Yellow, weak, dead seedling inducement
Poor soil moisture, rapid decline in temperature: autumn and winter 2009 wheat yellow, weak, dead seedlings are mostly caused by drought. There are differences in stress resistance among wheat varieties. Former use of drugs is improper, and damage to the next crop of wheat: If a long-acting herbicide is used when herbicides are used to weed the former crops, they will generally cause yellow and weak seedlings of the loquat wheat until they die. Soil preparation and sowing: if using a rotary cultivator for soil preparation, the plough layer is shallower, the soil is easily bridged and empty, causing weak seedlings. Although wheat can grow at a seeding depth of about 10 cm, when it exceeds 5 cm, the root system is stunted and the seedlings are thin and weak. The stems in the ground are long and curved serpentine. The tillering is delayed or absent. Wheat seedlings died when they were “one single needle†(without delivery). In cold, severe climate conditions, yellow seedlings and weak seedlings are often rapidly transformed into dead seedlings. It is not as good as ploughing to grow the wheat seedlings that are more commonly found in production. The larger the sowing volume, the more basic seedlings are, and there are phenomena of competition for water, competition for fertilizer, and glory among individuals, resulting in short and thin leaves and dead leaves. In addition, winter wheat wheat spiders, aphids and other insect pests, root rot, sheath blight is also caused one of the causes of winter wheat yellow, weak, dead seedlings.
Responses
Scientific selection of wheat varieties: Can not simply use semi-winter varieties to negate weak spring varieties, nor can they be applied in reverse.
Seed coating or dipping seed dressing: The main purpose of seed coating or seed dressing is to reduce the chances of disease and insect pests occurring and reduce the degree of occurrence, so as to promote strong seedlings and avoid yellow and weak seedlings. The prevention of disease is usually done by selecting the appropriate music or the enemy's fentan for coating; seed dressing with Miaowang, the growth of wheat seedlings is robust; seed coating or seed granulation with anti-drought agent or moisture-retaining agent is very resistant to drought at the seedling stage. benefit. The corresponding coating agent or seed soaking agent and seed dressing agent should be selected according to the different causes of yellow and weak phenomena.
Improve the quality of soil preparation: In production, large-scale mechanical deep plowing techniques should be promoted. Deep plowing should be close to or more than 25 cm, break the bottom of the plow, deepen the plow layer, and improve soil water storage capacity; promote and promote the method of soil preparation combined with deep plowing and rotary tillage. Rotary ploughing shallow layer. Plots for single-rotation work should be combined with culms to achieve virtual reality.
Wintering water supply: The phenomenon of “front pouring and back freezing†can never be seen. When the plough layer soil water content is higher than 17%, the water supply time can be delayed or no water is supplied; when the soil moisture content is less than 16%, the water supply has a significant effect.
Intertillage and repression: For the field of water supply, it is necessary to loosen or loosen the soil in time, break the soil compaction, and prevent cracking and loss. Repression should be combined with soil, lyricism, seedling conditions and weather. Earth-wet heavy wheat stubble with hard topsoil cannot be repressed. The soil can't be repressed by excessive humidity. Generally weak seedlings cannot be repressed. Drought years should be suppressed in advance.
See seedlings for fertilizer application: Yellow, weak, and dead seedling fields caused by improper use of herbicides or excessive application of herbicides in the previous herbicides. In time of spraying Tianda 2116 (grain-specific type), 0.3% is added at the same time. Urea, or with EM original dew, Hui Man Fung liquid fertilizer, green wind 95, Gao Mei Shi sprayed once.
Beeswax is obtained from the honeycombs of bees after the Honey has been removed by draining or centrifuging. The combs are melted with hot water, steam or solar heat; the melted product is filtered and cast into cakes of yellow beeswax. With detoxification, wound healing, tissue regeneration, pain relieving effect. Commonly used in the ulcer not healing, ecthyma erosion, ulceration of trauma, burn and scald.
Beeswax
Bee Wax, Organic Beeswax, Pure Natural Beeswax, White Refined Beeswax
Easy Food (Jiaxing) Co., Ltd. , https://www.jxeasyfood.com