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近年来国内许多单位针对小麦锈病进行了大量的药剂防治研究工作。到目前为止,经过多年多点试验,肯定对锈病有显著防治效果,被认为有推广前途的药剂有磺酸类、氟素剂、代森锌、二硝散、石硫合剂等几种。达些药剂都是稀释成液剂后使用的。根据近年来经验,大面积使用液剂防治小麦锈病存在以下问题:(1)一般用压缩式喷雾器喷药,工作效率很低(一人一天一亩多地),要完成防治任务需占用大量人力,影响其他农活安排。(2)防治锈病的时间性很强,由于效率太低,做到适时防治非常困难。(3)所需喷雾器数量很大,非在短时期内所能供应。(4)喷雾需水量很大(每亩200斤),在水源较少地区,应用起来困难很多。如果能够改用粉剂就有可能解决以上问题。根据实测结果,估计用一架手
In recent years, many domestic units for wheat rust carried out a large number of pharmaceutical control research. So far, after many years of experiments, it is sure that there is a significant prevention and cure effect on rust. It is considered that sulfonates, fluorocarbons, dexamethasone, nitrous oxide and lime sulfur compounds are some of the agents that promote the future. Some of these agents are used after dilution into the liquid agent. Based on the experience in recent years, the large area of liquid liquor used to prevent and treat wheat rust has the following problems: (1) The general use of compressed sprayer spraying is inefficient (one person a day and a mu), a large amount of manpower needs to be taken to complete the prevention and control task, Affect other farm work arrangements. (2) Prevention of rust is very time-consuming, because of the inefficiency, it is very difficult to prevent and control it timely. (3) The number of nebulizers required is large and can not be supplied in a short period of time. (4) spray water demand is large (200 kg per mu), in less water areas, the application of a lot of difficulties. If you can switch to powder it is possible to solve the above problems. According to the measured results, it is estimated that with a hand