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一、用硬聚氯乙烯箱,规格50×30×15厘米,箱底铺2～3厘米卵石和9～10厘米锯末。二、营养液:采用改良的Addoms营养液,配方为:硫铵74.3克,磷酸二氢钾87克,硫酸镁33克,柠檬酸铁5克,硫酸锰0.113克,硼砂0.26克,兑水100斤。pH值6～6.4。三、3月28日将经过催芽的油松种子带芽点播,株行距3×3厘米,每穴播3粒种子。播后上复锯末1～1.5厘米,浇透水。种芽扎根后,适当去掉上复的部分锯末,长出幼苗,
First, with a rigid PVC case, size 50 × 30 × 15 cm, shop at the end of 2 ~ 3 cm pebbles and 9 ~ 10 cm sawdust. Second, the nutrient solution: The use of a modified Addoms nutrient solution, the formula is: ammonium sulfate 74.3 grams, 87 grams of potassium dihydrogen phosphate, 33 grams of magnesium sulfate, iron citrate 5 grams, 0.113 grams of manganese sulfate, borax 0.26 grams, watered 100 jin. pH 6 ~ 6.4. Third, March 28 will be after germination of pine seeds with bud on demand, spacing of 3 × 3 cm, each hole sowing 3 seeds. After the last sawing broadcast on the end of 1 to 1.5 cm, drenched water. After the seedling roots, appropriate removal of the sawdust on the complex, grow seedlings,