简述了特色红薯品种“西瓜红”的特征特性,及在铜仁市栽培实现高产的途径,即:保温育苗,培育壮苗;提早栽插、提早结薯;起垄栽培,合理密植;因地施肥,尽量做到精确定量;提蔓与防治病虫草鼠相结合;适时收获;分级包装和安全贮藏越冬.
对思南县水稻稻曲病的发生规律进行调查,从气候条件、品种布局、菌源及栽培管理等方面分析发病的主要因素,并提出稻曲病的综合防控技术。
对贵州省思南县水稻稻曲病的发生特点进行调查,从气候条件、品种布局、菌源及栽培管理等方面分析发病的主要因素,并提出稻曲病的综合防控技术,以期为水稻稻曲病的防治提供参考。
以期促进县级农作物病虫测报系统日趋完善,对思南县农作物病虫测报体系人员、监测设备及测报工作开展等基本情况进行了调查和分析,并提出今后工作的发展对策。
2007—2008年,思南县连续2年实施"水稻稻曲病综合防控技术推广应用"项目。总结了该项目实施的具体方法措施,并分析项目实施后取得的经济效益、社会效益和生态效益。
选用国光牌保鲜剂、70%甲基托布津可湿性粉剂、50%多菌灵可湿性粉剂,对贮藏期甘薯黑斑病进行防治比较试验,结果表明,国光牌保鲜剂对甘薯黑斑病的防治效果最好,保鲜率为92.75%;其次为70%甲基托布津,保鲜率为79.24%;50%多菌灵效果较差,保鲜率为67.73%。
<正>甘薯黑斑病是甘薯的主要病害,该病为害薯苗、薯块,以薯块受害最重。薯块发病产生圆形或近圆形的黑褐色病斑,病部中央稍凹陷,病健界分明,轮廓明显,上生灰色霉层,在湿度适宜时病部长出黑色的刺毛状物。病菌侵入薯肉下层,使薯肉变为墨绿色。薯苗发病,一般在幼苗基部白嫩部分产生梭形或长圆形的黑
The results showed that there were very significant differences between percentage of diseased plant and index of disease in different amount of applied nitrogen.There were significant differences in the percentage of diseased plant and the index of disease between the applied amount of nitrogen of 300～375?kg/hm~2 and 0～225?kg/hm~2.The percentage of diseased plant and index of disease reached the highest value at applied amount of nitrogen of 375?kg/hm~2,and average value was 15.19% and 13.21 respectively.Non-nitrogen treatment was the lowest,and the average value was 7.04% and(4.62) respectively.At applied amount of nitrogen 0～375?kg/hm~2,the percentage of yield loss caused by disease was 3.56%～18.29%.There was significant positive correlation among the applied amount of nitrogen,percentage of diseased plant,index of disease and percentage of yield loss.The applied amount of nitrogen of 150～225?kg/hm~2 was suitable for yellow seed double-low hybrid rape,the harmness of Sclerotinia sclerotiorum was lighter and the yield can attain over 3?000?kg/hm~2.
根据饲养观察结合大田调查,结果表明,稻飞虱秧田虫量与本田虫量之间无相关性,秧苗所带卵的孵化率与大田水层深度有关。
试验结果表明,15%乐·氯EC复配剂防治菜青虫推荐用药量为930～1125ml/hm2,在菜青虫2～3龄期喷药防治,7 d防治效果为87.74%～93.55%,15 d防治效果达91.82%～97.39%,且对白菜生长安全.
灯诱结果表明:在贵州塘头稻区,白背飞虱、褐飞虱成虫混合发生,始见期分别为4月11～18日和21～24日;白背飞虱、褐飞虱成虫种群数量的季节性消长动态年度间均较一致,同期年度间诱虫量变化大;4、5、6月诱虫量少,7、8、9月诱虫量多且出现4次成虫高峰,10月诱虫量明显减少,到10月14～19日和17～20日成虫种群分别终见.
