KR20180067825A - Compound fertilizer for reducing fertilizer application rate and fertilizing method using the same - Google Patents

Abstract

The present invention relates to a compound fertilizer for reducing a fertilizer application rate and a fertilizing method using the same. The compound fertilizer comprises a urea inhibitor and a compound fertilizer containing nitrogen (N), phosphorus (P), and potassium (K) as main components. A composition ratio between the compound fertilizer and the urea inhibitor is determined through the measurement of greenhouse gas emission from cultivated crops, and the greenhouse gas is N_2O, the compound fertilizer is 500 parts by weight, and the urea inhibitor is 1 part by weight. According to the present invention, through a simple and efficient method, which is to measure the emission of greenhouse gas (particularly, N_2O), a composition ratio between a compound fertilizer and a urea inhibitor is able to be quickly determined. Moreover, as a result of cultivating various crops by applying the compound fertilizer having the determined composition ratio, half of a conventional fertilizer standard amount, there is no difference in quality, quantity, or growth. In addition, through the compound fertilizer and the fertilizing method using the same, the amount of fertilizer applied is able to be reduced by 50%, and thus, the fertilizer is eco-friendly and economically excellent.

Description

[0001] The present invention relates to a compound fertilizer for reducing fertilizer application amount and a method for fertilizing the same,

The present invention relates to a method for controlling the composition ratio of a compound fertilizer for reducing the fertilizer application amount by using the change amount of the greenhouse gas emission amount according to the content of the urea decomposition inhibitor and using the compound fertilizer for reducing the fertilizer application amount with a controlled composition ratio This compound fertilizer is used to reduce the amount of fertilizer used to reduce the growth and yield of crops even if fertilizer is fertilized in less than the standard amount of fertilizer required for cultivation of crops. .

In terms of the use of domestic chemical fertilizers, the usage per unit area is decreasing every year from 382 kg / ha in 2000 to 340 kg / ha in 2007 and 311 kg / ha in 2008, but remarkably higher than other developed countries .

Comparing fertilizer usage from 2001 to 2003 among OECD countries, the United Kingdom is 338 kg / ha, France 227 kg / ha, Japan 305 kg / ha, and Korea 423 kg / ha, (ESI), published by the World Economic Forum (WEF) every three to four years, Korea ranked 138th among 146 countries in the fertilizer sector. In addition, along with chemical fertilizer, the input of livestock farmland continues to increase, resulting in salt accumulation due to nutrient surplus and eutrophication of surface water. As a result, the highest nutrient index among OECD countries is recognized as a country with a high possibility of environmental pollution caused by nutrient leaching.

Nitrogen, one of the major components of fertilizer, has a global warming effect that is 310 times higher than that of carbon dioxide (N ₂ O) among the six gases (CO ₂ , CH ₄ , N ₂ O, HFC, PFC, SF ₆ ) ).

Recently, the United Nations Framework Convention on Climate Change is being implemented to prevent global warming due to global warming due to the increase in greenhouse gas emissions. As part of this, the goal of reducing greenhouse gas emissions by 4% .

However, there is a problem in that the growth and the yield of the crops are decreased when the general fertilizers distributed on the market are reduced to below the standard application rate. In order to solve the above-mentioned problems of the environment, researches on a method of reducing the amount of chemical fertilizer to the optimum amount by improving various kinds of fertilizer to be supplied to agricultural land are also actively studied. Particularly, there have been many studies on the use of some organic acids, oligomers and the like as chelating means for promoting absorption of inorganic elements in plants. However, in this study, the composition of fertilizer to optimize the use of chemical fertilizer and the simple and efficient method to determine it are not suggested, and the criteria for the composition of fertilizer is unclear and only the amount of chemical fertilizer There is a problem that the composition of the fertilizer for optimizing the fertilizer can be determined.

In particular, Korean Patent Laid-Open Publication No. 10-2015-0095778 discloses that the urea decomposition inhibitor can be used in a wide range as a fertilizer without calculating the proper content of the compound urea decomposition inhibitor, so that the proper amount of the urea decomposition inhibitor It is difficult and unclear to judge the problem, and it is expected that the problem is caused by overproduction of unnecessary compound fertilizer. That is, it is possible to determine the proper amount of the urea decomposition inhibitor only through a long cultivation experiment, which is inefficient and inferior in economic efficiency.

