1. Weeding and disease prevention: Fields that have not used herbicides before sowing can be used to control weeds from post-emergence to pre-three-leaf stems and leaves, using 23% nicotinamide, atrazine, 100-150 ml, water- 30- 50 kg spray control, while adding imidacloprid, chlorpyrifos, avermectin or pyrethroids and other insecticide mixed spray, can also treat pests such as gray planthopper, corn thrips and other pests. Prevention and control of corn seedling blight, spraying the base of corn stem with carbendazim or methyl thiophanate before the three-leaf control.
2, corn rough disease: the disease is a viral disease transmitted by the gray planthopper, which has been heavier in recent years. It is expected that this year's corn shrinkage disease in the county will be moderately light, and the garlic corn and spring corn will be moderately heavy.
Appropriate control period: after planting corn to pre-emergence and before corn 6 leaves (the corn leaf stage to 7 leaf stage is the sensitive leaf age of rough disease, and the safe leaf age after 10 leaves) And join the plant disease to prevent corn rough disease. Control method: combined with the use of herbicides , and the addition of insecticides such as imidacloprid to control the gray planthopper, so as to achieve the effect of pest control.
3, corn seedling blight. Moderately light occurs, and some plots are heavily biased. After the wheat field, the field area is large, and the seedling stage is consistent with the rainy season, which is easy to cause seedling blight.
Control methods: (1) Seed dressing before sowing, seed dressing with 0.2% seed amount of 2% tebuconazole. (2) Pay attention to the application of phosphorus and potassium fertilizer and apply zinc fertilizer. (3) For the prevention and treatment of chemicals, it may be sprayed with potassium dihydrogen phosphate by using 70% solution of 800 times or 80% of triazolyl. At intervals of 7 days, spray twice.
4, a generation of corn borer: a generation of corn borer is mainly harmful to spring corn and garlic corn. As of June 3, the black light led to a total of 13 corn borers. Due to the small planting area of ​​spring corn and garlic and corn, the adult eggs are concentrated and the larvae are relatively aggravated. It is expected to occur moderately this year, with an area of ​​about 0.8 million mu.
Control indicators: the rate of mosaic plants is 10%.
Control method: use 5% phoxim granules half a catty per acre, 6-8 kg of fine sand, sprinkle into the corn heart.
5, the second generation of armyworm. The second-generation armyworm is the main pest of the intercropped corn field. The larva bites the corn leaves and enters the gluttony stage after the third age. When it occurs seriously, the leaves of the corn seedlings are eaten up, resulting in production. The black light of our county began to see moths on May 6th, and on June 3, a total of 37 moths were attracted (the ratio of male to female was 1:1), and the moth was close to normal. Combined with meteorological conditions, the armyworms were moderately occurring, with an area of ​​about 0.3 million mu.
Control indicators: 10 kinds of corn interplanted with 10 insects.
Control method: 50% phoxim 1500 times liquid spray or control with pyrethroid pesticide spray.
6, two points of the night moth and the ground tiger. As of June 3rd. The black light of the county plant protection station did not induce the adult insects of the genus Noctuidae; a total of 31 small tigers were attracted, and the moth was higher than normal. This year is expected to be mild.
Control methods: First, with water, with 48% chlorpyrifos per acre a pound, with the water when pouring into the field; can also spray corn seedlings, the sprayer's nozzle is unscrewed, spurting the liquid through the plant. Pay attention to the amount of liquid to ensure that it penetrates around the corn roots.
More pesticide knowledge , please pay attention to China Pesticide Network
Here are all DEWALT power tools and the designated carbon brushes,motor brushes, electric brushes, motor brushes, electric motor brushes or simply brushes.
For each power tool, there are usually two carbon brushes to choose from: With automatic stop and without automatic stop. Carbon brushes with automatic stop have a spring through the length of the carbon brush. When the carbon brush wears out, the spring gets released, the current to the carbon brush gets interrupted and your power tools switches off at once. The advantage: No additional wear and tear to your power tool. Carbon brushes without automatic stop do not stop functioning at once, but performance of your power tool will detoriate rapidly. Although handy as a warning sign, this usually isn't very beneficial to your power tool.
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