| 潮土区灌浆水和施磷对冬小麦光合作用和产量的影响 |
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| 引用本文： | 吴克宁,赵彦锋,吕巧灵,李玲.潮土区灌浆水和施磷对冬小麦光合作用和产量的影响[J].植物营养与肥料学报,2002,8(4):428-434. |
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| 作者姓名： | 吴克宁 赵彦锋 吕巧灵 李玲 |
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| 作者单位： | 1.河南农业大学农学院土壤与农业化学系 河南郑州450002 |
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| 摘 要： | 利用防雨微区试验,研究了灌浆水和施磷对缺磷潮土区冬小麦灌浆期光合速率、荧光动力学参数、灌浆过程和产量等的影响。结果表明,全生育期不灌水,灌浆期冬小麦光合作用将受到气孔胁迫,光合速率下降,但水分利用效率提高;灌浆水提高小麦的光合速率和表观量子效率,在同样土壤水分条件下,小麦的光合速率和表观量子效率随施磷量的增加而提高。灌水处理小麦的PSⅡ、Fv/Fm较大,NPQ较小。水、磷都能促进小麦灌浆,提高小麦千粒重,其中磷的作用尤其重要。施磷水平越高,灌浆强度越大,灌浆水对子粒灌浆促进作用也越大。施磷处理的株高、穗长、穗粒数较大,成穗数提高,最终产量受施磷水平影响更为明显。经济系数有随供水和施磷水平提高而降低的趋势。从节水角度,在潮土区,施足磷肥有重要意义。
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| 关 键 词： | 潮土 灌浆水 施磷水平 光合效率 |
| 文章编号： | 1008-505X(2002)04-0428-07 |
| 修稿时间： | 2001年11月26 |
Effect of irrigation during grain filling stage and applying phosphate on the photosynthetic efficiency and yield of winter wheat in the fluvo-aquic soil area |
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| WU Ke ning,ZHAO Yan feng,Lü Qiao ling,LI Ling.Effect of irrigation during grain filling stage and applying phosphate on the photosynthetic efficiency and yield of winter wheat in the fluvo-aquic soil area[J].Plant Nutrition and Fertilizer Science,2002,8(4):428-434. |
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| Authors: | WU Ke ning ZHAO Yan feng Lü Qiao ling LI Ling |
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| Affiliation: | 1.Dept. of soil and Agro Chemical;Henan Agricultural University;Zhengzhou 450002;China |
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| Abstract: | Using waterproof installation, a study was carried out to test the effects of P and irrigation during grain filling stage on the photosynthetic rate, the parameters of chlorophyll fluorescence induction kinetics,the grain filling process and the yield of winter wheat in the fluvo aquic soil area where available P is deficient The results showed that under the condition of no irrigation during the whole life of winter wheat, the opening and closing of stoma were stressed because of water deficiency during the grain filling stage,the photosynthetic rate of winter wheat declined, while water use efficiency rose. Irrigation improved the photosynthetic rate and the apparent photosynthesis quantum efficiency Under the same water supply level, light response of photosynthesis and the apparent photosynthesis quantum efficiency grew with P increase Winter wheat being irrigated possessed higher values of ΦPSII and Fv/Fm,and lower value of NPQ The rate of grain filling has a positive correlation with P and water The effect of irrigation on accelerating the grain filling increased with fertilizer P supply rising P also increased plant height, spikes number, spikes length and panicle number The effect of P on the yield of winter wheat is more remarkable than that of irrigation in this experiment Economic coefficient declined with the improvement of water supply level and P rate This study suggests that to save water it is necessary to apply plenty of fertilizer P for winter wheat in fluvo aquic soil area |
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