Therefore, the present inventors have found that by measuring the amount of greenhouse gases (especially N ₂ O) generated, it is possible to quickly and easily grasp the optimum composition ratio of the n-butyl thiophosphoric triamide and the compound fertilizer, The effect of reducing the amount of compound fertilizer was confirmed through crop cultivation experiment using composition. Furthermore, by optimizing the use of fertilizer nutrients through the linkage between the optimal ratio of compound fertilizer and reducing the use of compound fertilizer, the use of compound fertilizer can be reduced without lowering crop growth and yield, We have developed a compound fertilizer for fertilizer application, which can be improved, and a method for fertilizing using it.

Korean Patent Publication No. 10-2015-0095778

The present invention can quickly and easily determine the composition ratio of the compound fertilizer and the urease inhibitor through the measurement of the greenhouse gas (especially N ₂ O) production amount of the cultivated crop, and determine the nitrogen (N), phosphorus ) And potassium (K) as basic ingredients, and 1 part by weight of urea decomposition inhibitor, the use of compound fertilizer to reduce the amount of compound fertilizer, and environmental pollution and greenhouse gas generation by compound fertilizer The present invention provides a compound fertilizer for reducing fertilizer application amount and a fertilizing method using the same.

The above object of the present invention is achieved by a composite fertilizer containing a nitrogen (N), phosphorus (P) and potassium (K) as main components and a urea decomposition inhibitor, wherein the composition ratio of the compound fertilizer and the urea decomposition inhibitor Wherein the greenhouse gas is N ₂ O, the complex fertilizer is 500 parts by weight, and the urea decomposition inhibitor is 1 part by weight.

The above object of the present invention is also achieved by a composite fertilizer comprising a nitrogen (N), phosphorus (P) and potassium (K) as main components and a urea decomposition inhibitor, Wherein the fertilizer is determined by measuring the amount of greenhouse gases generated by the crop.

Since the composition ratio of the compound fertilizer and the urea decomposition inhibitor can be determined quickly and quickly through the measurement of the amount of greenhouse gas (especially N ₂ O) generated, the time can be shortened, efficient, and economical. That is, it is possible to determine the proper amount of the urea decomposition inhibitor only through the long cultivation experiment, which is a problem of the prior art, thereby solving the inefficient and inefficient economy. The present invention can quickly grasp the optimum ratio of the n-butyl thiophosphoric triamide and the compound fertilizer by a simple method of measuring the amount of greenhouse gas (particularly N ₂ O) generated, The effect of reducing the amount of compound fertilizer is shown by the composition. In addition, the present invention maximizes the use of fertilizer nutrients by maximizing the use of fertilizer nutrients through the linkage between the optimal ratio of the compound fertilizer and the reduction of the use of the compound fertilizer, thereby reducing the amount of compound fertilizer used, It is possible to improve the problem of the above.

The present invention relates to a compound fertilizer for reducing the fertilizer application amount which does not affect the growth, quantity and quality of the crop even if the amount of the compound fertilizer is reduced, and a method for fertilizing the same using the compound fertilizer. Nitrogen, one of the major components of fertilizer, has a global warming effect 310 times higher than that of carbon dioxide (N ₂ O) among the six gases (CO ₂ , CH ₄ , N ₂ O, HFC, PFC, SF ₆ ) , The amount of greenhouse gases such as nitrous oxide (N ₂ O) is reduced as the use of compound fertilizer is reduced.

Hereinafter, the present invention will be described in detail. The detailed description of known functions and configurations that may obscure the subject matter of the present invention will be omitted.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. Means that a feature, number, step, operation, component, or combination of features described in the specification is intended to designate the presence of stated features, integers, steps, operations, components Elements or combinations thereof, as a matter of course. The scope of the present invention is not limited by the following examples.

≪ Test Example 1 > Basic test for reducing greenhouse gases of n-butyl thiophosphoric triamide (indoor test, 2015, Gyeonggi-do Agricultural Research &

The following tests were conducted to determine the effect of n-butyl thiophosphoric triamide (NBPT) on greenhouse gas N ₂ O evolution. Untreated urea, (hereinafter referred to as DCD.) Urease inhibitor NBPT is, based on the weight of 0.2% of the treated urea, a nitrification inhibitor Dicyandiamide weight is the N ₂ O emission by using the urea treated 0.2% by weight, based on the weight of the Respectively.

