套作玉米对草莓生长生理特性及其产量和品质的影响

该研究采用草莓玉米套作和草莓连作方式，对草莓的生长、生理及其产量和品质进行比较分析，为生产中克服草莓连作障碍提供理论依据。结果表明：（1）套作条件下草莓的株高、根长、茎粗和整株重量等营养生长指标均显著高于相应的连作模式。（2）与连作相比，套作可提高草莓植株的总超氧化物歧化酶（SOD）、乙醇脱氢酶（ADH）和过氧化物酶（POD）活性，同时可提高草莓植株根系和叶片的可溶性糖含量，使根系丙二醛含量维持在较低水平，保证草莓植株良好生长。（3）与草莓连作相比，套作玉米使秋季草莓苗的定植入田死苗率降低28.8%，加快缓苗速度，且单株保持良好长势和后期正常坐果。（4）套作玉米能够显著提高草莓果实的硬度、单果重及单株产量，但对果实可溶性固形物无显著影响。研究认为，草莓套作玉米能够克服草莓连作障碍，促进草莓植株的营养生长，增强草莓植株抵御逆境胁迫的能力，提高产量和品质。

Growth, Physiology, Yield and Quality Changes of Strawberry Intercropping with Corn

In this paper, the strawberry plant growth, physiology, yield and quality were analyzed and compared under the condition of intercropping with corn and continuous cropping, with a purpose of providing the theoretical basis for overcoming the continuous cropping obstacles in strawberry production. Results showed that: (1) the strawberry growth index of intercropping with corn was significantly higher than that of continuous copping, such as the plant height, the root length, the stem diameter, and the weight of strawberry plant. (2) Compared with continuous cropping, the tillage pattern of intercropping with corn could increase the protective enzyme activities of superoxide dismutase, ethanol dehydrogenase and peroxidase. In addition, intercropping with corn could increase soluble sugar content in roots and leaves of strawberry plant, respectively, and make the malondialdehyde content in a relative low level, simultaneously. It means that intercropping with corn could ensure the strawberry plant growth well. (3) Intercropping with corn could reduce the rate of strawberry plants by 28.8%, when they were transplanted at the beginning of autumn, and these transplanted strawberry could be quickly recovered in the field of intercropping with corn, which compared with continuous cropping. (4) The strawberry plant, which intercropping with corn, has the ability to significantly increase their fruit hardness, the single fruit weight, and the yield of single strawberry plant concurrently, but has no significant effect on the soluble content. We can summarize that strawberry continuous cropping obstacles could be overcome by intercropping with corn, and the strawberry plant vegetative growth and the resistance to stress were improved, and the fruit yield and quality were also increased under the intercropping with corn, respectively.