论文部分内容阅读
我区春小麦叶面喷施磷酸二氢钾,仅1980、1981两年用量达一百多吨,喷施面积达80多万亩。张掖市两年结合飞防施用面积达67万多亩,人工喷施5万多亩,施用量达144吨,价值40多万元。为了验证叶面喷施磷酸二氢钾的增产效果。我们从1981年开始在我所试验场进行了四年的田间试验,又分别在土壤肥力较低的张掖市小满农科站及冷凉灌区的民乐县进行两年的试验。并于83—85年搞了P~(32)示踪试验。现将结果简结于后。一、喷施磷酸二氢钾的田间试验试验设计:喷施磷酸二氢钾和喷等量清水二个处理,重复9—24次,小区面积0.02亩,顺序排列。喷施时间同大田,在春小麦挑旗期开始喷施,即每年六月上旬至六月下旬,每隔七天喷一次,共喷施三次。磷酸二氢钾,选用北京化工厂生产的二级纯试剂,试液浓度0.5％,亩用量每次25公斤。试验结果及分析:(附表)
My area of wheat leaf surface spraying potassium dihydrogen phosphate, 1980,1981 only two years amount of more than 100 tons, spraying area of more than 800000 acres. Zhangye City, flying two years combined with the application area of 670,000 mu, artificial spraying 50,000 mu, the amount of 144 tons, the value of more than 400,000 yuan. In order to verify the foliar application of potassium dihydrogen phosphate yield. We started a four-year field experiment at our site since 1981, and we conducted two-year experiments in Xiaoman Agricultural Station of Zhangye City with low soil fertility and Minle County in Lengxiang Irrigation District respectively. And in 83-85 years engaged in P ~ (32) tracer test. Now concludes the result. First, the field test of potassium dihydrogen phosphate spray Test design: spraying potassium dihydrogen phosphate and spray the same amount of water two treatments, repeated 9-24 times, the plot area of 0.02 acres, in order. Spraying time with the field, in the spring wheat flag period to start spraying, that is, from early June to late June every year, spray once every seven days, a total of three times. Potassium dihydrogen phosphate, selected Beijing Chemical Plant production of two pure reagents, test solution concentration of 0.5%, mu amount of 25 kg each. Test results and analysis: (Schedule)