南疆早中熟陆地棉主茎生长观察初报

Preliminary Report on Main Stem Growth of Medium-early Upland Cotton in the South of Xinjiang

近年来,以地膜覆盖为基础,以“矮,密,早”为核心,以调控和综合防治为保障的栽培技术的大面积应用,使陆地棉的生长环境与过去有很大不同。2005年在喀什疏勒县对新陆中21号进行观察,发现其主茎的生长规律与过去梧比发生变化。对新陆中21号每隔3天观察。主茎由出现1个新节间变为2个新节间；同时从节间长度基本固定的那节起再向上数第2个节间伸长最快变为那1节起再向上数第1节或第3节伸长最快。

In recent years, taking mulching plastic cover as foundation, of＂ short, dense, early ＂ be the core, taking regulates and the synthesis guards against as the safeguard cultivation technology in great area, caused the upland cotton growth environment to be greatly different from in the past. In 2005, Xingluzhong 21 was observed in Sule county of kashi, great changes were taken place in stem growth rule, ccrnpared with the past. By observation of Xingluzhong 21 it was found that every 3 days 1 new node became 2 new nodes.