Soil testing and formula fertilization is based on fertilizer field test and soil test. According to crop fertilizer requirement, soil fertility performance and fertilizer effect, based on rational application of organic fertilizer, nitrogen, phosphorus, potassium and medium and trace elements are proposed. The variety, quantity, fertilization period and application method of the fertilizer.
2 fertilizer
In order to provide plant nutrients into its main function (GB/T 6274-1997 2.1.2).
3 organic fertilizer
Mainly derived from plants and/or animals, carbonaceous materials applied to the soil to provide plant nutrition as its main function (2.1.4 in GB/T 6274-1997).
4 inorganic [mineral] fertilizer
Fertilizers indicating the form of nutrients in the form of inorganic salts are made by extraction, physical and/or chemical industrial processes (GB/T 6274-1997, 2.1.3).
Note: Sulfur, calcium cyanamide, urea and its association products, bone powder superphosphate, is customarily classified as inorganic fertilizer.
5 single fertilizer
Among the three nutrients of nitrogen, phosphorus and potassium, there is only one nutrient indicating the amount of nitrogen, phosphate and potash (GB/T 6274-1997, 2.1.16).
6 main nutrients
The general term for the elements nitrogen, phosphorus and potassium in some countries (GB.T 6274-1997, 2.1.25.1).
7 times to take nutrients
In some countries, the general term for the elements calcium, magnesium, sulfur (GB / T 6274-1997 2.1.25.2).
8 micronutrients, trace elements micro-nutriment;
An essential, but relatively small, element of plant growth, such as boron, manganese, iron, zinc, copper, molybdenum or cobalt (GB. T. 2274-1997, 2.1.25.3).
9 nitrogen fertilizer
It has a nitrogen (N) quantity to provide a single fertilizer for plant nitrogen nutrition (3.7/NY in NY/T496-2002).
10 phosphate fertilizer
Phosphorus (P2O5) is indicated to provide a single fertilizer for plant phosphorus nutrition (3.8/ in NY/T496-2002).
11 Potash
It has a potassium (K2O) quantity to provide a single fertilizer for plant potassium nutrition (3.9/NY/T496-2002).
12 compound fertilizer
Among the three nutrients of nitrogen, phosphorus and potassium, there are at least two kinds of nutrients indicated by chemical methods and/or blending methods (2.1.17 in GB/T 6274-1997).
13 compound fertilizer
Among the three nutrients of nitrogen, phosphorus and potassium, at least two kinds of nutrients indicated by chemical methods are only chemically produced (2.1.18 in GB/T 6274-1997).
14 blended fertilizer
Among the three nutrients of nitrogen, phosphorus and potassium, there are at least two kinds of nutrients indicated by the dry mixing method (2.1/19 of GB/T 6274-1997).
15 plant nutrients
Chemical elements necessary for plant growth (2.1.24 in GB/T 6274-1997).
16 Fertilizer nutrients
Plant nutrients provided in fertilization (2.1.25 in GB/T 6274-1997).
17 Fertilizer effect
The fertilizer effect is the effect of fertilizer on crop yield, usually expressed as the yield increase and benefit of crops obtained from the application of fertilizer unit nutrients (3.23 in NY/T 496-2002).
18 Fertilization amount
The mass or volume of fertilizer or soil conditioner or nutrient applied to a unit area of ​​cultivated land or unit mass growth medium (2.1.23 in GB/T 6274-1997).
19 conventional fertilization
Also known as custom fertilization, refers to the average amount of fertilization in the first three years (mainly nitrogen, phosphorus, potassium fertilizer), fertilization varieties and fertilization methods (3.5 in NY/T 497-2002).
20 blank controls
No fertilizer treatment, used to determine the absolute value of fertilizer effects, to evaluate soil natural productivity and calculate fertilizer utilization (NY/T 497-2002 3.6).
21 formula fertilizer
Based on soil testing and fertilizer field trials, based on crop fertilizer requirements, soil fertility performance and fertilizer effects, various elemental fertilizers and/or compound fertilizers are used as raw materials to prepare for specific areas and specific crops. fertilizer.
22 Ground force
It refers to the cultivated land production capacity composed of the characteristics of the soil itself, natural background conditions and infrastructure level under the current management level.
23 Evaluation of cultivated land fertility
The evaluation of cultivated land fertility refers to the process of evaluating the potential bio-productivity of cultivated land according to the comprehensive characteristics of the climate, topography, soil parent material, soil physical and chemical properties, farmland infrastructure and other factors.
24 “3414†full implementation
The “3414†scheme design absorbs the advantages of less regression design and less efficiency, and is a widely used fertilizer effect field trial program. "3414" refers to three factors of nitrogen, phosphorus and potassium, four levels, and 14 treatments. The meaning of the four levels: 0 level means no fertilization, 2 level means local recommended fertilization amount, 1 level = 2 level × 0.5, 3 level = 2 level × 1.5 (this level is the level of excessive fertilization).
25 “3414†Partial Implementation Plan
To test the effect of one or two nutrients of nitrogen, phosphorus, or potassium, or for other reasons, the "3414" full implementation scheme cannot be implemented. The relevant treatment, that is, the partial implementation of "3414" can be selected in the "3414" scheme. This not only maintains the integrity of the overall design of the soil test and fertilization field trials, but also takes into account the different soil nutrient characteristics and different test objectives in different regions to meet the needs of different levels. For example, in some areas, the effects of nitrogen and phosphorus should be tested. The nitrogen and phosphorus binary fertilizer effect tests can be carried out on the basis of K2 as the base of the fertilizer, but three repetitions should be set.
Source: New Rural Business Network
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