Treatment N ₂ O emission (ppb, day) Remarks After 1 day 3 days later After 8 days After 11 days After 18 days Unprocessed element 1,351 5,713 14,784 13,327 9,558 3 Repeat averages Element + NBPT 0.2 wt% 2,096 1,479 4,047 6,458 6,340 Element + DCD 0.2 wt% 1,505 3,857 10,881 10,422 8,128

As shown in Table 1, the test results showed that the N ₂ O emissions were lowest during the period from 3 to 18 days after the addition of 0.2 wt% of NBPT to the Urea fertilizer. Therefore, it was confirmed that the urea decomposition inhibitor (NBPT) has a greenhouse gas reduction effect.

<Test Example 2> Comparative test of reduction effect of greenhouse gas (especially N ₂ O) by content of urea decomposition inhibitor (NBPT) contained in compound fertilizer (Gyeonggi Provincial Agricultural Technology Institute, 2015)

The amount of N ₂ O generated in the treated group was compared with that in the control group (NBPT) treated with the compound fertilizer (NBPT) and the NBPT (control group) contained in the compound fertilizer. NBPT is the most effective method to reduce the amount of N ₂ O generated, and it reduces the amount of compound fertilizer to reduce the amount of fertilizer used. .

Treatment The amount of N ₂ O generated (g / ha, 30 days) N ₂ O occurrence index (%) Remarks Wagner Pot Nogi Wagner Pot Nogi Control (no treatment) 165 252 100 100 3 iterations
medium
(Compound fertilizer
Fertilization
Reference amount: 50kg / 10a) Compound fertilizer + NBPT 0.05 wt% 160 240 97 95 Compound fertilizer + NBPT 0.1 wt% 154 235 93 93 Compound fertilizer + NBPT 0.2 wt% 141 225 85 89 Compound fertilizer + NBPT 0.3 wt% 138 221 84 88 Compound fertilizer + NBPT 0.4 wt% 136 220 82 87 Compound fertilizer + NBPT 0.5 wt% 135 218 82 87

As shown in Table 2, when the NBPT weight was increased from 0.1 wt% to 0.2 wt%, the N ₂ O generation index decreased by 8% in the Wagner pot cultivation and decreased by 4% in the non-cultivated cultivation. When the NBPT weight is increased from 0.2 wt% to 0.3 wt%, the N ₂ O generation index is reduced by 1% in Wagner pot cultivation and by 1% in non-cultivation, and the decrease width is reduced. From these test results, it can be seen that the treatment of 0.2% by weight of compound fertilizer plus NBPT has the best efficiency. If the weight of NBPT exceeds 0.2 wt% based on the weight of the composite fertilizer, there is a high possibility that difficulty arises in the process of manufacturing the compound fertilizer and the economical efficiency is lowered due to the expensive NBPT. Therefore, the compound fertilizer for reducing fertilizer application amount is preferably composed of 500 parts by weight of compound fertilizer containing nitrogen (N), phosphorus (P) and potassium (K) as main components and 1 part by weight of urea decomposition inhibitor.

Based on the above results, the cultivation test on the pepper (Examples 1 and 2), Chinese cabbage (Examples 3 and 4), lettuce (Example 5), and cucumber (Example 6) . The composite fertilizer containing NBPT (0.2 wt.%) Used in the cultivation test had a composition of 12% by weight of N, 6% by weight of P ₂ O _{5 and} 6% by weight of K ₂ O. N ratio is 46% by weight in the element ratio, 17% by weight of P ₂ O ₅ and 60% by weight of K ₂ O in the aspect ratio of the standard time of acetone. The standard bhikkhu is Bulk Blending, which is a mixture of urea, fertilizer, and potassium chloride fertilizer according to the standard application standard of the RDA or the National Academy of Agricultural Science. A movie hole means that the fertilizer is not fertilized. The NBPT-containing compound fertilizer standard is applied to the total compound fertilizer (containing 0.2% by weight of NBPT) applied so as to have the N (nitrogen) input equal to the N (nitrogen) mass in the standard application standard of the RDA or NIA it means. 0.5 times the amount of NBPT compound fertilizer means half of the amount of compound fertilizer containing NBPT, so only half of the total compound fertilizer (containing 0.2 wt% of NBPT) is fertilized in this case.

