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棉花叶面喷肥投资小,方法简便,效果显著。据邱县马落堡、贾寨乡、马头镇十个村500亩地试验,单产提高23.2％,质量提高1—2级,每亩增加收入150.25元。 棉花叶面喷肥当前常用的就是叶肥1号和叶肥2号,叶肥1号含氮34.7％、磷6.6％、钾6.6％,还含有硼、铁、镁、钼、锌、锰、铜等微量元素。叶肥2号含氮25.6％、磷14.96％、钾14.96％,也含有上述七种微量元素。因为叶肥1号含氮量较多,故应施在前期,就是花蕾盛期至棉铃初期施用。每亩喷施0.5公斤,间隔5—7天再喷第二遍。再间隔10天喷叶肥2号,每亩喷0.5公斤,间隔5—7天再喷第二
Small investment in cotton foliar fertilizer, the method is simple, the effect is remarkable. According to Qiu County Mabu Fort, Jia Zhai Township, Ma Touzhen ten villages of 500 acres of land test, yield increased 23.2%, quality improved 1-2 level, an increase of 150.25 yuan per mu. Leaf foliar fertilizer is currently the most commonly used foliar fertilizer No. 1 and No. 2, leaf fertilizer No. 1 34.7% nitrogen, phosphorus 6.6%, potassium 6.6%, also contains boron, iron, magnesium, molybdenum, zinc, manganese, Copper and other trace elements. Leaf fertilizer 2 25.6% nitrogen, 14.96% phosphorus, potassium 14.96%, also contains the above seven trace elements. Because of the nitrogen fertilizer foliar fertilizer more, it should be applied in the early stage, is the peak of the bud to the application of cotton boll. Spray 0.5 kg per acre, interval 5-7 days spray the second time. Spray leaf fertilizer interval of 10 days, No. 2, 0.5 kg per mu spray, spray 5-7 days intervals second