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

Dang Zengchun; Li Dingxin; Xu xuexuan

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

- A Study of Optimum Model for Flax Cultivation in Southern Ningxia Loess Hilly Area
- Bulletin of Soiland Water Conservation Vol. 14, Issue 2, Pages: 26-32(1995)
- 作者机构：
  
  中国科学院水利部西北水土保持研究所
- 作者简介：
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- Published：1995
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Dang Zengchun, Li Dingxin, Xu xuexuan. A Study of Optimum Model for Flax Cultivation in Southern Ningxia Loess Hilly Area[J]. Bulletin of Soiland Water Conservation, 1995, 14(2): 26-32.
DOI：

Dang Zengchun, Li Dingxin, Xu xuexuan. A Study of Optimum Model for Flax Cultivation in Southern Ningxia Loess Hilly Area[J]. Bulletin of Soiland Water Conservation, 1995, 14(2): 26-32. DOI：

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

为92.7kg/hm

播量为55.2kg/hm

此时获得的胡麻产量为1921.3kg/hm

;旱年──N肥为101.2kg/hm

为102.6kg/hm

播量为56.4kg/hm

此时获得的胡麻产量为1568.2kg/hm

此方案将为旱地胡麻生产持续稳定发展提供科学依据。

Abstract

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

P2O5 and seeding rate.The relationship among N

P2O5

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/hm2

P2O5 92.7kg/hm2

seeding rate:55.2kg/hm2

and the yieldwould be 1921.3kg/hm2

Under the drought style: N:101.2kg/hm2

P2O5:102.6kg/hm2

seedingrate:56.4kg/hm2

and the yield would be 1 568.2kg/hm2.The optinal model would be very signifi-cant for improving flax yield in practice.

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