Soil testing formula fertilization knowledge question and answer

Soil testing formula fertilization knowledge question and answer

1 What is soil testing and formula fertilization?
Soil testing and formula fertilization is carried out by testing soil nutrients. According to crop fertilizer requirements and target yields, experts recommend fertilizer application. Farmers apply fertilization formulas and fertilization methods according to experts. It mainly includes three parts: soil testing, reasonable formula and scientific fertilization.
2 Why do you need to conduct soil testing and formula fertilization?
There are 16 kinds of essential nutrients in plants. Carbon, hydrogen and oxygen are mainly derived from air and water. The main supply of soil can be divided into three categories: the first is that the relative amount of soil is relatively small, and the crops are more absorbed and utilized. Nitrogen, phosphorus and potassium are called a large number of elements; the second type is relatively high in soil, crops need to be less, like calcium, magnesium, sulfur, etc., called medium-quantity elements; the third type is low in soil. Crops are also rarely needed, mainly copper, iron, zinc, boron, molybdenum, and chlorine, called trace elements. When the supply of certain nutrients in the soil is insufficient, it is necessary to supplement the fertilizer containing the nutrient elements, what is missing, what to make up; how much to make up, how much to make, so that the crop is full and not wasted. Achieve the balance between soil fertility and crops.
3. What are the benefits of soil testing and formula fertilization?
There are four major advantages in soil testing and formula fertilization: first, through soil testing, lack of sputum and sputum, how much to make up, avoiding fertilizer waste, reducing investment, and improving fertilizer utilization; second, nutrient supply coordination, crop resistance The improvement of disease ability has improved the quality of agricultural products; thirdly, it has increased grain production and increased income; and fourth, it has saved resources and protected the environment.
4. What is the progress of soil testing and fertilization in Hua County?
In addition to establishing 32 soil nutrient location monitoring points in the county, Huaxian County tests hundreds of soil samples every year to understand the soil nutrient content, and distributes fertilizer application cards to farmers; it provides the best fertilization formula for fertilizer companies. The enterprise produces high-quality formula fertilizer according to the formula, and supplies it directly to the farmers through the “reliable agricultural resource distribution network”.
5. Why can't I apply a single fertilizer? Excessive fertilization?
First, the 16 elements necessary for crops are equally important and irreplaceable in crop growth. If one element is lacking, other elements can not be produced more efficiently. Second, if long-term application is given Nutrient elements, the accumulation of soil exceeds the crop requirement, affects the absorption of other elements by the crop, resulting in the lack of other elements, leading to poor crop growth. Third, the amount of fertilizer is too large, exceeding the crop requirement, affecting the normal growth of crops. It may even result in reduced production, degraded quality, increased disease, increased production costs, and low economic returns. Fourth, single fertilization and excessive fertilization will destroy nutrient balance and contaminate soil and groundwater. This reminds us that we should apply fertilizer reasonably, not single fertilization and excessive fertilization.
6. Is it better to use formula fertilizer than just one fertilizer?
Because the formula fertilizer is based on the test of soil nutrient content, according to the crop fertilizer characteristics, lack of sputum, strong target, high nutrient utilization rate, about 10% increase than the previous one or two elemental fertilizers.
7. How should wheat spring topdressing be carried out?
The spring topdressing of wheat should be “distributed by seedlings and classified management”. For the three groups of wheat with small population and weak individual, especially the insufficient application of base fertilizer, the wheat field can be combined with watering and embedding 7-10 kg of wheat seeds or 20-30 kg of ammonium bicarbonate to improve nutrition. In the first and second types of wheat fields with reasonable base fertilizer and normal growth, the topdressing and watering can be postponed to the jointing stage; for high-yield and potassium-deficient soils, quick-acting potassium fertilizer or nitrogen-potassium compound fertilizer should be applied.
8. What is the application effect of soil testing and formula fertilization?
Through the soil testing formula fertilization, the grain yield per acre is 30-50 kg, the cost is 3-10 yuan, and the total cost per mu is 30-60 yuan. Wang Zuzeng, a villager of Wangzhuang Town, Wangzhuang Town, the wheat fertilizer in the previous years was 100 kg of ammonium bicarbonate per acre, 100 kg of phosphate fertilizer, the investment of base fertilizer was about 46 yuan/mu, and the yield of wheat was 800 kg per mu. Li" brand formula fertilizer 20 kg / mu, investment less than 42 yuan, wheat yield of more than 900 kg per mu, increased income per mu more than 60 yuan.

Huaxian County Soil and Fertilizer Station
Author: Sui Ping Qin
From: Fertilizer technology
Phone: 5572020

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