【摘要】 奥普尔是一种高浓缩的有机腐殖酸液肥，在杂交桑上应用，效果显著。试验证明，使用浓度为400倍液，喷施叶片2～3次，其叶片浓绿，桑叶产量高，品质好。测定桑叶营养成分、1～4龄眠要体重及全茧量等项指标，均比对照有明显提高。更多还原

【Abstract】 OPL is a highly concentrated liquid organic humic acid fertillizer. Distinctive effects have been shown after OPL was applied to hybrid mulberry. The tests showed that the mulberryleaves, upon which having been sprayed with 1: 400 OPL suspension, turned dark green withbetter quality and higher yield. Indexes, such as leaves nutrient, weight of silkworms for 1-4 period and weight of a silkworm cocoon, were raised in comparison with the control.更多还原