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1983-1985年,在英格兰西南部进行了冬大麦栽培试验.结果发现,以每吨大麦100英镑的市场价格计算,每季大麦喷杀菌剂(最多喷3次)增加利润53-250英镑/公顷,增加的多少取决于品种和施氮时间;不用杀菌剂处理,不管地区和年份都将追氮时期由3月中旬推迟到4月中旬,每公顷平均利润为28-154英镑,在第30生育阶段施用植物生长调节剂,平均利润的变幅较大,但总的说来3月份追氮的作物施用调节剂效益更好.将上述管理措施结合使用,可以区分出一些在相同甚至较低的农业投入地区提高利润的途径.总的说来,不论何时施氮,春季喷施两次杀菌剂始终是有益的,而秋季增施一次杀菌剂往往使利润降低.1985年研究了对3月或4月份追氮的作物进行上述管理的经济效益:只在旗叶完全伸出时(第39生育阶段)喷杀菌剂并在3月中旬追氮的处理,与不施杀菌剂而3月中旬追氮的处理相比,前者的总利润比后者高;而于4月中旬追氮的,在第39生育阶段喷施杀菌剂比不施杀菌剂的总利润提高的更多;当3月中旬而不是4月中旬追施氮时,秋季加施一次杀菌剂,各品种的利润均有所提高.本文还讨论了大麦市场价格降低到80英镑/吨时的利润情况.
A winter barley cultivation test was conducted in southwestern England from 1983 to 1985 and found that barley spray fungicides (up to 3 sprayings) increased profits by 53-250 pounds per hectare at a market price of £ 100 per tonne of barley , Depending on the variety and timing of nitrogen application; without bactericide treatment, the nitrogen recovery period will be delayed from mid-March to mid-April in both regions and years with an average profit of 28-154 pounds per hectare, Stage application of plant growth regulators, the larger average range of profits, but in general the efficiency of topdressing crop application regulators in March is better.Use of the above management measures can be used to distinguish between some in the same or even lower Agricultural input into the region to increase profits way.In general, whenever the nitrogen application, spraying two times in the spring biocide is always beneficial, but in the fall often a second fungicide to reduce profits in 1985 to study the March Or the nitrogenous crops in April for the above management: The fungicide was sprayed only when the flag leaf was fully extended (39th birth stage) and nitrogen was collected in the middle of March, compared with no pesticide application in mid-March Top Nitrogen treatment compared to the former While the latter was higher than the latter. In mid-April, the total profit of spraying germicide at the 39th growth stage was higher than that of the non-germicidal agent. When the nitrogen was chased from mid-March to mid-April, , Plus a bactericide in autumn, the profits of all varieties have increased.This article also discusses the barley market price down to 80 pounds / ton when the profit.