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棉花叶面施钾和生长调节剂的增产效果美国阿肯色大学１９９１～１９９２年的研究表明，采用早熟品种和大量施用氮肥使棉花普遍发生缺钾现象，而叶面喷施ＫＮＯ３可弥补钾的缺失。此外，施用生长调节剂（ＰＧＲ一ＩＶ）亦可明显提高棉花产量。其作用机理是，叶面施用ＰＧＲ...
Cotton leaf foliar application of potassium and growth regulator effect The University of Arkansas from 1991 to 1992 studies have shown that the use of early maturing varieties and nitrogen fertilizer to make cotton generally potassium deficiency phenomenon, and the foliar application of KNO3 can make up for the lack of potassium. In addition, the application of growth regulator (PGR-IV) also significantly increased cotton yield. Its mechanism of action is foliar application of PGR ...