桂阳县无公害烟区烟草主要害虫种类及发生规律调查

Application of Jinzhengda Slow-release Fertilizer on Late Rice

为了明确郴州市桂阳县无公害烟区的主要害虫种类,采用频振式诱虫灯和田间普查的方法,于2010年和2011年的3~7月对该县烟草基地进行害虫调查采集,共采集到害虫2纲7目27科60种,基本明确了桂阳烟区主要害虫为小地老虎、烟蚜、烟夜蛾、斜纹夜蛾、棉铃虫、蜗牛等;同时针对几种主要害虫的发生规律进行了研究,结果表明,小地老虎和烟蚜的发生高峰主要集中在4月和5月,烟夜蛾和斜纹夜蛾的发生高峰主要集中在6月;还针对各种害虫的特点提出了相应的防治措施。

Fertilizer location experiments were carried out to investigate the effect of Jinzhengda slow-release fertilizer on increasing output and benefit of rice in plain and hilly area around lake of northern Hunan with slow release fertilizer, organic fertilizer and conventional chemical fertilizer in Bijiashan village of Heshan district, Yiyang city in 2011. The results showed that slow-release fertilizer could provide enough nutrition to plant and improve soil nutrition. The fertilizer released fast at early stage, the total content of N and K were 227.33 and 180 mg/kg in the soil. The yields of Xiangwanxian No.17 were different under different treatments： slow-release fertilizer 〉 organic fertilizer 〉 conventional fertilization 〉 CK.