In order to determine the effects of residual nitrogen applied to summer maize on the soil and plant Nnutrition and grain yield of the following winter wheat, in summer season, three rates of nitrogen fertilizer ( i. e. 0,150, 225,300 kg/hm2) with the slow release nitrogen fertilizer were applied,winter wheat cultivar Qingmai 6 was used for this study. Compared with control ( without N fertilizer application) , the application of N fertilizer to summer maize increased the soil total N content in the 0 - 80 cm soil profiles during the whole wheat season,especially when N application reached 300 kg/hm2, surplus N was left in the soil in following wheat season. With the increased N supply, the N accumulation aboveground in wheat was also increased,while, the rate of nitrogen translocation to grain increased firstly and then decreased. The application of N to summer maize had a remarkable effect on the dry matter and grain yield of following wheat,and both reached the high value when the N application was 225kg/hm2,while surplus N application induced the decreased yield and dry matter of wheat.
Tong Xingxing
,
Zhang Hongsheng
,
Yang Jinzhong
,
Jiang Wen
. Effect of Residual Nitrogen Applied to Summer Maize on the N Supply and Grain Yield of the Following Winter Wheat[J]. Acta Agriculturae Boreali-Sinica, 2013
, 28(3)
: 171
-174
.
DOI: 10.3969/j.issn.1000-7091.2013.03.030
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