洞庭湖区不同肥力土壤磷肥不同用量对苎麻生长及产量的影响  

Effects of Phosphate Fertilizer Quantity on Growth and Yield of Ramie under Different Soil Fertility Level in Dongting Lake Area

作　　者：蒋上志 苏伟[1] 郭凝[1] 唐春江 陈敏[1] 刘大志[1] 熊艳辉[1] 熊晖[1] 

机构地区：[1]桃江县农业局,湖南桃江413400 [2]益阳市农业局,湖南益阳413000

出　　处：《安徽农业科学》2014年第28期9743-9744,9748,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]为了探求不同肥力土壤上,苎麻最高产量磷肥的施用量。[方法]在确定氮肥、钾肥用量的基础上,将苎麻磷肥用量设4个处理,进行小区试验。把不同肥力的各个小区的苎麻产量(y)和磷肥施肥量(x)经计算机拟合,两者之间呈现二次曲线相关,得回归方程。通过计算,获得苎麻最高产量磷肥的施用量。[结果]苎麻的产量随着磷肥用量的增加而增加。当磷肥用量超过一定量后反而减少;苎麻产量和磷肥施肥量两者之间呈现二次曲线相关,且相关性达到0.01显著水平。[结论]在高、中、低肥力土壤条件下,苎麻最高产量的磷肥施用量分别为57.00、81.6、67.59 kg/hm2。[Objective]The research aimed to study the amount of phosphate fertility applying for the highest output of ramie in different level of fertility soil.[Method]Based on the traditional fertilization of the nitrogen and potassium,a field trial was laid out with phosphate fertilizer of four levels.And computer fitting was applied to data processing of ramie yield （y） and amount of phosphate fertility applying （x） at many districts with different soil fertility levels.Then the regression equation was obtained,thereby the applying amount of the highest yield was got after calculation.[Result]The yields of ramie increased and then decreased with the increase level of phosphate fertilizer.And there was a significant quadric relationship between the ramie yield and phosphate fertilizer.[Conclusion]The applying amounts of phosphate fertilizer for the highest yields of ramie at high,middle and low fertility soils were 57.0,81.66 and 67.5 kg/hm2,respectively.

关 键 词：苎麻 磷肥 产量 影响 

分 类 号：S563.1[农业科学—作物学]