谷田单子叶杂草对谷子产量损失的影响  

Impacts of Monocotyledon Weeds on Millet Yield Lossin Foxtail Millet Field

作　　者：周汉章[1] 侯升林[1] 宋银芳[1] 赵宇[1] 董立[1] 贾海燕[1] 吕芃[1] 王新玉[1] 刘恩魁 薄奎勇[1] 

机构地区：[1]国家谷子改良中心/国家高粱改良中心河北分中心/河北省农林科学院谷子研究所/河北省杂粮研究重点实验室,石家庄050035 [2]武安市农牧局,河北武安056300

出　　处：《中国农学通报》2013年第12期179-184,共6页Chinese Agricultural Science Bulletin

基　　金：河北省科技支撑计划项目"广谱型谷田专用除草剂"谷友"的使用技术研究与推广应用"(09250307D);农业部公益性行业科研专项"秋闲田一年生饲料作物优化栽培技术研究与示范"(20120304201)

摘　　要：为了科学管理谷田杂草,探索谷田单子叶杂草对谷子的危害特征。采用田间小区试验和SPSS18.0非线性回归分析的方法,对几个主要的经验模型进行模拟和比较。结果表明:谷子产量损失率与单子叶杂草密度呈极显著正相关;幂双曲线函数模型拟合优度最大,高达99.6%,残差平方和(23.947)最小,是模拟单子叶杂草与谷子竞争关系的最优模型。预测式为Y=d0.083/(0.793+0.013d0.083),单子叶杂草种间最大竞争力和种内竞争力分别为1.2610和0.0164,谷子产量最大损失率为76.92%,弹性系数r=0.083<1,谷子产量损失率随单子叶杂草密度的增加而减速增加。本研究将为谷田单子叶杂草综合治理提供理论支撑。The aims were to scientifically monocotyledon weeds on millet. The plot analysis were used to simulate and compare control monocotyledon weeds, experiment and the method of and explore the damage law of SPSS 18.0 nonlinear regression main experience models. The results showed that, it was very significant positive correlation between millet yield loss and monocotyledon weeds density, power hyperbolic function model goodness-of-fit was maximum, as high as 99.6%, the sum of squared residuals （23.947） was minimum, it was the optimal model to simulate the competition relation between monocotyledon weeds and millet. Prediction equation was Y=d^0.083/（0.793 ＋ 0.013d^0.083）, the biggest competitiveness of interspecific and intraspecific in monocotyledon weeds were 1.2610 and 0.0164 respectively, millet yield maximum loss rate 76.92%, elastic coefficient r=0.083〈1, millet yield loss increased slowdown with the increase of monocotyledon weeds density. The study provided theoretic support for comprehensive control monocotyledon weeds.

关 键 词：谷田 单子叶杂草 预测模型 

分 类 号：S451.1[农业科学—植物保护]