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莱阳市是花生主要产区,常年种植面积2.13万hm2。蛴螬是金龟甲幼虫的统称。花生蛴螬是花生上的主要害虫。据统计本市花生蛴螬年发生面积1万hm2,其中重发生面积0.33万hm2,每年防治面积约0.93万hm2,挽回花生损失520万kg。由于种植结构调整,耕作栽培技术变化,土壤与气候因素的影响,药剂和防治技术不理想,使花生蛴螬为害趋重。1为害趋重原因分析1.1结构调整因素
Laiyang City is the main producing area of peanuts, perennial planting area of 21300 hm2. Scabies is a common name for scarabs larvae. Peanut catfish is a major pest on peanuts. According to the statistics, peanut catfish occurred in the year with an area of 10,000 hm2, of which, the reclaimed area was 0.33 million hm2, the annual control area was about 93,300 hm2, and the loss of peanut was 5.2 million kg. Due to the adjustment of planting structure, tillage and cultivation techniques, the influence of soil and climatic factors, the medicament and the prevention and control technology are not ideal, so peanut 蛴 螬 damage weight. Analysis of the causes of damage 1.1 structural adjustment factors