不同缓控释肥对棉花农艺性状、产量和效益的影响

Effects of Different Controlled Release Fertilizer on Agronomic Traits,Yield and Economic Benefit of Cotton

[目的]为了探明不同缓控释肥在洞庭湖平原区棉花生产中的综合表现。[方法]以当地常规施肥方法为对照,采用大田随机区组试验,开展了不同缓控释肥品种对棉花农艺性状、产量和经济效益影响的研究。[结果]各处理的株高无显著性差异;第一果枝节位高和单株平均果枝长均以对照为大,均显著高于其他处理。在棉株产量构成因素中,各处理的果枝数、单铃重和衣分均无显著性差异。45%帝元生物控释肥和45%司尔特棉花专用缓释肥处理的单株成铃数均显著高于其他处理,其皮棉产量为最高,均显著高于对照,分别比对照增加233.2、236.3 kg/hm2;其净产值也均高于对照,分别比对照增加5 578.6和5 833.8元/hm2。[结论]45%帝元生物控释肥和45%司尔特棉花专用缓释肥增加了棉花产量和净产值,建议可在洞庭湖平原区推广应用。

[ Objective] The research aimed to investigate the comprehensive performance of different controlled release fertilizer in the cotton production in Dongting Lake plain. [ Method] On the basis of the field randomized block experiment, the effects of different controlled release fertilizer on the agronomic traits, yield and economic benefit of cotton were studied. Some controlled release fertilizer were introduced by using local application fertilizer method as control. [ Result] There wasn＇ t difference in the plant height of cotton among different controlled release fertilizer. And the height of first branch and average branch length were higher than that of the other treatments. There wasn＇ t difference in the number of branch, single boll weight and lint percentage with different controlled release fertilizer. And the boll number per plant with emperor yuan bio- ontrolled release fertilizer （TI） and Shicrte controlled release fertilizer （T2） were higher than those of the other treatments. Compared with the control, the lint yield of cotton were increased by 233.2 kg/hm^2 and 236.3 kg/hm^2 with T1 and T2. Meanwhile, the net output value with T1 and T2 were increased by 5578.6 yuan/hm^2 and 5833.8 yuan/hm^2, respectively, compared with the control. [ Conclusion] The emperor yuan bio-controlled release fertilizer and Shierte controlled release fertilizer should be applied in the cotton production in the Dongting Lake plain for that the higher lint yield of cotton and net output value.