Winter wheat in North China "test soil formula, package fertilizer" program First, the characteristics of winter wheat need fertilizer: Wheat is a gramineous crop, must root system. The wheat needs more fertilizer, and about 3.0 kg of pure nitrogen, 1.25 kg of phosphorus, and 2.5 kg of potassium are needed for each 100 kg of wheat grain. A sufficient and reasonable supply of nitrogen, phosphorus, potassium and moderate amounts of trace elements are the basis and guarantee for high yield and quality of wheat. Second, the winter wheat fertilization existing problems: 1, partial application of nitrogen and phosphorus fertilizers, neglect of potassium fertilizer: NPK is the three major nutrients necessary for normal growth of wheat, only with the application, in order to cooperate with each other, promote each other, increase production effect is a single application of which Any nutrient can not reach. Excessive nitrogenous fertilizer and insufficient potassium fertilizer can cause wheat seedlings to grow too prosperous before winter and are prone to frost damage. At the later stage, they show late-maturing glutinous rice, they are easy to fall down, and their grain weight is significantly reduced. The yield is not high. Therefore, excessive application of nitrogen fertilizer will inevitably cause the loss of wheat production, only the right amount of timely supply of nitrogen nutrition can ensure high yield and stable wheat production. A sufficient quantity of potassium fertilizer can significantly increase the resistance to disease, drought and frost resistance of wheat, and it has a good effect on stout sturdy, tough, lodging resistance and normal yellowing of wheat. In the process of wheat growth, the supply of potassium nutrition is insufficient. The most obvious manifestation is the scorching of the leaf margins, and even the entire leaf is burning, the wheat roots are stunted, the grains are thin, the stems are thin and easy to fall, the disease resistance is poor, and the yield is not high. 2. The selected fertilizer has insufficient stamina: the growth period of wheat is long, and the peak of fertilizer requirement is in the jointing and filling stages in the coming year. Therefore, choosing a long-term fertilizer base fertilizer is the basis of high wheat yield. In recent years, some farmer friends have chosen fertilizers, especially compound fertilizers, when they grow wheat. They have a short fertilizer effect, and they have no stamina. As a result, the growth of wheat seedlings was too prosperous in wheat years before, but the growth became weaker after returning green years later. Affect production. 3. No application of trace element fertilizers: Trace elements play an important role in the normal growth of wheat. The lack of certain trace elements may cause serious impact on the yield of wheat. For example, when wheat is deficient in zinc, the long-term dwarfing of the wheat seedlings is not long. When the jointing stage wheat plants are pulled out, the plants are dwarf; when the wheat is deficient in boron, the wheat ears are not true. Therefore, the full and appropriate supplementation of trace elements is the most economical and effective method for increasing wheat yield. 4. The top-dressing method is unscientific: it saves time and labor and uses topdressing methods to top-dress fertilizers, regardless of fertilizer utilization. Fertilizer application will result in the volatilization of effective nutrients, especially fertilizers such as urea, which will reduce the fertilizer efficiency. Therefore, it is recommended that the topdressing method should be applied as much as possible when topdressing wheat. Fertilizer use efficiency of top dressing fertilizer is much higher than that of ground application. This will not only reduce our economic investment, but also receive good results. As the saying goes, "One point of cultivation and one point of harvest." Third, the Zhongde brand series of compound fertilizer is a good quality guaranteed fertilizer: Zhongde brand compound fertilizer is a high-quality fertilizer produced by a German-owned company-Zhongde Fertilizer (Yantai) Co., Ltd. The fertilizer uses a fertilizer formula specially designed by German agricultural experts for China's rural areas. There are two series of available fertilizers and long-term fertilizers. The outstanding characteristics of the Zhongde brand long-acting fertilizers are: high total nutrient content (usually around 50%), high fertilizer utilization rate, and nitrogen source mainly comes from large-particle urea. The speed of nutrient release is moderate. In the early period, it can avoid excessive release of fertility before winter, excessive consumption of nutrients, and long-term freeze damage of wheat seedlings. It can maintain stable and lasting nutrient supply in the later period to avoid premature decomposing of wheat. The utilization rate is more than 20% higher than the normal small-particle urea. This long-lasting fertilizer is 20 days longer than general fertilizers and has a strong stamina. It is particularly suitable for crops with longer growth periods such as wheat and cotton. Formulas suitable for wheat as base fertilizer are: 19-19-19, 18-18-18, 17-17-17, 19-25-12, 18-28-10; Formulas suitable for wheat topdressing are: 32-0- 18,30-8-12,30-5-14. Fourth, in North China winter wheat fertilization technology: Shizujifei must increase the application of organic fertilizer to increase organic matter content, fertilize the soil, usually about 1,000 kg of farmyard manure. On the basis of applying organic fertilizer, Zhongde can use 19-19-19, 18-18-18, 17-17-17, 19-25-12, 18-28-10 compound fertilizer 20-40 per acre. Kg, or with 30 kg of diammonium phosphate plus 20 kg of urea plus 20 kg of Red Bull brand potash fertilizer base fertilizer. The application of basal fertilization is the basis for high yield and stable production of wheat. Reapplying jointing fertilizer to see the seedlings applying fertilizer, wheat tiller, good seedlings, strong growth, should be appropriate late, and reduce the amount of application, after the jointing Shi Shide 32-0-18, 30-8 -12,30-5-14 Compound fertilizer 15-25 kg. Wheat has fewer tillers, poor seedlings, and weak growth. It should be applied early and increase the dosage. Foliar topdressing in some areas, each year in mid-May is dry hot wind season, with lion horse brand leaf fertilizer "Kang supplement fertilizer" (diluted 3000-5000 times) and "fruit king" (600 times diluted) foliar Spraying 1-2 times, interval 7-10 days, can increase potassium fertilizer and medium and micronutrient nutrition, effectively prevent the damage of hot and dry wind, increase wheat grain weight. Yantai Agricultural Production Material Technology Co., Ltd. Tel
Standardized Herbal Extract
A standardized herbal extract is an herb extract that has one or more components present in a specific, guaranteed amount, usually expressed as a percentage. The intention behind the standardization of herbs is to guarantee that the consumer is getting a product in which the chemistry is consistent from batch to batch. This practice has developed out of the drug model of herbal medicine, in which modern scientists have attempted to identify the components of a plant that have definite pharmacological activity in the body. Unfortunately, while scientists can isolate many constituents from an herb and discover how particular chemicals may act in the body, they inadvertently remove or overlook components that may contribute to the activity of the whole herb. Consequently, standardization may concentrate one constituent at the expense of other potentially important ones, while changing the natural balance of the herb`s components.
Standardized Herbal Extract
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