What herbicides are suitable for autumn radish field
Pre-sowing soil ban, you can choose 48% trifluralin EC 100-150 ml (dosage per mu, the same below), 48% trimethoprim EC 200 ml, 33% herbicide EC 100-150 ml, 50% Acetochlor EC 75-150 ml, spray 50 kg of water respectively. Fluralin and other easy photolysis, volatilization, reduce efficacy, immediately after spraying with tooth rake into the soil 2-3 cm. These herbicides have good control effect on barnyardgrass, dogtail grass, Saxifraga, and broad-leaved weeds such as amaranth, Polygonum, Chenopodium and so on. After sowing and pre-seedling soil treatment, you can choose 48% Rasol EC 200ml, 25% Xicaoling EC 100ml, 20% legume water agent 700ml-1000 ml, 50% trimethoprim wettable powder 60g plus 48% trifluralin EC 100ml, 72% dulle EC 100150ml, 50% Dahuili wettable powder 100200g, spray 50-75kg of water on the soil. These agents can effectively control monocotyledonous weeds and some dicotyledonous weeds. After emergence, the stems and leaves can be treated with 10.8% high-efficiency Gengcao EC 20-35 ml, 10% Caoke milk koji 50-80 ml, 35% steadily killing 50-80 ml EC, spraying 50 kg of water to kill weed tender seedlings respectively. These agents can kill 3-5 leaf Gramineae weeds.
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When is the best time to apply wheat herbicide
The first emergence peak and the largest emergence peak of weeds in wheat field appeared 20 days after wheat sowing, and some weeds may have a small emergence peak in March of the following year. Through a large number of experiments and observation, there are three key periods in the period of weed control in wheat field. 1. Wheat is used to control weeds in wheat field after sowing and before emergence.
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What is the iron source in soilless cultivation?
The combination of organic fertilizer and inorganic fertilizer is organic fertilizer, which has complete nutrients and long-lasting fertilizer effect; chemical fertilizer is inorganic fertilizer, which has single nutrients, high content and quick effect. The fertilizer efficiency can be greatly improved by the combined application of organic fertilizer and inorganic fertilizer. Such as human and animal feces and ammonium chloride, calcium superphosphate, chlorination.
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