播期与秋闲田饲用高粱生物产量的回归分析  

Regression Analysis between Sowing Times and Biological Yields of Forage Sorghum in Autumn Idle Land

作　　者：周汉章[1] 刘红霞 刘环 周新建 魏志敏[1] 李顺国[1] 侯升林[1] 

机构地区：[1]河北省农林科学院谷子研究所国家谷子改良中心河北省杂粮研究重点实验室,河北石家庄050035 [2]河北省深泽县职业技术教育中心,河北深泽052560 [3]河北省深泽县农业局,河北深泽052560 [4]河北省石家庄市农业局,河北石家庄050051

出　　处：《畜牧与饲料科学》2017年第9期31-36,共6页Animal Husbandry and Feed Science

基　　金：农业部公益性行业科研专项"牧区饲草饲料资源开发利用技术研究与示范"(20120304201)

摘　　要：[目的]为了使秋闲田饲用高粱丰产丰收,探索播期与秋闲田饲用高粱生物产量的线性回归预测模型。[方法]采用田间试验与线性回归分析的方法,对播期与饲用高粱生物产量的关系进行模拟和比较。[结果]播期对秋闲田饲用高粱生物产量具有重要影响,其生物产量随播期的推迟而降低。构建了播期与生物产量关系的回归模型,鲜草产量与播期的回归模型为y鲜=196.646-4.625x,干草产量与播期的回归模型为y干=58.253-1.423x。在7月23日—8月30日的播期每推迟1 d,饲用高粱的鲜草产量平均减少4.625 kg/20 m^2,干草产量平均减少1.423 kg/20 m^2。[结论]该研究构建的回归模型,为秋闲田饲用高粱生产提供了数据参考。[Objective]In order to improve the forage sorghum yield level in autumn idle land, the linear regression prediction model of sowing times and biological yields of forage sorghum was statistically constructed. The correlation between sowing times and biological yields of forage sorghum was simulated and compared by conducting field plot experiment and employing linear regression analysis method. [Results]The sowing times had great influence on the biological yields of forage sorghum, and the biological yields were decreased with the delay of sowing times. The regression model between sowing times and biological yields was constructed： the regression model of fresh yields and sowing times is yfresh=196.646-4.625 x, and that of hay yields and sowing times is yhay=58.253-1.423 x. Between July 23rd and August 30^th, the fresh yields and hay yields of forage sorghum were averagely reduced by 4.625 kg/20 m^2 and 1.423 kg/20 m^2 respectively when the sowing times were delayed by every one day. [Conclusion]The regression model constructed in this study provides scientific basis for improving the production level of forage sorghum in autumn idle land.

关 键 词：秋闲田 饲用高粱 播期 生物产量 回归分析 

分 类 号：S514.04[农业科学—作物学]