播期、播量与行距对秋闲田饲用谷子草产量的影响  

Effects of Different Sowing Date, Sowing Quantity and Row Spacing on Grass Yield of Fodder Millet in Autumn Idle Land

作　　者：周汉章[1] 刘环 魏志敏[1] 贾海燕[1] 周新建 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050035 [2]河北省深泽县农业局,河北深泽052560 [3]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11期28-34,共7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]研究不同播期、播量与行距互作效应对秋闲田饲用谷子草产量的影响。[方法]以冀谷18为材料,采用三元二次回归正交旋转组合设计进行田间试验。[结果]播期、播量、行距各试验因素均对草产量有重要影响,其中,播期对草产量的影响最大,其次是播量,行距的影响最小;参试因素互作效应的显著项及其强弱顺序为:播期+行距>行距+播量>播期+播量。构建了数学模型Y=20.471-49.458X_1+0.211X_2+1.604X_3-0.010X_1X_2-0.030X_1X_3-0.039X_2X_3+0.030X_1~2+0.002X_2~2+0.118X_3~2,明确了以经济效益为考核指标的最优方案:播期为8月9日,行距为25 cm、播量为45 kg/hm^2。该方案草产量为7 219.11 kg/hm^2,经济效益为10 378.67元/hm^2,较优方案增收1 778.67元/hm^2,增幅20.68%。[结论]为晚播秋闲田饲用谷子生产提供了技术支撑。Objective]To assess the interactive effects of sowing date,sowing quantity and row spacing on grass yield of fodder millet in autumn idle land.[Method]Field trial was conducted with quadratic orthogonal rotational combination design with three factors by using a fodder millet variety of Jigu No.18.[Results]The sowing date,sowing quantity and row spacing had important effects on grass yield.The highest influence on grass yield was observed in sowing date,followed by sowing quantity and row spacing;the significance order of interactive effects of the tested factors was as followed:sowing date and row spacing>row spacing and sowing quantity>sowing date and sowing quantity.Furthermore,a mathematical model was established:Y=20.471-49.458X_1+0.211X_2+1.604X_3-0.010X_1X_2-0.030X_1X_3-0.039X_2X_3+0.030X_1~2+0.002X_2~2+0.118X_3~2;the best scheme using economic benefit as evaluation index was determined:sowing date was August 9^(th),row spacing was 25 cm,and the sowing quantity was 45kg/hm^2.Under this scheme,the grass yield was 7 219.11 kg/hm^2;the economic benefit was 10 378.67 yuan/hm^2,which was increased by 20.68%compared to that of the better scheme(1 778.67 yuan/hm^2).[Conclusion]The results provide technical support for the late sowing fodder millet production in autumn idle land.

关 键 词：秋闲田 饲用谷子 播期 播量 行距 草产量 

分 类 号：S515.04[农业科学—作物学]