZKE G J,CONDON A G,VAN HERWAARDEN A F.Breeding opportunities for increasing the efficiency of water use and crop yield in temperate cereals[J].Crop Science,2002,42:111-121.
  • [5]WEI X P,WANG Q J,WANG W Y.The loss of soil nutrients on Loess Plateau affected by precipitation[A].Laflen J M,Tian J,Huang C,et al.Soil erosion and dryland farming[C].New York:CRC Press,2000:176-184.
  • [6]SHAN L,CHEN P Y.Eco-physiological bases of dryland farming[M].Beijing:Chinese Academic Press,1998:23-54(in Chinese).
  • [7]WELCH N H,BURNETT E,HUDSPETH E B.Effect of fertilizer on seedling emergence and growth of several grass species[J].Journal of Range Management,1962,15(2):94-93.
  • [8]HARMSEN K,SHEPHERD K D,ALLAN A Y.Crop response to nitrogen and phosphorus in rainfed agriculture[A].Proceedings of the 17th Colloquium of the International Potash Institute[C].Morroco:Rabat and Marrakech,1983:223-248.
  • [9]KORENTAJER L,BERLINER P R.Effects of moisture stress on nitrogen fertilizer response in dryland wheat[J].Agronomy Journal,1988,80:977-981.
  • [10]SHAN L,DENG X P.Agricultural development and water-use in high efficiency in the semiarid area of Loess Plateau[J].Bulletin of Chinese Agricultural Science and Technology,2000,4:34-38(in Chinese with English Abstract).
  • [11]WELCH N H,BURNETT E,ECK H V.Effect of row spacing,plant population,and nitrogen fertilization on dryland grain sorghum production[J].Agronomy Journal,1966,58:160-163.
  • [12]STOCKLE C O,CAMPBELL G S.Simulation of crop response to water and nitrogen:an example using spring wheat[J].Transactions of the ASAE,1988,32:66-74.
  • [13]GUPTA A P,NARWAL R P,ANTIL R S,DEV S.Sustaining soil fertility with organic-C,N,P,and K by using farmyard manure and fertilizer-N in a semiarid zone:a long-term study[J].Arid Soil Research and Rehabilitation,1992,6:243-251.
  • [14]HATFIELD J L,SAUER T J,PRUEGER J H.Managing soils to achieve greater water use efficiency[J].Agronomy Journal,2001,93:271-280.
  • [15]RICHARDSON C W,BAIRD R W,FRYREAR D W.Graded furrows for water erosion control[J].Journal of Soil and Water Conservation,1969,24(2):60-63.
  • [16]WILLIAMS J R.Soil erosion effects on soil productivity:a research perspective[J].Journal of Soil and Water Conservation,1981,36(2):82-90.
  • [17]BILBRO J D.Crossplanting winter wheat reduces potential wind erosion of soil in semiarid regions[J].Journal of Soil and Water Conservation,1987,42:267-269.
  • [18]DENG X P,SHAN L,INANAGA S.High efficient use of limited supplemental water by dryland spring wheat[J].Transactions of the CSAE,2002,18(5):84-91.
  • [19]KINIRY J R.Kernel weight increase in response to decreased kernel number in sorghum[J].Agronomy Journal,1988,80:221-226.
  • [20]PECETTI L,DAMANIA A B,KASHOUR G.Geographic variation for spike and grain characteristics in durum wheat germplasm adapted to dryland conditions[J].Genetic Resources and Crop Evolution,1992,39:97-105.
  • [21]WILLIAMS J.Dependence of root water potential on root radius and density[J].Journal of Experimental Botany,1976,27:121-124.
  • [22]MERRILL S D,UPCHURCH D R.Converting root numbers observed at mini-rhizotrons to equivalent root length density[J].Soil Sci.Soc.Am.J.,1994,58:1 061-1 067.
  • [23]COOPER P J M,GREGORY P J,TULLY D,HARRIS H C.Improving water use efficiency of annual crops in the rainfed farming systems of West Asia and North Africa[J].Experimental Agriculture,1987,23:113-158.
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