First, the seedling stage of rape seedlings is dominated by the growth of roots, stems, leaves and other vegetative organs. This stage mainly controls grass damage, aphids, cabbage caterpillars and viral diseases.
1. The grass-fighting paddy field is mainly based on Mai Niang. It is sprayed with 10.8% of high-efficiency grass cover per acre, 30 ml of 5% or 50 ml of purified grass, and 60 kg of water, and applied in the three to five-leaf stage of grass weeds; The dry land is mainly composed of pork chop, big nest vegetables and mother-in-law. In the second to fourth leaf stage of weeds, 50% of high-gram 40 ml per acre is sprayed with 60 kg of water.
2, the temperature of the locust is high, the drought is less rain, the rapeseed grows green, which is beneficial to its reproduction. It can be controlled by 10% hero or 4.5% beta-cypermethrin.
3, cabbage caterpillars mainly feed on the leaves, causing leaf holes or nicks, eating leaves when severe, can be controlled with 50% phoxim EC or 2.5% Uranus EC or 2.5% Kung Fu EC 3000-4000 times.
4. Viral disease, also known as mosaic disease, is a common disease. It has a great impact on yield when it occurs seriously. At the same time, the oil content of rapeseed is reduced, the resistance of infected plants is reduced, and it is easily infected by other diseases. The disease mainly relies on the spread of mites in the field. Therefore, the prevention and control of aphids is the key.
Second, the flowering period in this period to prevent and cure sclerotinia disease, downy mildew, and treat aphids.
1. Sclerotinia sclerotiorum can occur from seedling stage to maturity, but it is the most abundant in the flowering stage. If the flowering period is hot and rainy, and the amount of bacteria is large, the disease may be popular. Spray 50% carbendazim WP 1000 times solution from the initial flowering stage to the full flowering stage. When applying the medicine, it should be sprayed on the middle and lower stems and leaves of rapeseed to improve the control effect.
2, downy mildew pathogens damage rapeseed flower buds, can cause swelling and bending into a "faucet turn" shape, it is commonly known as "faucet disease." When the diseased leaf rate reaches 10% at the initial flowering stage, the first control is carried out, and the prevention and control is performed once every 5-7 days. Commonly used agents are 50% carbendazim WP, or 75% chlorothalonil WP.
3, aphid this period, aphids endanger the inflorescence, resulting in stagnant inflorescence growth, deformity, and reduced results. It can be combined with the prevention and treatment of sclerotinia sclerotiorum and downy mildew disease, that is, in the liquid medicine for preventing or treating sclerotinia or downy mildew, Dagongchen or Qijing is added to treat the disease.
Sodium Sulfide , also known as stinky alkali, smelly soda, yellow alkali, is inorganic compounds. Appearance is yellow or red flake.
Dye industry for the production of sulfur dyes, vulcanized green and vulcanized blue raw materials.
The dyeing and finishing industry is used as a dye aid for dissolving sulfur dyes.
Leather industry for the hydrolysis of raw leather hair removal, but also for the preparation of sodium polysulfide to accelerate dry skin immersion soft.
The paper industry is used as a cooking agent for paper.
The textile industry is used for manure fiber denitrification and reduction of nitrides, as well as cotton fabric dyeing mordant.
Pharmaceutical industry for the production of phenacetin and other antipyretic drugs.
Also used for sodium thiosulfate, Sodium Hydrosulfide , sodium polysulfide and so on.
Sodium Sulfide
Sodium Sulfide,Sodium Sulfide 60%,Sodium Sulfide Yellow Flakes,Sodium Sulfide Red Flakes
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