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首页> 外文OA文献 >Do Soil Warming and Changes in Precipitation Patterns Affect Seed Yield and Seed Quality of Field-Grown Winter Oilseed Rape?
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Do Soil Warming and Changes in Precipitation Patterns Affect Seed Yield and Seed Quality of Field-Grown Winter Oilseed Rape?

机译：土壤变暖和降水模式的变化会影响种子产量和领域种植冬季油菜籽的种子质量吗？

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摘要

Increasing air and soil temperatures and changes in precipitation patterns as consequences of climate change will affect crop production in agricultural ecosystems. The combined effects of soil warming and altered precipitation on the productivity and product quality of oil crops are not yet well studied. Winter oilseed rape (OSR) (Brassica napus L., cv. Mercedes) was field-grown under elevated soil temperature (+2.5 °C), reduced precipitation amount (−25%), reduced precipitation frequency (−50%) both separately and in combination in order to investigate effects on crop development, seed yield, and seed quality. Soil warming accelerated crop development during early plant growth and during spring. At maturity, however, plants in all treatments were similar in quantitative (aboveground biomass, seed yield) and qualitative (protein and oil content, amino acids, fatty acids) parameters. We observed the long-term effects of the precipitation manipulation on leaf size, leaf senescence and biomass allocation. Seed yield was not affected by the altered climatic factors, perhaps due to adaptation of soil microorganisms to permanent soil warming and to relatively wet conditions during the seed-filling period. Overall, OSR performed well under moderate changes in soil temperature and precipitation patterns; thus, we observed stable seed yield without negative impacts on nutritive seed quality.
机译：随着气候变化的后果，增加空气和土壤温度和降水模式的变化将影响农业生态系统中的作物产量。还没有很好地研究土壤加热和改变降水改变对生产力和产品质量的综合影响。冬季油菜（OSR）（芸苔）（芸苔，CV。梅赛德斯）在升高的土壤温度（+ 2.5℃）下，降低沉淀量（-25％），分别降低降水量（-50％）并组合旨在调查作物发展，种子产量和种子质量的影响。土壤温暖在早期植物生长期间加速作物发展。然而，在成熟时，所有治疗中的植物在定量（地上生物质，种​​子产量）和定性（蛋白质和油含量，氨基酸，脂肪酸）参数中类似。我们观察了降水操作对叶片大小，叶片衰老和生物质分配的长期影响。种子产量不受活泼因素改变的影响，也许是由于土壤微生物适应永久性土壤升温并在种子填充期间对相对潮湿的病症。总体而言，OSR在土壤温度和降水模式的中等变化下进行了良好;因此，我们观察到稳定的种子产量而不会对营养种子质量产生负面影响。

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