崇明岛轻质土壤小麦配方施肥研究  

Study on combined fertilization of wheat on light-textured soil in Chongming

作　　者：时燕[1] 

机构地区：[1]上海市崇明县农业技术推广中心,上海202155

出　　处：《上海农业学报》2010年第3期134-137,共4页Acta Agriculturae Shanghai

基　　金：财政部测土配方施肥补贴项目[财农(2010-179号)]资助

摘　　要：为建立适宜小麦种植的施肥指标体系,对崇明岛轻质土壤进行小麦田间肥效试验。结果表明:小麦增产率、单位养分籽粒产出率、产投比均以施氮肥最高;肥料利用率以钾肥最高,氮肥次之,磷肥最低;施氮肥0～255 kg/hm^2、磷肥0～76.5 kg/hm^2、钾肥0～76.5 kg/hm^2,小麦产量随着肥料用量的增加而增加,继续增加施肥量,产量则逐渐下降;施肥量配比为氮274.7 kg/hm^2、磷69.9 kg/hm^2、钾74.0 kg/hm^2时,产量最高为5 766.6 kg/hm^2。Field experiments with wheat on light-textured soil were carried out in order to study effects of various-fertilizer rates on wheat yield and work up an index system of fertilizer application suitable for planting wheat. The results showed that the effect of nitrogen fertilizer application was the best in terms of wheat yield growth rate,wheat yield per unit nutrient weight,and output-input ratio;The descending order of fertilizer utilization ratio was potassium fertilizer,nitrogen fertilizer and phosphorus fertilizer; When fertilizer rates were 0 - 255 kg/hm^2 N, 0- 76. 5 kg/hm^2 P and 0-76.5 kg/hm^2 K,the wheat yield increased with fertilizer rates, but when the rates were over the above ranges the yield decreased gradually with fertilizer rates. The optimum nitrogen, phosphorus and potassium fertilizer rates were respectively 274.7 kg/hm^2 ,69.9 kg/hm^2 ,and 74.0 kg/hm^2 ,at which the wheat yield reached the highest,or 5 766.6 kg/hm^2.

关 键 词：小麦 轻质土 施肥量 肥料利用率 

分 类 号：S512.1[农业科学—作物学]