lawny

1.The sludge application constrained under the rate of 4.8kg/m2 for woodland and 2.4kg/m2 for lawn, has good bio-effects for the growth of metasequoia and lawny-grass.

4.含铝污泥施用量限制在林地4.8kg/m2、草地2.4 kg/m2范围内，对水、草坪草生长具有良好生物效应。