播期对秋闲田饲用高粱单株生产力与产量的回归分析  

Regression Analysis of Different Sowing Times on Plant Productivity and Biological Yield 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] 侯升林[1] 李顺国[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 [2]深泽县职业技术教育中心,河北深泽 [3]深泽县农业局,河北深泽 [4]石家庄市农业局,河北石家庄

出　　处：《应用数学进展》2017年第7期831-840,共10页Advances in Applied Mathematics

摘　　要：【目的】为了探索播期与秋闲田饲用高粱单株生产力和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,对播期与饲用高粱单株生产力和草产量的关系进行模拟和比较。【结果】播期对秋闲田饲用高粱单株生产力和生物产量具有重要影响,其单株生产力和生物产量随播期的推迟而降低。构建了播期与单株生产力和生物产量关系的回归模型,单株鲜重与播期的回归模型为?鲜 = 0.618 ? 0.015x,单株干重与播期的回归模型为 ?干 = 0.184 ? 0.005x,单产与播期的回归模型为 ?单 = 29126.461 ? 711.448x。在7月23日至8月30日之间的播期每推迟1 d,饲用高粱的单株鲜重平均减少0.015 g,单株干重平均减少0.005 g,单产平均减少711.448 kg/hm2。【结论】本研究构建的3个回归模型,为秋闲田饲用高粱生产提供理论支撑。[Objective] The aim was to explore the linear regression prediction model of different sowing times and plant productivity, biological yields of forage sorghum in autumn idle land. [Method] To different sowing times and plant productivity, biological yields of forage sorghum for regression model analysis were simulated and compared by employing field plot experiment and linear re-gression analysis. [Results] The results showed that the forage sorghum sowing times on plant productivity and biological yields have important influence, and its plant productivity and biolog-ical yields were decreased with the delay of sowing times. To construct the regression model be-tween sowing times and plant productivity and biological yields, regression model of the single fresh weight and sowing times is ?fresh = 0.618 ? 0.015x;model of the single dry weight and sowing is ?hay = 0.184 ? 0.005x x;model of the per unit area yield and sowing is ?per = 29126.461 ? 711.448x. Between July 23rd and August 30th, the sowing times were delayed 1 d, and forage sorghum plant fresh weight was reduced by 0.015 g on average, and the average plant dry weight was reduced by 0.005 g, and the average grass yield was reduced by 711.448 kg/hm2. [Conclusion] This study has constructed the three regression model, which will provide theoretical support for the production of Forage Sorghum in Autumn Idle Land.

关 键 词：秋闲田 饲用高粱 播期 单株生产力 生物产量 回归分析 

分 类 号：S5[农业科学—作物学]