黄河宁夏灌区栽培蓖麻优化施肥技术试验研究  

Study on Optimizing Fertilization Techniques of Castor Bean Cultivation in Ningxia Irrigation Area of Yellow River

作　　者：于荣[1] 袁怀民[2] 

机构地区：[1]宁夏职业技术学院,宁夏银川750002 [2]宁夏大学数学与计算机学院,宁夏银川750021

出　　处：《内蒙古农业科技》2010年第1期57-58,共2页Inner Mongolia Agricultural Science and Technology

基　　金：宁夏"十五"科技攻关项目"平罗县万亩蓖麻基地建设研究与示范"

摘　　要：肥料效应田间试验是测土配方施肥工作中一项十分重要的内容,是获得各种作物最佳施肥量、施肥时期和施肥方法的根本途径,也是筛选和验证土壤养分测试方法、建立推荐施肥指标体系的基本环节。试验旨在通过田间试验,构建蓖麻优化施肥模型,总结完善宁夏蓖麻高产栽培综合技术体系。试验结果表明,施氮对蓖麻产量具有明显的响应,其相关性为:y=-0.2278x2+5.1452x+220.59,R2=0.6675,在黄河宁夏灌区中等肥力土壤上种植蓖麻,适宜的施氮量为纯N12kg/667m2;施磷对蓖麻产量同样具有明显的响应,其相关性为:y=-1.3618x2+19.403x+180.89,R2=0.8908,在宁夏灌区中等肥力土壤上种植蓖麻,适宜的施磷量为纯P2O58kg/667m2。Field experiment of Fertilizer is a very important factor in soil testing fertilization.It also can obtain useful results about optimal dosages of fertilizer,time and method of supplying fertilizer.This studied will establish the optimal mode in planting caster and promote the cultivation system with high yield from field experiment.The conclusion is the yield observably increase with supplying nitrogenous fertilizer.The relativity is y =-0.2278x2＋5.1452x＋220.59,R2=0.6675.The appropriate dosages of nitrogenous fertilizer is 12kg/667m2 for planting castor in Ningxia Yellow River Irrigation Area.The same result as Phosphor.The relativity is y=-1.3618x2＋19.403x＋180.89,R2=0.8908,The appropriate dosages of phosphor is 8kg/667m2。

关 键 词：蓖麻 优化施肥 产量 

分 类 号：S565.6[农业科学—作物学]