Table 3 summarizes the amount of cultivated test fertilizer used for pepper (Examples 1 and 2), Chinese cabbage (Examples 3 and 4), lettuce (Example 5) and cucumber (Example 6) year). All cultivation tests were conducted by rotary application (whole layer fertilization) with a pre-soil fertilization.

Example (name of crop, testing institute) Treatment Base (kg / 10a) NP ₂ O ₅ -K ₂ O
Input (kg / 10a) Remarks Example 1
(pepper,
(Wind) Standard time Elements 22.4,
However,
Potassium chloride 15.2 10.3-11.2-9.1 Rural Development Administration
Red pepper (Nogi)
Baseline fertilization standard NPK: 10.3-11.2-9.1
(kg / 10a) Movie globe - Containing NBPT
Compound fertilizer 0.5 times 43.0 5.2-2.6-2.6 Containing NBPT
Compound fertilizer standard 86.0 10.3-5.2-5.2 Example 2
(pepper,
Gyeonggi-do
Agricultural Technology Institute) Standard time Element 26.6,
However,
Potassium chloride 14.9 12.2-11.2-8.9 National Academy of Agricultural Sciences
Red pepper (Nogi)
Basal fertilizer standard NPK: 12.2-11.2-8.9
(kg / 10a) Movie globe - - Containing NBPT
Compound fertilizer 0.5 times 50.9 6.1-3.1-3.1 Containing NBPT
Compound fertilizer standard 101.7 12.2-6.1-6.1 Example 3
(cabbage,
(Wind) Standard time Element 24.0,
However,
Potassium chloride 18.4 11.0-7.8-11.0 Rural Development Administration
Chinese cabbage
Basal fertilization standard NPK: 11.0-7.8-11.0
(kg / 10a) Movie globe - - Containing NBPT
Compound fertilizer 0.5 times 46.0 5.5-2.8-2.8 Containing NBPT
Compound fertilizer standard 92.0 11.0-5.5-5.5 Example 4
(cabbage,
Gyeonggi-do
Agricultural Technology Institute) Standard time Element 24.0,
However,
Potassium chloride 18.4 11.0-7.8-11.0 National Academy of Agricultural Sciences
Chinese cabbage
Basal fertilization standard NPK: 11.0-7.8-11.0
(kg / 10a) Movie globe - - Containing NBPT
Compound fertilizer 0.5 times 46.0 5.5-2.8-2.8 Containing NBPT
Compound fertilizer standard 92.0 11.0-5.5-5.5 Example 5
(Lettuce,
(Wind) Standard time Elements 7.7,
However,
Potassium chloride 3.0 3.5-3.0-1.8 Rural Development Administration
Lettuce (facility)
Basal fertilization standard NPK: 3.5-3.0-1.8
(kg / 10a) Movie globe - - Containing NBPT
Compound fertilizer 0.5 times 14.7 1.8-0.9-0.9 Containing NBPT
Compound fertilizer standard 29.3 3.5-1.8-1.8 Example 6
(cucumber,
(Wind) Standard time Element 20.0,
However,
Potassium chloride 13.5 9.2-10.3-8.1 Rural Development Administration
Cucumber (facility)
Baseline fertilization standard NPK: 9.2-10.3-8.1
(kg / 10a) Movie globe - - Containing NBPT
Compound fertilizer 0.5 times 38.5 4.6-2.3-2.3 Containing NBPT
Compound fertilizer standard 77.0 9.2-4.6-4.6

Table 4 shows the cultivation test results of the pepper of Example 1 cultivated in accordance with the fertilizer usage shown in Table 3.

