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| | This paper reports the methods of integrated managements of 39 main insects and 6 diseases with their controlling effects and economic benifit in an old mango garden. Inju- ries of each injurer were reduced in a wide range and the fruit output and the cash income in 1989 had increased to 11.6 times and 16.36 times respectively than 1986. | | 本文报道20年树龄的大型杧果园内39种重要害虫和6种病害的综合治理措施,防效及经济效益。大幅度降低每种病虫害的为害,1989年的果实产量和收入比1986年增加11.6倍和16.36倍。 | | 文摘来源 | | This paper briefly reports the disease of nothern grassland involing different grassland types and chief culture herbage. Aseries of meaoures controlling the diseases of the main fabaceous herbage are given in this artide. | | 本文简要报道了我国北方草甸草原、典型草原、荒漠(化)草原、青甘高山草原和黄土高原灌丛草原五个不同类型草原区及苜蓿、沙打旺、羊柴、草木樨、红豆草、披碱草(含老芒麦)、羊草和无芒麦的主要病害种类及分布的调查结果。在调查和试验的基础上,提出并讨论了北方主要豆科牧草病害综合治理对策。 | | 文摘来源 | | Cotton diseases are broad distributed in all cotton growing areas in China,annual losses of lint cotton reached to 360 thousand tons by weight and more than 7 thousand million yuan cost.Seedling diseases are more serious in south China than they are in north China.Fusarium and Verticillium wilts get losses almost 100 thousand tons of lint cotton in whole nation.In the rainy year,ball rot may become seriously,more than 50% balls can be attacked.Seed coating formulations and Miaobingjing seed treating chemica... | | 棉花是我国最重要的经济作物。棉花病害遍布我国广大棉区,每年因病害损失皮棉约36万吨,价70亿元。苗病在南方棉区重于北方棉区,成株期主要是枯萎病和黄萎病,分布全国,年损失皮棉10万吨以上;在多雨年份有些棉区铃病严重,病、烂铃率在50%以上。近年推广种衣剂和苗病净等农药,提高了苗病防治效果,用抗病品种防治棉枯、黄萎病是重要措施。铃病防治则仍依赖农业技术措施。棉花病害综合治理(IPM)把经济、生态、社会效益统一起来,提高了棉病防治层次,已在推行。但棉花抗黄萎病育种滞后;安全,高效、低毒农药开发尚待加强;植物生理保护体系的研究刚刚起步。所有这些都需大力加强。 | | 文摘来源 | |   | | << 更多相关文摘 |
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