保水剂不同施用方法对甘蔗生长及产量的影响

用同一种保水剂,采取不同施用方法,探讨施保水剂与不施保水剂以及保水剂不同施用方法对甘蔗生长及产量的影响。试验前后经历3年,在2007年新植蔗施用保水剂,2008—2009年宿根蔗不再施用保水剂,结果表明,保水剂兑水处理：在新植蔗施用试验中获得极显著的增产效果,之后的两年宿根蔗试验仍增产显著。增产幅度表现逐年下降,增产效果随着施入土壤时间的延长而降低。保水剂干撒处理：3年的试验里表现出不同程度的减产。在施保水剂当年的新植蔗比对照略有减产,差异不明显;比保水剂兑水处理减产极显著。在后两年宿根蔗试验中,比对照减产明显,但差异不显著;比兑水处理减产显著。

Effect of Different Application Process of Water-retaining Agent on Sugarcane Growth and Yield

The experiment using same water-retaining agent treated with different application as applying water-retaining agent with water or without water,and no applying water-retaining agent was conducted to research the effect on growth and yield of sugarcane in new planting sugarcane in 2007,and ratoon sugarcane in 2008 and 2009.The results showed that the cane yield increased by applying water-retaining agent with water in plant sugarcane in 2007,and a significant effect on increasing cane yield in ratoon sugarcane from 2008 to 2009.However,the increase range and effect of cane yield was decreased year by year.The cane yield in the treatment of applying water-retaining agent without water was inordinately decreased during 3 years.Planting sugarcane in 2007,the cane yield of applying water-retaining agent without water was no significantly decreased in comparison with the control,but significantly decreased in comparison with the treatment of applying water-retaining agent with water.Moreover,in 2008 and 2009 year ratoon sugarcane,the cane yield of applying water-retaining agent without water was no significantly decreased in comparison with the control,but significantly decreased in comparison with the treatment of applying water-retaining agent with water.