Example 1 (pepper, 2015) Treatment Fruit per week
(recast) Per week
(g / week) Green pepper Dry pepper weight N ₂ O generation
(g / ha, 50 days) (kg / 10a) Indices(%) (kg / 10a) Indices(%) Standard time 18.1 473.4 945 100 172 100 625 (100%) Movie globe 10.2 253.1 485 51 92 53 165 (26%) Containing NBPT
Compound fertilizer 0.5 times 17.8 473.5 935 99 165 96 348 (56%) Containing NBPT
Compound fertilizer standard 19.3 513.7 991 105 195 113 525 (84%)

According to Table 4, the compound fertilizer containing 0.2 wt% of NBPT by weight is fertilized by only half of the standard amount, and the fruit per 100 trees per plant is 98% There was no difference in the number or weight of the two. The fresh weight of the pepper was 99% and the weight of the dried pepper was 96%, which reduced the fertilizer application rate by 50% without affecting the growth, yield and quality of the pepper. On the other hand, when fertilizer containing 0.2 wt% of NBPT was applied at a standard amount, the fruit weight, weight per unit weight, red pepper weight and dry red pepper weight were increased compared to the standard time acetone ratio, Respectively. Reduced further by fertilizing only half of the fertilizer reference amount containing NBPT of 0.2% by weight, based on the weight of the standard time acetabulum (Danielle), the N ₂ O emissions (g / ha, 50 days) to prepare 277 (g / ha, 50 days) could be, it could reduce N ₂ O emissions (g / ha, 50 days) to 177 (g / ha, 50 days) in preparation of compound fertilizer reference amount containing 0.2 wt.%, based on the weight of the NBPT.

Table 5 shows the results of the cultivation test of the red pepper of Example 2 cultivated in accordance with the amount of fertilizer used in Table 3.

Example 2 (pepper, 2015 Gyeonggi-do Agricultural Research and Extension Services) Treatment Plant building Nitrogen absorption utilization rate Dry pepper weight N ₂ O generation
(g / ha, 125 days) In building
(kg / 10a) Indices(%) Utilization (%) Indices(%) weight
(kg / 10a) Indices(%) Standard time 762 100 21 100 310 100 590 (100%) Movie globe 567 74 0 0 260 84 211 (36%) Containing NBPT
Compound fertilizer 0.5 times 759 100 32 152 308 99 306 (52%) Containing NBPT
Compound fertilizer standard 716 94 17 81 277 89 476 (81%)

[Utilization rate of nitrogen absorption in the plant building was 140 days after the plant was established]

According to Table 5, the compound fertilizer containing 0.2% by weight of NBPT in weight ratio is 100% in the plant building and 152% in the nitrogen absorption utilization rate compared to the standard time acetone And it can be seen that the introduced nitrogen is used efficiently. The dry weight of the red pepper is close to 99%, which reduces the fertilizer application rate by 50% without affecting the growth, yield and quality of the red pepper. On the other hand, when fertilizer containing 0.2 wt% NBPT is applied by the standard amount, the amount of NBPT compound fertilizer is decreased by 6% compared with 0.5 times of NBPT compound fertilizer. The results are shown. Furthermore, by fertilization, only half of the fertilizer reference amount containing NBPT of 0.2% by weight, based on the weight of the non-time (Danielle) N ₂ O emissions (g / ha, 125 days) the reduction 284 (g / ha, 125 days) in preparation was able to, the N ₂ O emissions (g / ha, 125 days) in preparation of compound fertilizer reference amount containing 0.2 wt.%, based on the weight of the NBPT was reduced 170 (g / ha, 125 days).

Table 6 shows the cultivation test results of the Example 3 Chinese cabbage cultivated according to the fertilizer usage amount shown in Table 3.

Example 3 (Chinese cabbage, 2015, Pungsung Co.) Treatment Leaf length (cm) Leaf width (cm) chlorophyll content weight N ₂ O generation
(g / ha, 30 days) (mg / 100 cm ² ) Indices(%) (kg / 10a) Indices(%) Standard time 34.2 36.6 3.04 100 2,548 100 511 (100%) Movie globe 25.8 19.7 2.75 90 1,564 61 155 (30%) Containing NBPT
Compound fertilizer 0.5 times 35.8 26.8 3.03 100 2,561 101 298 (58%) Containing NBPT
Compound fertilizer standard 38.2 27.8 3.13 103 2,783 109 445 (87%)

According to Table 6, the compound fertilizer containing 0.2% by weight of NBPT in terms of the weight of cabbage leaves (leaf length), leaf width (cabbage leaf width), chlorophyll (chlorophyll) There was almost no difference in content. The cabbage weight index reached 101%, and the fertilizer application rate could be reduced by 50% without affecting the growth, yield and quality of Chinese cabbage. On the contrary, chlorophyll (chlorophyll) contents and Chinese cabbage weight were increased compared with the standard time acetonitrile (NBPT) mixed fertilizer containing 0.2 wt% NBPT, . Furthermore, the fertilizer containing NBPT of 0.2% by weight was fertilized by only half of the standard amount, thereby reducing 213 (g / ha, 30 days) of N ₂ O generation (g / ha, 30 days) (G / ha, 30 days) of 147 (g / ha, 30 days) of N ₂ O was able to be reduced with respect to the compound fertilizer standard containing 0.2 wt% NBPT.

