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Effect of Phosphorus Fertilizer on Growth, Phosphorus Uptake, Seed Yield, Yield Components, and Phosphorus Use Efficiency of Oilseed Flax

文献类型： 外文期刊

作者： Xie, Yaping 1 ; Niu, Xiaoxia 3 ; Niu, Junyi 2 ;

作者机构： 1.Gansu Acad Agr Sci, Crop Res Inst, Lanzhou 730070, Peoples R China

2.Gansu Agr Univ, Coll Agron, Lanzhou 730070, Peoples R China

3.Gansu Acad Agr & Engn Technol, Wuwei 733006, Peoples R China

4.Key Lab Aridland Crop Sci Gansu Prov, Lanzhou 730070, Peoples R China

期刊名称：AGRONOMY JOURNAL （ 影响因子：2.24； 五年影响因子：2.829 ）

ISSN： 0002-1962

年卷期： 2016 年 108 卷 3 期

页码：

收录情况： SCI

摘要： Improving the seed yield of oilseed flax (Linum usitatissimum L.) is an important issue to meet the growing demand for this crop. This study was conducted to determine whether various aspects of oilseed flax growth could be manipulated through P under the arid and semiarid conditions in China. The effects of P on oilseed flax phenological stages, seed yield, yield components, biomass growth rate (BGR), and phosphorus uptake rate (PUR) were investigated at Zhangjiakou, China. The Baxuan 3 flax cultivar was grown on a P deficient soil, to which four rates of P fertilizer were applied (0, 15, 30, and 45 kg P ha(-1)). Our results indicated that the application of P increased the number of capsules per plant, seed weight, seed yield, and the oil yield by 20, 19, 44, and 56%, respectively, compared with the 0P control treatment. At 30 kg P ha(-1), the apparent phosphorus recovery efficiency (APE) was higher than those at 45 kg P ha(-1). However, at 15 kg P ha(-1), agronomic efficiency (AE) was higher than those at 30 and 45 kg P ha(-1). The seed-filling period, the growth rates (biomass, economic, and seed) and the P uptake rates (biomass, economic, and seed) were significantly improved by P application. A linear positive relationship was found between seed yield and number of capsules per plant, seed weight, growth rates, and P uptake rates. The results suggest the addition of P fertilizer enhanced growth and P uptake, and increased seed yield of oilseed flax.

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