钙镁磷肥肥效的再探讨

• 作 者: 吕美林 鲁如坤
• 机 构: 中国科学院南京土壤研究所,中国科学院南京土壤研究所
• 出 处: 土壤通报
• 发表日期: 1985年01期
• 关键词: 石灰性土壤 酸性土壤 碱性土壤 豆科作物 水溶性磷 中性土壤 淹水条件 难溶性磷肥 细度 吸磷量

钙镁磷肥在我国己成功地使用20余年,在六十年代前期曾进行过大量研究.试验表明:在酸性土壤上,钙镁磷肥的肥效相当于或者略好于过磷酸钙.在碱性土壤上肥效低于过磷酸钙.我所在六十年代初对钙镁磷肥肥效的研究,除上述一般结论外,还认为在石灰性土壤上钙镁磷肥对豆科作物的肥效可以和过磷酸钙相近,而对小麦则只相当于过磷酸钙的80%左右.

Calcium magnesium phosphate fertilizer has been successfully used in our country for more than 20 years and a large number of researches have been conducted in the early 1960s.This experiment shows that the fertilizer efficiency of calcium magnesium phosphate fertilizer is equivalent to or slightly better than that of superphosphate fertilizer in acid soil, Fertilizer efficiency is lower than that of superphosphate .In my study in the early 1960s on the effectiveness of calcium magnesium phosphate fertilizer, in addition to the above general conclusion, but also that calcimimetics in calcareous soil on the leguminous crops fertilizer effect can be similar to the superphosphate , While wheat is only equivalent to about 80% of superphosphate.