摘要
采用田间小区试验,以佛甜2号甜玉米为试验材料,研究了不同氮、磷、钾施肥量对甜玉米产量及农艺性状的影响。结果表明:单独增施氮肥、磷肥或钾肥,甜玉米的穗长、百粒重均随施肥量的增加而增加,秃尖长缩短,进而导致产量上升,但当氮磷钾施肥量增大到一定程度时,产量增速放缓,当施肥量增加到最大时,产量反而会降低;对氮、磷、钾施肥量及产量进行回归分析表明,氮、磷、钾施肥量均与产量呈一元二次抛物线方程,且方程均显著,在其他肥料比较充足的情况下,氮、磷、钾肥的最佳施肥量分别为319.4、93.9、218.4 kg/hm2,对该理论最佳施肥配方进行校正试验,产量为18.14 t/hm2,比对照增产24.8%,差异显著。
A field experiment was carried out to study the effects of fertilization on yield and agronomic traits of sweet corus with Fotian No.2 sweet corn as the test materials. The results indicate that sweet corn ear length, 100-seed weight was increased significantly with the increase of nitrogen phosphate and potassium fertilizer application respectively,and bald tip length shortened,resulting in the increase of yield.But the yield increased slowly when the nitrogen phosphorus and potassium fertilization increases to a certain extent,and even decreased when the fertilizer application was the highest.The regression analysis showed that nitrogen phosphorus potassium fertilizer application and yield showed a two times parabola equation significantly.Under the field fertility of this experiment ,the optimum fertilization combination was：N 319.4 kg/hm2,P205 93.9 kg/hm2 and K2O 218.4 kg/hmZ,The fresh ear yield was 18.14 t/hm2 in correction test with the theory of optimal fertilizer,increased by 24.8% compared with CK.
出处
《广东农业科学》
CAS
CSCD
北大核心
2013年第14期60-62,66,共4页
Guangdong Agricultural Sciences
基金
广东省农技推广专项资金项目"广东省酸性土壤甜玉米测土配方施肥技术示范与推广"
关键词
甜玉米
施肥
产量
农艺性状
sweet corn
fertilization
yield
agronomic trait
