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通过大田试验,研究了增施钙镁磷肥、过磷酸钙及与生物有机肥混施共6种调控措施对强酸性高硒茶园土壤基本化学性质、土壤有效硒和茶叶中硒质量比的调控效果。结果表明,不同磷肥及不同用量处理对土壤有效硒质量比增加均有效果,高用量的3种处理(钙镁磷肥高用量与生物有机肥混施、钙镁磷肥高用量和过磷酸钙高用量)效果好于正常用量的处理(钙镁磷肥正常用量与生物有机肥混施、钙镁磷肥正常用量、过磷酸钙正常用量),且用量相同的情况下,伴有生物有机肥的磷肥处理效果最好。增施磷肥调控均不同程度地增加了茶叶硒质量比,6种处理的增幅均达到极显著水平(p<0.01)。
Field experiments were conducted to study the effects of six control measures, including the addition of calcium-magnesium phosphate fertilizer, superphosphate fertilizer and bio-organic fertilizer, on the basic chemical properties of soils in high-acidity and high-selenium tea gardens and the selenium ratio in soil-available selenium and tea . The results showed that different treatments of phosphate and different dosages had effect on the increase of available selenium in soil, and the three treatments with high dosages (high dosages of calcium magnesium phosphate fertilizer and biological organic fertilizer, high dosages of calcium magnesium phosphate and high dosages of superphosphate ) Effect is better than the normal amount of treatment (normal dosage of calcium magnesium phosphate fertilizer and biological organic fertilizer mixed, normal dosage of calcium magnesium phosphate, normal dosage of superphosphate), and the same dosage, the effect of phosphate fertilizer treatment with bio-organic fertilizer the best. The application of P fertilizer increased the selenium content of tea to different extents, and the increase of 6 treatments reached extremely significant level (p <0.01).