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一九七二年许屯公社山嘴大队的山东和砂包两个生产队。进行了花生叶面喷氮肥试验。于八月二十六日喷洒3％的尿素液,每次每亩喷尿素液约60斤,核每亩用尿素二斤左右。据山东生产队调查,花生连续喷两次尿素
In 1972, Shantun Commune Yamazaki Brigade Shandong and sand package two production teams. Peanut foliar nitrogen fertilizer test was carried out. Spray 3% urea solution on August 26, spraying about 60 kg of urea solution per mu per mu. Use about two pounds of urea per acre. According to the survey of Shandong production team, peanuts spray two consecutive urea