On the basis of high-quality sowing in the right time, aiming at the maturity, uniformity and completeness of the wheat seedlings, the weak control will be promoted, the group will be suitable, the individual will be robust, and the relationship between seedling growth and nutrient storage will be coordinated to ensure the safe wintering of the wheat seedlings. The winter wheat antifreeze mainly has the following four points:
Cover the grass. Before the winter, between 300-400 kilograms of wheat bran, crushed wheat straw or other plant wastes per acre, it can protect the soil and prevent freezing. After the decay, it can also improve the soil and fertilize the soil. It is the drought-resistant and anti-freezing of wheat. Effective measures to increase production.
Earthen roots. When the wheat seedlings are about to stop growing before wintering, combined with the raking and buckwheat roots, it can effectively prevent the wheat from freezing during the wintering period, especially in the years when the freezing damage is serious, generally increasing the yield by 5%~10%.
Cover the feces. After the wheat enters the wintering period, a layer of manure (commonly known as “warm ditchâ€) can be applied to the ridges to protect the wind from moisture, freeze and freeze, and supplement the nutrients for the growth of the wheat seedlings. The thickness of the cover manure is 3-4 cm. The manure is applied for about 5 vehicles per mu. When it is insufficient, the wheat field in the late evening wheat field, the shallow wheat field, the wheat field in the sand, and the wheat field in which the weak winter varieties are sowed should be covered first.
Spray chlormequat. When freezing damage occurs during the wintering period of wheat, spraying wheat seedlings with 0.3%-0.5% chlormequat solution can inhibit plant growth, resist or reduce the occurrence of freezing damage.
Centrifuge tubes are used in laboratory centrifuges, machines that spin samples in order to separate solids out of liquid chemical solutions. The centrifuge tubes can be made of glass or plastic, and resemble miniature test tubes with tapered tips. They are mainly used in series test like the centrifuge of nucleic acid
50 ml Centrifuge Tubes,15 ml Centrifuge Tubes,5ml Centrifuge Tubes,Centrifuge Tube Holder,Micro centrifuge Tubes
Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yonyuetube.com