彭祥燕, 马慧慧, 何雨婷, 刘燃, 梁红艳, 朱永兴, 朱学栋, 刘奕清. 生姜||柑橘间作对盛夏生姜生长及光合特性与产量的影响[J]. 中国生态农业学报 (中英文), 2024, 32(4): 1−12. DOI: 10.12357/cjea.20230604
引用本文: 彭祥燕, 马慧慧, 何雨婷, 刘燃, 梁红艳, 朱永兴, 朱学栋, 刘奕清. 生姜||柑橘间作对盛夏生姜生长及光合特性与产量的影响[J]. 中国生态农业学报 (中英文), 2024, 32(4): 1−12. DOI: 10.12357/cjea.20230604
PENG X Y, MA H H, HE Y T, LIU R, LIANG H Y, ZHU Y X, ZHU X D, LIU Y Q. Effects of ginger-citrus intercropping on ginger growth, photosynthesis traits and yield[J]. Chinese Journal of Eco-Agriculture, 2024, 32(4): 1−12. DOI: 10.12357/cjea.20230604
Citation: PENG X Y, MA H H, HE Y T, LIU R, LIANG H Y, ZHU Y X, ZHU X D, LIU Y Q. Effects of ginger-citrus intercropping on ginger growth, photosynthesis traits and yield[J]. Chinese Journal of Eco-Agriculture, 2024, 32(4): 1−12. DOI: 10.12357/cjea.20230604

生姜||柑橘间作对盛夏生姜生长及光合特性与产量的影响

Effects of ginger-citrus intercropping on ginger growth, photosynthesis traits and yield

  • 摘要: 间作种植可充分利用土地空间、利于光资源的利用和作物产量的提高。为探明生姜||柑橘间作对生姜在炎热夏季条件下的生长、光合及产量的影响, 于湖北省荆州区长江大学农业科技园进行两年(2021年和2022年)定点田间试验, 测定3个种植模式下 生姜单作未遮荫(CK)、生姜单作遮荫(CK1)及生姜||柑橘间作(CI)生姜植株生长特性、叶片灼伤、关键光合酶、光合色素、叶绿素荧光参数、渗透调节物质、抗氧化酶活性和产量的变化特征。结果表明: 与CK相比, CI处理下生姜冠层光照强度、植株叶片灼伤指数分别显著降低55.40%~55.80%和61.14%~70.20% (P<0.05), 光合关键酶活性、光合色素、净光合速率和最大光化学效率分别显著增加22.34%~50.55%、14.36%~50.00%、51.04%~70.64%和5.56%~7.79% (P<0.05), 生姜产量显著提高23.28%~23.77%, 达到63.00~66.08 t·hm−2 (P<0.05)。与CK1相比, CI处理下生姜冠层光照强度和植株叶片灼伤指数、净光合速率和产量均无显著差异, 但是关键光合酶活化酶活性、光合色素和最大光化学效率在部分年份分别显著增加26.88%、7.74%和2.47% (P<0.05)。因此, 生姜||柑橘间作模式能降低炎热气候下的生姜冠层光照强度, 减轻灼伤程度, 对其生长、光合性能及产量的提高有促进效应, 达到与单作遮荫相当的效果。该研究结果为柑橘林下推广应用生姜||柑橘间作种植模式提供了理论参考。

     

    Abstract: Intercropping is a traditional cultivation system wherein two or more plant genotypes are grown together for a certain period. Intercropping not only facilitates full use of the available land space, but also contributes to optimizing the light environment and improving yields. In this study, we conducted a field experiment to examine the effects of different cropping patterns of ginger on the growth, photosynthesis and yield of ginger under hot summer conditions in 2021 and 2022, based on the following three treatments: unshaded ginger monoculture (CK), shaded ginger monoculture (CK1), and intercropping of ginger and citrus (CI). To determine the effects of intercropping with citrus, the ginger plant growth characteristics, leaf burn, photosynthetic key enzymes, photosynthetic pigments, chlorophyll fluorescence parameters, osmoregulatory substances, antioxidant enzyme activity, and yield under different cropping patterns were investigated. The results revealed that compared with CK treatment, the CI treatment was associated with a significant reduction in canopy light intensity and plant leaf burn index by 55.40%−55.80% and 61.14%−70.20%, respectively (P<0.05), whereas there were significant increases in the activities of key photosynthetic enzymes, photosynthetic pigment, net photosynthetic rate, and maximum photochemical efficiency of 22.34%−50.55%, 14.36%−50.00%, 51.04%−70.64%, and 5.56%−7.79%, respectively (P<0.05). Furthermore, the CI treatment contributed to the highest ginger yield (63.00−66.08 t·hm−2), which represented a significant increase of 23.28%−23.77% (P<0.05) when compared with that obtained under the CK treatment. Moreover, we detected no significant differences between the CK1 and CI treatments with respect to light intensity, leaf burn index, net photosynthetic rate, or yield. However, compared with the CK1 treatment, the CI treatment significantly enhanced the activities of key photosynthetic enzymes, photosynthetic pigment contents, and maximum photochemical efficiency by 26.88%, 7.74%, and 2.47%, respectively (P<0.05). In conclusion, intercropping with citrus can reduce light intensity at the ginger canopy during the hot season, reduce the degree of leaf burn, improve photosynthetic performance, and increase ginger yield. Among the three assessed planting patterns, ginger-citrus intercropping was identified as the most effective system, which contributed to achieving the highest crop yield, provided beneficial environmental conditions for ginger growth, and highlighted the production advantages of ginger under the citrus canopy.

     

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