Graingrass, commonly known as “grass wolfberry†is the companion weed of the valley, and the strong ability of the sorghum sorghum to carry out the cropping, strong vitality, early maturity and easy falling of grains, and easy to cross-spray with the millet are one of the important factors affecting the high yield of the millet. How to prevent valerian must first understand its source.
One, the source of wheatgrass
1, soil with species. "One-year-old valley, three-year-old hoe", the heavily-cropped land on which millet is planted often has a large amount of glutinous grass. After its seeds mature, it falls into the soil and can maintain its germination power for many years.
2, manure with species. The chicken manure and livestock manure that are applied to large fields often contain a large amount of seed of cerealgrass, and germinate seedlings when they encounter suitable temperature and humidity conditions.
3. The seeds enter Tian Valley through wind and rain. There are a lot of glutinous grasses on the plains, fields, plains and wasteland. Grains of glutinous rice are small, soft, soft, and mature seeds fall with the wind or fall into the farmland with rainwater.
4, thin seedlings, easy to breed cereal grass. When the seeding rate is small or when the seedlings are arid and less rainy, and the grain germination and seedling emergence are relatively small, due to the strong vitality of the grass that has been left in the soil, the productive force is very strong, thus causing a large number of cereal grasses.
Second, preventive measures
1, rotation down. The land that was planted with millet was changed to other crops such as corn, sweet potato, and sorghum within 2-3 years.
2. Deep plowing. Gulch grasses are buried in the soil and remain germinating for many years. If they are turned to the surface of the soil, they can germinate and sprout. Therefore, deep plowing should turn most of the seeds on the earth's surface into 15-20 cm soil layers so that they cannot sprout.
3, timely removal of cereal grass. Gulch is characterized by its slender leaves, thin stems, prominent stem segments, mostly dark green or light red seedlings, shallow roots, and stems exposed on the surface. When the seedlings should be carefully identified, remove the seedlings of wheatgrass, clean, when the heading of wheatgrass should be promptly removed to prevent the next year left a lot of cereal seed.
4, high-temperature composting. Organic fertilizers, which are made from straw and weeds as raw materials, must be fully decomposed after high temperatures in summer to kill weed seeds and then apply them to farmland.
5, pastoral cleaning to prevent intrusion. It is necessary to remove the weeds in the fields, fields and roads in time so as to reduce the source of wheatgrass in the valley next year.
Sodium Tert-butoxide CAS No.865-48-5
Sodium Tert-butoxide Chemical Information
Density 1,104 g/cm3
Boiling Point 180°C/1mmHg
Melting Point 180 °C
Molecular Formula C4H9NaO
Molecular Weight 96.103
Flash Point 12°C
Storage condition Flammables area
Water Solubility reacts
Sodium Tert-butoxide Structure
Sodium Tert-butoxide Application
1. Used as an intermediate for organic synthesis and Pharmaceutical Intermediates
2. As a strong base, it is widely used in the condensation, rearrangement and ring opening reactions in organic synthesis such as chemical, pharmaceutical and pesticide.
Sodium Tert-Butoxide,Sodium Tert Butoxide Cas No,Sodium Tert Butoxide Synthesis,Sodium Tert-Butoxide Mechanism
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