Effect of Population Configuration on Water Use and Yield of Winter Wheat

doi:10.3969/j.issn.1000-7091.2013.02.030

Abstract

Abstract: A pot experiment was conducted with different planting densities and planting patterns to explore the theoretical basis for obtaining the high yield and saving water of winter wheat. The experiment was designed with 2 planting patterns:equal space drill planting(W1,space 20 cm)and wide planting(W2,width 10 cm,space 30 cm),and 4 planting densities:105×104,150×104,210×104and 270×104plants/ha. The water condition was abundant in earliergrowth period and dry in mid and later period. The results showed that the yield of P1,P2,P3 and P4 was 14. 39%,12. 54%,6. 28% and 14. 37% higher in W1 than in W2,respectively. Under W1 condition,P4 showed the highest yield(8 270.77 kg/ha)among all densities,while it was P3(7 392. 43 kg/ha)under W2. The density and planting pattern had significant effects on spike number,grain number per spike and 1 000-grain weight. The daily water consumption from jointing to anthesis stage of winter wheat was 3. 6 and 2. 7 times that from anthesis to maturity stage and sowing to jointing stage,respectively. The water use efficiency of W1 was higher than that of W2 in the same density. The P4(270×104plants/ha)of W1 had the highest yield and suitable water use efficiency,so it should be the best population combination mode in the experiment.

Key words: Winter wheat, Population configuration mode, Water use efficiency, Yield

CLC Number:

S512. 1+1

WANG Tong-chao, QI Shuang,gUAN Xiao-kang, LI Xiao-yan, LI Qian, JIANG Yu-mei, WEI Li. Effect of Population Configuration on Water Use and Yield of Winter Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(2): 169-174. doi: 10.3969/j.issn.1000-7091.2013.02.030.

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