| 氮肥基追比对滴灌春小麦群体质量及产量的影响 |
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| 引用本文：黄艺华，蒋桂英，王海琪，刘钰婷，车子强.氮肥基追比对滴灌春小麦群体质量及产量的影响[J].西北农业学报,2021,30(6):807~818 |
| DOI:10.7606/j.issn.1004-1389.2021.06.003 |
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| 基金项目:国家自然科学基金 (31760346)。 |
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| 中文摘要:选取春小麦品种‘新春6号’和‘新春37号’，采用裂区试验设计，设置0∶0、2∶8、3∶7、4∶6、5∶5共5个氮肥基追比处理，比较分析两个小麦品种的茎蘖数、茎蘖成穗率、叶面积指数、粒叶比、干物质积累与转运特性以及产量及产量构成因素的差异。结果表明，在氮肥不同基追比处理下，‘新春6号’和‘新春37号’的茎蘖数、茎蘖成穗率、叶面积指数、粒叶比均在3∶7处理下最优，且呈现3∶7＞4∶6＞5∶5＞2∶8＞0∶0趋势；两个品种茎鞘和叶片花前干物质转运量、花后干物质积累量显著高于0∶0处理，而对籽粒贡献率则表现相反。在3∶7处理下，‘新春6号’和‘新春37号’的产量分别为7 304.45 和7 546.17 kg·hm-2。最优氮肥基追比例为3∶7。 |
| 中文关键词:春小麦 氮肥 基追比例 群体质量 产量 |
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| Effect of Base-topdressing Ratio of Nitrogen Fertilizer on Population Quality and Yield of Spring Wheat under Drip Irrigation |
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| Abstract:Spring wheat varieties ‘XC 6’ and ‘XC 37’ were selected and the split plot experiment design was used in this paper.Five nitrogen fertilizer base-topdressing ratios ( 0∶0,2∶8,3∶7,4∶6, 5∶5) were set up to compare and analyze the differences of tiller number, tiller spike rate, leaf area index, grain-leaf ratio, dry matter accumulation and transportation characteristics, yield and yield components between the two wheat varieties.The results showed that the numbers of tillers, panicle forming rate of tillers, leaf area index and grain leaf ratio of ‘XC 6’ and ‘XC 37’ were the best under the treatment of 3∶7, and it showed the trend of 3∶7> 4∶6 > 5∶5 > 2∶8 > 0∶0; the dry matter transport capacity of stem sheath and leaf before anthesis, and dry matter accumulation after anthesis of the two varieties were significantly higher than those of the treatment of 0∶0.However,the contribution rate to grain was opposite.The yields of ‘XC 6’ and ‘XC 37’ were 7 304.45 kg·hm-2 and 7 546.17 kg·hm-2 respectively under the treatment of 3∶7. The optimum ratio of base to topdressing was 3∶7. |
| keywords:Spring wheat Nitrogen fertilizer Base-topdressing rate Population quality Yield |
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