| 不同测墒补灌处理对冬小麦产量及光合特性的影响 |
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| 引用本文： | 胡明芳,赵振勇,张科. 不同测墒补灌处理对冬小麦产量及光合特性的影响[J]. 农学学报, 2020, 36(4): 1-6. DOI: 10.11923/j.issn.2095-4050.cjas20191000219 |
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| 作者姓名： | 胡明芳 赵振勇 张科 |
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| 作者单位： | 1. 山东省烟台市农业科学研究院,山东烟台 265500;2. 莱西市农业农村局,山东莱西 2666032 |
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| 基金项目： | 国家重点研发计划项目“新疆干旱区盐碱地生态治理关键技术研究与集成示范”(2016YFC0501403);克拉玛依市科技局项目“盐生植物筛 选栽培技术及在肉羊生产中的利用研究”(sk2016-05);新疆油田公司科技项目“碳汇林基地盐碱地种植改良技术试验与推广”。 |
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| 摘 要： | 为了明确测墒补灌对冬小麦产量和干物质积累的影响,以高产优质冬小麦‘烟农999’为材料,试验设置5个水分处理：W0全生育期不浇水,Wck为传统灌溉处理（对照）,W70、W75、W80为测墒补灌处理,于拔节期和开花期分别补灌至土壤相对含水量的70%、75%、80%。结果表明：（1）各处理之间相比较,W75籽粒产量和水分利用效率最高,分别为11438.85 kg/hm 2、25.78 kg/(hm 2·mm),比传统灌溉处理提高了12.12%、21.2%。（2）W75处理开花期和灌浆期的叶面积指数、灌浆期的旗叶净光合速率、开花期干物质转移率、灌浆期营养器官对籽粒的贡献率显著高于其他处理。综合分析,本试验条件下W75是‘烟农999’获得高产高水分利用效率的灌溉方案。
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| 关 键 词： | 小麦 产量 水分利用效率 光合特性 |
| 收稿时间： | 2018-10-08 |
| 修稿时间： | 2018-11-01 |
Effect of Annual Straw Returning Amount on Growth and Yield of Double Cropping Rice in South China |
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| Yan Meiling,Zhao Ming,Cui Mingzhuo,Xin Qingguo,Sun Xiaohui,Wang Jiangchun,Yin Yan. Effect of Annual Straw Returning Amount on Growth and Yield of Double Cropping Rice in South China[J]. Journal of Agriculture, 2020, 36(4): 1-6. DOI: 10.11923/j.issn.2095-4050.cjas20191000219 |
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| Authors: | Yan Meiling Zhao Ming Cui Mingzhuo Xin Qingguo Sun Xiaohui Wang Jiangchun Yin Yan |
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| Affiliation: | 1. Yantai Academy of Agriculture Science, Yantai 265500, Shandong, China;2. Agriculture and Rural Affairs Bureau of Laixi, Laixi 2666032, Shandong, China |
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| Abstract: | To explore the straw returning amount suitable for high and stable yield of double cropping rice in South China, the effects of rice straw returning amount on tiller number, plant weight, dry matter accumulation and early and late rice yield were studied through a 2 years (2016 to 2017) field experiment. 5 different ratios of straw returning were set up in the experiment: no straw addition (CK), 25% straws returning (S1), 50% straws returning (S2), 75% straws returning (S3) and 100% straws returning (S4). The results showed that 100% straws returning inhibited early rice tillering and promoted late rice tillering; 25% , 50% and 75% straws returning treatments had no significant effect on early and late rice in early growth period, but showed positive effect at the middle and late growth stages. The late rice plant height of 75% and 100% straw returning treatments were significantly higher than that of no straw addition treatment, with the average increase of 8.15 cm. Compared with no straw addition, the dry matter accumulation of early and late rice under all straw returning treatment increased, and the difference of 50% straw returning treatment in early rice was significant (P<0.05), which was 8.0% higher than that of CK; 50%, 75% and 100% straw returning treatments averagely increased the dry matter accumulation by 13.3%, and the difference was significant (P>0.05); however, no difference of dry matter accumulation was observed between different amounts of straw returning. Both the yield of early and late rice in straw returning treatments were higher than that of CK, among them, 50% straws returning treatment had the highest early rice yield, with the increase of 6.92%; for late rice, 50%, 75% and 100% straw returning treatments increased the yield by 5.33%, 7.50% and 8.23%, respectively; however, no difference was observed between different amounts of straw returning treatments in both early and late rice. Under this experiment, rerunning 50% straw is the best for increasing early rice yield while 100% is the best for late rice in short time. The long-term effect of straw returning on rice yield needs to be further explored. |
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| Keywords: | double cropping rice in south China straw return retuning amounts growth yields components |
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