冀西北坝上旱滩地春油菜高产栽培措施及优化方案的研究  

STUDY ON THE HIGH-PRODUCTIVE COMPREHENSIVE MEASURES AND OPTIMIZATION SCHEME OF SPRING RAPS IN DRY-BEACH SOIL IN NORTHWEST PLAIN,HEBEI PROVINCE

作　　者：牛瑞明[1] 马文奇[1] 赵和[1] 徐长金[1] 刘会清[1] 

机构地区：[1]张家口农业高等专科学校农学系,075131

出　　处：《河北北方学院学报（自然科学版）》1997年第1期10-14,共5页Journal of Hebei North University:Natural Science Edition

基　　金：国家"八五"科技攻关项目

摘　　要：采用四元二次回归正交旋转组合设计,对影响冀西北坝上半干旱区旱滩地春油菜产量形成的密度、磷肥、氮肥、追氮比例四项关键农艺措施进行了定量化的综合研究,建立了高产栽培的数学模型,分析了单因素和二因素产量效应。四项农艺措施对产量作用的大小依次是:氮肥>密度>磷肥>追氮比例。优化农艺措施组合是:每公顷密度24.3～30.1万株,P_2O_5 53～80kg,N 107.8～120.9kg,追N比为总量的73％～93％。Four cultivating measues, i. e. seedling density, amount of phosphorous, amountof nitrogen and ratid of fertilizing nitrogen as the plant grows, were taken as variables inthis experiment, designed with the spinning combination of squre and regression andconducted in Zhang Bei Dryland Experiment Area. The regression equation of the seedyield were made with these four variables to the second power. In the light of yield equa-tion, the effects of the cultivation measures were identified, and they were in the orderof nitrogen amount, amount of planting seed, phosphorous amount, ratio of fertilizingnitrogen. The high yield and effiency comprehensive measures (yield) 1425kg·ha^(-1) wereas follows,density 243000～301000 plant·ha^(-1), PO53～80kg·hg^(-1),N 107.8～120.9kg·hg^(-1), ratio of fertilizing nitrogen 73%～93%.

关 键 词：旱滩地 春油菜 高产栽培 数学模型 农艺措施 优化方案 

分 类 号：S565.4[农业科学—作物学]