一、塘泥的性质和种类塘泥是很好的农家肥料。一般每100斤塘泥中约含氮0.33斤,磷0.39斤,钾0.34斤,有机质3斤。按照合氮量折算,每100斤塘泥相当于豆饼4.7斤。由于塘泥肥效缓慢,施一次可延续3—5年或更长一些。塘泥由于形成的方式不同,含氮量很不一致, First, the nature and type of pond mud pond is a good farmhouse fertilizer. Generally about 100 pounds of mud in the pond about 0.33 kg of nitrogen, 0.39 kg of phosphorus, 0.34 kg of potassium, 3 kg of organic matter. Calculated in accordance with the amount of nitrogen, equivalent to every 100 pounds of jelly pond meal 4.7 pounds. Due to the sluggishness of pond mud, it can last 3-5 years or longer. Pond mud due to the formation of different ways, nitrogen content is very inconsistent,