Effect of winter sown Chinese vetch on soil enzyme activity in calcarious dirt soil is studied.
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2. 研究结果表明:土壤含铜量过高,对紫云英造成危害;
The research results show that too high copper content in the soil will do damage to Milk Vetch.
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3. 对鹰嘴紫云英抗性系、半日花、霸王三种植物进行了原生质体分离和培养条件的研究。
The conditions of isolation and culture of protoplasts from resistant Astragalus cicer L. cell line, Helianthemum Songaricum Schrenk and Zygophyllum xanthoxylum were studied.
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4. 黑麦草的碳蓄积量显著高于紫云英和油菜,各覆盖作物处理碳蓄积量均显著高于冬闲田。
Carbon fixation in every cover crop treatment is higher than that of winter fallow cropland.