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中国油料作物学报 ›› 2014, Vol. 36 ›› Issue (4): 483-.doi: 10.7505/j.issn.1007-9084.2014.04.008

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Effects of nitrogen, phosphorus, potassium fertilizers on seed yield and nutrient uptake and utilization of rapeseed

  

  1. College of Resources and Environment, Huazhong Agricultural University, Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Wuhan 430070, China
  • Online:2014-08-28 Published:2014-11-03

Abstract:

For effective fertilization, field trial was conducted to study the (N, P and K) effects of fertilizers on seed yield and N, P, K utilization of 6 Brassica napus L. cultivars [Qinyou 11 (QY11), Zhongnongyou 2008 (ZNY2008), Zhongyouza 11 (ZYZ11), Xiangyou 17 (XY17), Zheyou 601 (ZY601) and Huyouza 1 (HYZ1)], and to compare the differences among the rapeseed cultivars. Results showed that yields were significantly different among cultivars under the same fertilization treatments. The maximum differences under PKB, NKB, NPB and NPKB treatments were 385, 244, 759 and 720 kg/hm2 respectively. The variable coefficients were 18.1%, 25.5%, 16.4% and 11.0% respectively. Application of N, P, K significantly improved yield and corresponding nutrient uptakes in cultivars. Their yields increased 1 101-2 012, 1 681-2 459 and 293-1 567 kg/hm2 respectively. And their N, P, K uptakes increased 63.0-113.2, 17.2-23.8 and 94.1-166.3 kg/hm2 respectively. Cultivars fertilizer efficiencies also showed great differences. The same cultivar had the same response to these 3 fertilizers, while Qinyou 11 was the most sensitive and Xiangyou 17 was the most tolerant to nutrient deficiency among the 6 cultivars.

Key words: Rapeseed (Brassica napus L.), Cultivars, Fertilizer application, Seed yield, Nutrient uptake, Fertilizer efficiency