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紫花地丁（ViolayedoensisMakino）具有较高的观赏价值，有较强的抗逆性．本试验旨在选用紫花地丁作为缀花草坪植物．对其进行逆境指标研究的试验证明：紫花地丁践踏后恢复再生能力较强，能抗8．78kg／cm2的土壤坚实度，土壤含水量在5％～8％仍能生长．土壤含盐量0．3％时生长未受影响，并能耐5d以上的水淹，比较接近草坪品种选育的指标．
Viola yedoensis Makino has high ornamental value and strong resistance. The purpose of this experiment is to use Viola yedo as a flower lawn plant. Experiments on its adversarial index proved that: Viola tarda was more capable of resuming regeneration after being trampled, able to resist soil solidity of 8.78kg / cm2 and soil moisture content of 5% -8%. Soil salt content of 0.3% growth was not affected, and resistant to flooding more than 5d, relatively close to the lawn breed breeding index.