摘要
试验就生态肥与不同氮、磷、钾肥配施对玉米穗部性状、产量性状的效应及其相互关系进行了研究,结果表明:不同肥料配比对玉米穗部性状及产量性状有明显作用,各处理经济性状均不同程度发生变化.穗长增加1.14 cm,结实穗长增加0.48 cm,单穗重比CK增加13.3%,出籽率高1.9个百分点,芯重增加7.5%,千粒重增加25.1%.处理平均增产1 389.4 kg/hm2,增产幅度22.8%.最佳产量的施肥量为N、P2O5和K2O各63.0～71 kg/hm2,生态肥52～105 kg/hm2.最佳出籽率的肥料施用量为N、P2O5和K2O各63.0 kg/hm2,生态肥105 kg/hm2.最佳穗重和千粒重的施肥量为N、P2O5和K2O各71～79 kg/hm2,生态肥0～52 kg/hm2.
We made a study of the effects of the combined application of organic fertilizer with various nitrogen,phosphate and potassium on the maize ears and yield and their relationship.The experimental results show that varying fertilizer ratio has dramatic effect on maize ears and yield.The economic characters will vary accordingly.When the ear is 1.14 cm longer,the fruiting ear will be increased by 0.48 cm,the weight of a single ear by 13.3% than CK,the seed rate by 1.9%,the weight of corncob by 7.5%,the TKW by 25.1%;the average yield increase will be 1389.4 kg/hm2 and the production will be increased by 22.8%.The best yield fertilizer rate is the combined application of 63～71 kg/hm2 of nitrogen,P_2O_5 and K_2O each and 52.5～105 kg/hm2 of organic fertilizer.The best seed yield fertilizer ratio is the combined application of 63 kg/hm2 of nitrogen,P_2O_5 and K_2O each and 105 kg/hm2 of organic fertilizer.The best ear weight and TKW fertilizer ratio is 71～79 kg/hm2 of nitrogen,P_2O_5 and K_2O each and 0～52.5 kg/hm2 of organic fertilizer.
出处
《西安文理学院学报（自然科学版）》
2012年第2期38-42,共5页
Journal of Xi’an University(Natural Science Edition)
基金
西北农林科技大学唐仲英育种基金
陕西省"13115"科技创新工程重大科技专项(2010ZDKG_67)
关键词
玉米
产量
肥料
粒重
maize
yield
fertilizer
kernel weight
