摘要
为不同壤质及肥力下玉米的合理施肥提供科学依据,采用"3414"试验设计方法,研究不同玉米品种氮磷钾配施对其产量的影响及肥料效应。结果表明:不同施肥处理玉米穗长、穗粗、秃尖长度、穗粒数、粒重和产量存在显著差异。施肥可改善玉米农艺性状进而提高产量,丰乐村和海东村2块试验地玉米产量增产幅度分别为11.0%～64.3%和0.2%～61.9%;且氮、磷、钾肥间存在明显互作效应,在N2、P2和K2施肥水平玉米产量达最高,其肥料效应依次为N>P2O5>K2O。经曲线拟合,该试验条件下推荐施肥量丰乐村试验地N、P2O5和K2O分别为373.7kg/hm2、74.8kg/hm2和79.9kg/hm2;海东村试验地N、P2O5和K2O分别为419.7kg/hm2、75kg/hm2和75kg/hm2。
The effects of different NPK combinations on agronomic traits and yield of different maize varieties were studied by a“3414”experimental design to provide the scientific basis for rational fertilization under different soil texture and fertility in maize cultivation.Result:There are significant differences in ear length,ear diameter,bare tip length,kernels per ear,kernel weight and yield among different fertilization treatments.Fertilization can increase maize yield by improving agronomic traits of maize and the yield increment range of maize planted in Fengle and Haidong Village is 11.0%-64.3%and 0.2%-61.9%respectively.There are obvious interactions among N,P and K fertilizer.The yield of maize under N 2,P 2 and K 2 application level reaches the maximum and its fertilizer effect is N >P 2O 5 >K 2O.The recommend N,P 2O 5 and K 2O amount for Fengle and Haidong Village is 373.7 kg/hm^2,74.8 kg/hm^2 and 79.9 kg/hm^2,and 419.7 kg/hm^2,75 kg/hm^2 and 75 kg/hm^2 under N 2,P 2 and K 2 application level after curve fitting respectively.
作者
周龙
曾志伟
杨德荣
ZHOU Long;ZENG Zhiwei;YANG Derong(College of Plant Protection,Yunnan Agricultural University,Kunming,Yunnan 650201;Yunnan Yuntianhua Co.,Ltd.,Kunming,Yunnan 650228;Yunnan Chemical Research Institute,Kunming,Yunnan 650228,China)
出处
《贵州农业科学》
CAS
2019年第1期36-42,共7页
Guizhou Agricultural Sciences
基金
云南省科技计划重点项目(2015FA022)
公益性行业科研专项(201103003
关键词
玉米
合理施肥
肥料效应
产量
maize
rational fertilization
fertilize effect
yield
