连作和轮作对谷子叶片构型和叶绿素、氮素含量的影响

研究旨在提升谷子连作障碍认知度,为谷子轮作制度和可持续生产提供理论依据和技术支持。采用周年单序轮作处理和连作处理相比较的方法,研究其对旱地谷子叶片构型、叶绿素和氮素含量的影响。结果表明,连作处理降低谷子个体的叶面积和群体的叶面积指数,严重影响谷子叶片的生长发育;降低谷子叶片的叶绿素和氮素含量,影响谷子叶绿体的发育。谷子连作种植是不科学的田间生产方式,应选择合理的年际轮作制度,以实现谷子高产稳产。

Effect of Continuous and Rotation Cropping on Leaf Shape Characteristics,Chlorophyll Content and N Content of Leaves of Millet

The article aims to enhance the cognition of continuous cropping obstacles and provide theoretical support for the millet rotation system and sustainable production. Through the comparison of the crop rotation for one year and continuous cropping, we studied the effect on the leaf shape, leaf content of chlorophyll and nitrogen of dry-land millet. It shows that the continuous cropping could reduce leaf area for both the individual millet and the group, which seriously influences the leaf growth of millet, depresses the content of nitrogen and chlorophyll and the chloroplast development. Therefore, the continuous cropping is not a proper practice for millet production, and suitable crop rotation methods should be selected to achieve stable and high yield of millet.