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稻田杂草种类较多,危害较重的主要有稗草,牛毛毡及其它莎草科杂草。在秧田用人工除草,花工量大,效果差,如用化学除草,可明显提高秧苗素质,费省效宏。一、常规秧田。根据具体情况,可选择播种前后和苗期二个时期施药。 1、播种前或播种后出芽前施药。秧田平整好后,保持浅水层3—5厘米,用毒土法施药,施药后1—5天播种未催芽的哑谷,待谷芽露白立即排干田水,如播芽谷应在约后4—5大换水播种;也可在播种哑谷后当日施药,待谷种现芽即排水。可选用以下药剂(每亩用药量): ①96％禾大壮乳油150—175毫升,在平整秧田最后一次耙田前毒土法(月干土或干沙拌药)施药,然后将药剂耙入土中,当天播种哑谷;也可在平整好
More types of weeds in paddy fields, the more serious are barnyard grass, cattle blankets and other sedge weeds. Artificial weeding in the seedling, abortion, poor results, such as the use of chemical weeding, can significantly improve the quality of seedlings, cost-effective macro. First, the conventional seedling. According to the specific circumstances, can choose before and after sowing and seedling two periods of application. 1, pre-sowing or sowing before spraying application. Seedling after the formation of a good, keep the shallow layer 3-5 cm, with poison soil method of application, sowing 1-5 days after application of non-germination of the dull valley until white germ white immediately drained field water, such as sowing bud should be at 4-5 days after the big change of water sowing; also sow the dull day after the application of pesticides, to be the kind of grain that is draining the valley seed. The following agents can be used (dosage per acre): ① 96% Wo large strong oil 150-175 ml, in the formation of seedling before the last harrow field poisonous soil method (dry soil or dry sand mixed drug) application, and then drug harrow Into the soil, the day sowing dumb valley; also in the formation of good