摘要
为了提出南方赤红壤秋植玉米在不同目标产量下的施肥量建议,在采用"3414"部分实施方案的氮磷钾肥效试验中设无肥区、无氮区、无磷区、无钾区和全肥区5个处理。全肥区产量(6 653.10 kg/hm2)与无磷区产量(6 042.00 kg/hm2)差异不显著;两者与无钾区产量(5 472.60 kg/hm2)差异显著;无肥区产量(2 034.75 kg/hm2)与无氮区(1 458.45 kg/hm2)的差异也不显著,但与其他处理间产量差异极显著。氮、磷、钾的相对产量分别为21.92%9、0.81%和82.28%。试验土壤的氮、磷、钾供应量分别为37.50、51.90和117.15 kg/hm2。秋玉米对尿素、钙镁磷肥、氯化钾的利用率分别为38.70%、4.87%和9.36%。施肥应以土壤肥力状况为基础,以作物生长发育规律和需肥特性为中心,通过土壤测试、配方设计和肥料合理施用,达到增加效益的目的。
The aim of the study was to put forward the fertilization dosage for autumn maize in southern red soil under different objective yields. In N-P- K fertilizer efficiency experiment with part implementing plan of “3414” ,5 treatments of non- fertilizer plot（CK） ,non-nitrogen plot （applying P and K fer- tilizer） ,non-phosphorus plot （applying N and K fertilizer） ,non-potassium plot （applying N and P fertilizer） and entire fertilizer plot （applying N,P and K fertilizer）were set up,The difference between the yield of entire fertilizer plot（6 653.10 kg/hm^2） and the yield of non-phosphorus plot （6 042.00 kg/hm^2） was not significant and between the yield of former two plots and non-potassium plot （5 472.60 kg/hm^2） was significant.The yield difference between non- fertilizer plot （2 034.75 kg/hm^2） and non-nitwgen plot （1 458.45kg/hm^2）was not significant,but between former two plots and other plots were very sig- nificant.The relative yields of N,P and K were 21.92% ,90.81% and 82.28% respectively and N,P and K supply of tested soil were 31.50,51.90 and 117.15 kg/hm^2 respectively.The utilization rates of autumn maize to urea,calcium magnesium phosphate and potassium chloride were 38.70% ,4.87% and 9.36% respectively. In the fertilization, the soil fertility condition should be took as base, the gTowth and development law of crops and their fertilizer- needing characters should be made as center and the aim of increasing benefit through soil test, formula design and reasonable fertilization would be achieved.
出处
《安徽农业科学》
CAS
北大核心
2007年第24期7529-7530,共2页
Journal of Anhui Agricultural Sciences
关键词
秋玉米
氮磷钾
肥效试验
配方施肥
技术参数
Autumn maize
N- P- K
Fertilizer efficiency experiment
Formuda fertilization
Technical parameterss
