宁南黄土丘陵区旱地胡麻丰产优化栽培模式研究  

A Study of Optimum Model for Flax Cultivation in Southern Ningxia Loess Hilly Area

作　　者：党增春[1] 李鼎新[1] 徐学选[1] 

机构地区：[1]中国科学院水利部西北水土保持研究所

出　　处：《水土保持通报》1995年第2期26-32,共7页Bulletin of Soil and Water Conservation

摘　　要：试验应用二次回归正文旋转组合设计方法，通过建立数学模型，定量分析研究了氮磷及播量三因素时旱地胡麻产量的效应，计算出旱地胡麻在不同气候年份的丰产优化栽培方案。即旱地胡麻的最佳施肥时和播量为：平水年──Ｎ肥为９６．４ｋｇ／ｈｍ￣２，Ｐ＿２Ｏ＿５为９２．７ｋｇ／ｈｍ￣２，播量为５５．２ｋｇ／ｈｍ￣２，此时获得的胡麻产量为１９２１．３ｋｇ／ｈｍ￣２；旱年──Ｎ肥为１０１．２ｋｇ／ｈｍ￣２，Ｐ＿２Ｏ＿５为１０２．６ｋｇ／ｈｍ￣２，播量为５６．４ｋｇ／ｈｍ￣２，此时获得的胡麻产量为１５６８．２ｋｇ／ｈｍ￣２，此方案将为旱地胡麻生产持续稳定发展提供科学依据。Field trials were conductded by using the regression design of quadric orthogonal rotationin southern ningxia hilly area.By means of establishing mathematical model, this paper analysisedthe input of N, P_2O_5 and seeding rate.The relationship among N, P_2O_5,seeding rate and yield wasset up,with which the optinal medel for flax cultivation vvas set out.The model gave the inputamount of fertilizer and seeding rate according to rainfall style.They were that:in ordinery rainfallstyle,N is inputed by 96.4kg/hm￣2, P_2O_5 92.7kg/hm￣2,seeding rate:55.2kg/hm￣2, and the yieldwould be 1921.3kg/hm￣2, Under the drought style: N:101.2kg/hm￣2, P_2O_5:102.6kg/hm￣2, seedingrate:56.4kg/hm￣2, and the yield would be 1 568.2kg/hm￣2.The optinal model would be very signifi-cant for improving flax yield in practice.

关 键 词：旱地 胡麻 栽培 黄土丘陵区 

分 类 号：S565.904[农业科学—作物学]