当前位置: 首页 > 文章 > 水直播稻田稗、水莎草的危害损失与复合防除指标 上海农业学报 2001,17 (2) 84-86
Position: Home > Articles > STUDY ON INFESTATION,DAMAGE AND COMPLEX CONTROL TARGETS OF Echinoch loa crusgalli AND Juncellus serotinus IN WET-LAND DIRECT-SOWING RICE FIELDS Acta Agriculturae Shanghai 2001,17 (2) 84-86

水直播稻田稗、水莎草的危害损失与复合防除指标

作  者:
管丽琴;陈建生;陈根兴;程梅初;沈其龙;张颂函
单  位:
上海市农药检定所;上海市嘉定区农业技术推广服务中心
关键词:
水直播稻;稗;水莎草;产量损失预测式;复合防除指标
摘  要:
在稗、水莎草自然混生条件下对水直播稻产量损失测定的基础上 ,建立了水稻产量损失预测模型 :Y =36 8.836 2 - 8.4 888X1- 0 .352 4X2 ,并进一步推导出 5种不同除草措施的经济阈值 ,提出相应的复合防除指标 ,即水直播稻田杂草密度分别达到稗 1株 /m2 和水莎草 30株 /m2时 ,需用“二氯喹啉酸 +吡嘧磺隆”等除草措施进行防除。
译  名:
STUDY ON INFESTATION,DAMAGE AND COMPLEX CONTROL TARGETS OF Echinoch loa crusgalli AND Juncellus serotinus IN WET-LAND DIRECT-SOWING RICE FIELDS
作  者:
Guan Liqin Chen Jiansheng Chen Genxing Cheng Meichu Shen Qilong (Jiading District Agro Technology Extension Service Center, Shanghai 201800) Zhang Songhan (Shanghai Municipal Pesticide Testing Station, Shanghai 201103)
关键词:
Wet land direct sowing rice ; E.crusgalli ;J.serotinus ;Prediction model of rice yield loss ; Complex control target
摘  要:
Based on the determination of yield loss of wet land direct sowing rice in natural mixed occurring conditions of E.crusgalli and J.serotinus ,the prediction model of rice yield loss( Y =368.8362-8.4888 X 1 -0.3524 X 2 ) was established and the economic thresholds under 5 kinds of weeding measures were further derived. Meanwhile, the corresponding complex weed control targets were advanced, i.e. weeds should be controlled by application of 50%Quinclorac + 10%Pyrazosulfuron ethyl or other weeding measures when weed densities in direct sowing rice fields reached 1 plant/m 2( E.crusgalli ) and 30 plants/m 2( J.serotinus ),respectively.

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