缙云山地区黄脊竹蝗防治措施研究

Study on culture technics of medicinal safflower

通过３年的调查研究，掌握了黄脊竹蝗的生活习性．以系统工程宏观控制理论为指导，采取生物防治、人工挖卵、保护利用天敌、化学防治等综合措施，防治黄脊竹蝗危害面积达１０６６ｈｍ２，虫口密度从平均３５８头／株下降至１４头／株，虫口减退率９９６％，挽回竹材损失４８万吨，价值９６０万元．

The study on the technics of medicinal safflower has been carried out for increasing the dry flower yield of medicinal safflower.The optimal sowing date,the rational planting density and the proper NPK requirements for obtaining the above 255kg/hm 2 dry flower yield was selected according to this study.It can increase dry flower yield of medicinal safflower to apply Mo 7O 24 ·4H 2O,H 3BO 3 and NAA to soaking seed before sowing.