Studies on the Soil Nitrate Content and Nitrogen Balance in Winter Wheat Plants under Limited Irrigation Condition

doi:10.3321/j.issn:1000-7091.2003.02.014

Abstract

Abstract: T he nitrate contents in 1 m soiLprofile at stem elongation stage were mainly affected by the nitro-gen amount applied as basaLdressing.And the nitrate contents in soiLprofile at blooming stage and maturing stage were related to the nitrogen amount applied as top dressing at stem elongation stage, as welLas the nitrogen amount of basaLdressing.The differences of nitrate distribution between the treatments at stem elongation stage mainly observed in 0-60 cm soiLprofile, while the differences at blooming stage and maturing stage observed in whole 1 m soiLprofile.Finally, it is found that the apparent nitrogen balance in soi-Lwheat plant system could be maintained when 144-213 kg/ha was applied, but treatment which whole 144 kg/ha was applied as basaLdressing had a highest absorption ratio, and a lowest residuaLratio.

Key words: Winter wheat, Fertilizing system, Nitrate, Nitrogen Fertilizer, Limited irrigation

CLC Number:

S512.01

LI Jian min, LI Shi juan, ZENG Chang li, ZHOU Dian xi. Studies on the Soil Nitrate Content and Nitrogen Balance in Winter Wheat Plants under Limited Irrigation Condition[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(2): 51-55. doi: 10.3321/j.issn:1000-7091.2003.02.014.

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