不同土壤湿度对棉纤维发育的影响

The Effect of Soil Humidity on the Development of Cotton Fiber

土壤湿度对棉纤维发育具有显著的影响.土壤湿度高,可以促进棉纤维的伸长和干物质的积累,加速可溶性糖向纤维素转化,提高纤维素积累能力.有利于棉纤维的发育;土壤湿度低.则抑制棉纤维的发育.在开花结铃期,土壤湿度为40％时.显著地抑制棉纤维发育,60％时基本上能满足棉纤维发育,80％时能较好地促进棉纤维发育。因此,在盛花期土壤湿度不应少于80％,如果干旱,应及时灌溉,补充土壤水分.

Soil Humidity has an obviously significant .effect of the'development of cotton fibers. High soil humidity can promote the cotton fiber length ,and accumulation of dry matter, and accelerate the transformation of soluble sugcr into ccllialosc and raise the synthesis rate of cellulose in fiber as well as be favourable for the development of cotton fibers. Conversely, low soil humidity can inhibit the development of cotton fibers .In the flowering and cotton boll forming stage when soil humidity is 40%, the development of cotton fiber is significantly inhibited; when 60%, it can basically meet the needs of cotton fiber development ; when 80% ,thc development of cotton fiber is better encouraged. Therefore ,in the full blooming stage, soil humidity should not be less than 80%.Tf drought occurs, irrigation will be carried out in time so as to supplement soil water.