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山区地膜玉米后期管理的中心是狠抓水肥,防早衰,防病虫,促早熟。具体应抓好以下几项工作: 一、补施粒肥玉米在抽雄后10～15天,一般每亩追施碳铵12.5公斤左右。方法是在距植株10厘米处,挖10～12厘米深小坑埋施。施后及时灌水,以提高化肥利用率。二、叶面喷施磷酸二氢钾在玉米吐丝前后,每亩用150克磷酸二氢钾,加水40～50公斤,喷于叶面。这样可使玉米增产9%左右,并提早成熟3～4天。三、剪掉下部果穗下部果穗
The latter part of mountainous area maize corn management is to pay close attention to water and fertilizer, premature senility, pest control, and promote early maturity. Specific should do a good job in the following areas: First, fill fertilizer Granary Corn in the tassel 10 to 15 days, generally topdressing ammonium per acre about 12.5 kg. Method is 10 cm away from the plant, dig 10 to 12 cm deep pits buried. Timely irrigation after application, in order to improve fertilizer utilization. Second, the foliar application of potassium dihydrogen phosphate in the corn before and after spinning, with 150 grams of potassium dihydrogen phosphate per mu, add water 40 to 50 kg, spray on the foliage. This will increase corn yield about 9%, and early maturity 3 to 4 days. Third, cut the lower part of the ears ear ear