前言在草炭混合基质中使用吸水剂在国外已经很普遍,目的是为了增加基质的持水力,促进栽培作物的生长。特别是草炭基质在风干过度时,极难吸水,甚至整个生长季会保持干燥状态,影响栽培效果,使用吸水剂更加重要,同时由于加入了吸水剂,可以节省灌水用量。白云石粉做为一种调节基质酸碱度和补充钙、镁营养的来源的物质,在国外 Preface The use of water-absorbing agents in peat-mixed matrices has become widespread abroad, aiming at increasing the water holding capacity of matrices and promoting the growth of cultivated crops. In particular, when the peat substrate is over-dried, it is extremely difficult to absorb water, and even the whole growing season will remain in a dry state, affecting the cultivation effect. The use of a water-absorbing agent is even more important. At the same time, the amount of irrigation water can be saved by adding the water-absorbing agent. Dolomite powder as a regulator of matrix pH and calcium supplements, magnesium source of nutrients in foreign countries