当前位置: 首页 > 文章 > 杂草对油菜籽产量的影响及其复合防除指标 上海农业学报 1998 (1) 67-69
Position: Home > Articles > INFLUENCES OF FIELD WEEDS ON RAPE YIELD AND COMPLEX CONTROL INDEXES FOR MAIN WEEDS Acta Agriculturae Shanghai 1998 (1) 67-69

杂草对油菜籽产量的影响及其复合防除指标

作  者:
陈立华;王爱兴
单  位:
上海市宝山区植保植检站
关键词:
油菜;杂草;相关系数;正交试验;经济阈值;复合防除指标
摘  要:
采用正交试验方法,按多元回归方法建立油菜籽产量损失率的预测模式:Y=0.012ZX1+0.0311X2+0.0172X3+4.2587,复相关系数R=0.8766,F=42.298,预测模式的准确率达86.8%。经统计分析,油菜田间杂草防除的经济阈值为69kg/hm2,可据此制定出油菜田间主要杂草的复合防除指标。
译  名:
INFLUENCES OF FIELD WEEDS ON RAPE YIELD AND COMPLEX CONTROL INDEXES FOR MAIN WEEDS
作  者:
Chen Lihua; Wang Aixing(Station of Plant Protection and Quarantine of Baoshan District, Shanghai 201901)
关键词:
Rape;Field weed; Correlation coefficient;Orthogonal experiment;Economic threshold;Complex control indexes
摘  要:
Using orthogonal experiment and multiple regression methods,the predictingmodel for the loss rate of rape yield after weed infestation was set up as follows:Y=0. 0122X1+0. 031 1X2 + 0. 017 2X3+4. 258 7, multiple correlation coefficient R = 0. 876 6, F= 42. 298.The accuracy of the predicting model is 86. 8%. Through statistical analysis, theeconomic threshold for weed control in rape fields is 69 kg/hm2, and the complex controlindexes for main weeds in rape fields were fixed.

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