| 吴兵,谢亚萍,牛俊义,方子森,郭丽琢,剡斌.施磷对胡麻生长率和磷吸收利用率及其产量的影响[J].干旱地区农业研究,2016,34(1):114~119 |
| 施磷对胡麻生长率和磷吸收利用率及其产量的影响 |
| Effect of phosphorus fertilization on physiological parameters and yield of oilseed flax |
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| DOI：10.7606/j.issn.1000-7601.2016.01.18 |
| 中文关键词: 胡麻 施磷量 磷肥利用率 产量 |
| 英文关键词:oilseed flax phosphorus application phosphorus fertilizer use efficiency yield |
| 基金项目:现代农业产业技术体系建设专项(CARS-17-GW-9) |
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| 中文摘要: |
| 以胡麻“陇亚杂1号”为供试品种，研究了不同施磷水平（P2O5：0，75，150 kg·hm-2和225 kg·hm-2）对胡麻籽粒产量性状、灌浆时间、生物生长率、磷的吸收率、籽粒产量、产油量和磷肥利用率的影响及其与籽粒产量间的关系。结果表明，施磷使千粒重增加10.09%，单株籽粒重提高23.01%；灌浆时间延长7.62%；生物量生长率、经济生长率和籽粒生长率分别提高10.15%，15.60%和8.69%，但对胡麻每株蒴果数和每果籽粒数没有影响；磷的吸收率、磷的经济吸收率和籽粒磷的吸收率分别提高31.40%，37.84%和29.57%； 籽粒产量和油产量分别提高16.97%和17.93%；磷肥利用率随施磷量增加而减小；籽粒产量与经济生长率呈极显著正相关，与单株籽粒重、千粒重、灌浆时间、生物量生长率和籽粒生长率呈显著正相关。试验区施磷量（P2O5）75～150 kg·hm-2，可以实现胡麻高产和磷肥高效利用目的。 |
| 英文摘要: |
| A field experiment was conducted to determine the effect of different phosphorus rates (P2O5: 0, 75, 150 kg·hm-2 and 225 kg·hm-2) on grain yield components, gain filling, growth rate, phosphorus uptake rate, oil yield and phosphorus use efficiency. The results indicated no significant effect with respect to number of capsules per plant and number of seeds per capsule, while 1000-seed weight, seed weight per plant and seed filling period were obviously increased by 10.09%, 23.01% and 7.62%, respectively. And biomass growth rate, economic growth rate and seed growth rate, P uptake rate, economic P uptake rate, and seed P uptake rate were also increased by 31.40%,37.84% and 29.57%, respectively. Phosphorus use efficiency was reduced by increased phosphorus fertilization, in spite of increase in seed yield (16.97%) and oil yield (17.93%). Seed yield has significantly positive correlation with economic growth rate, seed phosphorus fertilizer weight per plant, 1000-seed weight, seed filling period, biomass growth rate, seed growth rate. For obtaining high production and efficient phosphorus fertilizer utilization in oilseed flax, optimal phosphorus application should be 75～150 kg·hm-2(P2O5) in Lanzhou experimental area. |
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