【摘要】 在成都市新都区灰色潮土上采用完全设计和正交设计方法,进行中华红叶杨幼林施肥试验。结果表明:单一养分元素肥料施用效果K>N>P,肥料配合施用效果N+P+K>N+K>N+P、P+K,适宜的施肥配方为尿素150 g/株+过磷酸钙220 g/株+硫酸钾75 g/株。更多还原

【Abstract】 Using complete and orthogonal design, fertilization trials were conducted for the young growth of Populus deltoids cv. Zhonghua hongye in the fluviogenic soil in Xindu District, Chengdu City. The results showed that the application effect of the single nutrient elements ranked as K>N>P, and that of the fertilization combinations ranked as N +P +K >N +K >N +P, P +K. The optimum fertilization formula was urea [（NH₂）₂CO, 150 g/plant] + calcium superphosphate [Ca（H₂PO₄）₂·H₂O, 220g/plant] + potassium sulphate（K₂SO₄, 75 g/plant）.更多还原