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采用田间试验和仪器测定分析方法研究了40.3%苯噻酰.吡嘧泡腾颗粒剂对水稻田间主要杂草的防除效果、杂草防除后田间不同高度层的透光率变化以及水稻产量的变化。结果表明,施用40.3%苯噻酰.吡嘧泡腾颗粒剂能有效控制水稻田间杂草,对稗草、异型莎草、鸭舌草的综合密度防效为91.56%～99.80%,综合鲜重防效为93.02%～99.82%;施用40.3%苯噻酰.吡嘧泡腾颗粒剂后,水稻田间的透光率显著提高,有效改善了田间光照条件,增产效果显著。40.3%苯噻酰.吡嘧泡腾颗粒剂防除稻田杂草的推荐剂量为241.8～483.6 g/hm2。
Field experiments and instrumental analysis methods were used to study the control effects of 40.3% phenylthiono-pyrazole effervescent granules on the main weeds in paddy field, the changes of transmissivity and the yield of rice in different height layers after weed control . The results showed that the control effect of 40.3% phenylthiopyrazole effervescent granules on paddy field weeds was 91.56% -99.80% for the integrated density of barnyardgrass, The control effect was 93.02% ~ 99.82%. After the application of 40.3% phenylthiopyrazole effervescent granules, the light transmittance of rice field increased significantly, which effectively improved the light conditions in the field and the yield was significantly improved. The recommended dosage of 40.3% phenylthiono pyrithione granules for controlling weeds in paddy field is 241.8 ~ 483.6 g / hm2.