The weak seedlings of topdressing wheat have fewer leaves and less secondary roots due to overwintering and are prone to frost damage. It is necessary to combine the roots of cultivator loose soil with roots from the end of December to the beginning of January of the next year, topdressing organic fertilizer 2500 kg, or topdressing 20-25 kg of phosphorus and potassium fertilizers. .
Covering cattle and manure to cover cattle and manure in weak wheat seedlings can not only increase the ground temperature, protect the roots, but also promote the growth of roots, which will increase the fertility of wheat growth in the coming spring. Method is: the cow horse dung fine, sprinkled above the wheat seedlings, the thickness of 2 to 3 cm is appropriate. Before the turn of the spring wheat in the following year, we used bamboo rafts to pull the cow's manure into the middle of the wheat ridge.
Pouring frozen water to seal the frozen water can stabilize the temperature, sink the soil, crush the crushed rubbish to avoid leakage of frozen roots; promote the formation of strong turf before winter and enhance the cold resistance of wheat seedlings. Watering should be carried out at an average daily temperature of 2°C to 4°C. The amount of water should not be too large, and the water potential should not be excessive, so as to avoid soil silting and burying seedlings. After pouring, they should be timely scratched to prevent soil compaction.
The wheat field covers “ground cover grass, which prevents freezing and water retention and weeds.†After winter irrigation and fertilization, a layer of grass and wheat stubble is added to the wheat fields, which is conducive to wind protection, antifreeze, heat preservation, and preservation, as well as prevention of prolonged growth. Wheat straw, rice straw, etc. can be chopped and covered. After the cover is covered with soil, the wind will be blown away. After the spring, the grass will be pulled out of the field.
Smoke fumes When frost comes, weeds can be ignited around wheat fields with moist firewood to create smoke and reduce heat radiation from wheat fields, which can effectively reduce freezing damage.
Intestinal localization was administered to reduce adverse effects.
Targeted site-specific release:
Two hours in gastric juice will not disintegrate or crack, dissolve within thirty minutes of disintegrating juice, providing a perfect solution for protein and peptide drugs and probiotics.
Enteric coated gelatin hollow capsule is made of gelatin and enteric coating material in gastric juice it will not collapse, but will release in the intestines as a collapse of a target product . It is often used for special packaging of drugs and health cae products which are irritating to the stomach or unstable under acid, or dissolved and effected in the intestine.
Intestinal location administration can improve the efficacy of drugs, reduce the dose and the adverse reaction, brings the convenience to patients. Moreover , it can avoid the degradation of gral protein, polypeptide or health care products and provide the best absorption sites for them.
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