Table 7 shows the results of the cultivation test of Example 4 Chinese cabbage cultivated according to the amount of fertilizer used in Table 3.

Example 4 (Chinese cabbage, 2015 Gyeonggi Provincial Agricultural Technology Institute) Treatment Plant building Nitrogen absorption utilization rate Cabbage weight N ₂ O generation
(g / ha, 57 days) In building
(kg / 10a) Indices(%) Utilization (%) Indices(%) weight
(kg / 10a) Indices(%) Standard time 953 100 41 100 7,668 100 1,146 (100%) Movie globe 688 72 0 0 6,634 87 143 (12%) Containing NBPT
Compound fertilizer 0.5 times 882 93 39 95 7,471 97 393 (34%) Containing NBPT
Compound fertilizer standard 989 104 45 110 8,008 104 644 (56%)

[Utilization rate of nitrogen absorption in the plant building was 60 days after the plant was established]

According to Table 7, the compound fertilizer containing 0.2% by weight of NBPT in weight ratio is 93% in the plant building and 95% in the nitrogen absorption utilization rate, And it can be seen that the introduced nitrogen is used efficiently. The weight of the Chinese cabbage is close to 97%, which reduces the fertilizer application rate by 50% without affecting the growth, yield and quality of Chinese cabbage. On the other hand, when fertilizer containing 0.2 wt% of NBPT was applied by the standard amount, there was no significant difference compared with 0.5 times of NBPT compound fertilizer. Furthermore, the fertilizer containing 0.2% by weight of NBPT can be reduced by 753 (g / ha, 57 days) to N ₂ O (g / ha, 57 days) It was, was able to reduce N ₂ O emissions (g / ha, 57 days) to 251 (g / ha, 57 days) in preparation of compound fertilizer reference amount containing 0.2 wt.%, based on the weight of the NBPT.

Table 8 shows the results of cultivation test of the lettuce of Example 5 cultivated according to the amount of fertilizer used in Table 3. [

Example 5 (Lettuce, Fumono Co., Ltd. in 2015) Treatment Leaf length (cm) Leaf width (cm) chlorophyll content weight N ₂ O generation
(g / ha, 25 days) (mg / 100 cm ² ) Indices(%) (kg / 100 weeks) Indices(%) Standard time 15.4 10.8 2.42 100 2.44 100 321 (100%) Movie globe 8.5 5.8 1.98 82 1.15 47 115 (36%) Containing NBPT
Compound fertilizer 0.5 times 15.3 9.2 2.38 98 2.41 99 185 (58%) Containing NBPT
Compound fertilizer standard 16.2 12.1 2.58 107 2.71 111 285 (89%)

According to Table 8, the compound fertilizer containing 0.2% by weight of NBPT in terms of the weight of the standard amount, compared with the standard time of the acetabulum (standard ratio), the leaf length (lettuce leaf length), leaf width (lettuce leaf width), chlorophyll There was almost no difference in content. The weight of the lettuce reached 99%, and the fertilizer application rate could be reduced by 50% without affecting the growth, yield and quality of lettuce. On the other hand, when fertilizer containing 0.2 wt% of NBPT was applied by the standard amount, the amount of foliage, leaf width, chlorophyll (chlorophyll) content and lettuce weight were increased compared to standard time, but the cost of input material was high. Furthermore, the amount of N ₂ O generated (g / ha, 25 days) was reduced by 136 (g / ha, 25 days) compared with the standard time of acetone by the application of only half of the standard amount of compound fertilizer containing 0.2 wt% could be, it could reduce N ₂ O emissions (g / ha, 25 days) to 100 (g / ha, 25 days) in preparation of compound fertilizer reference amount containing 0.2 wt.%, based on the weight of the NBPT.

Table 9 shows the cultivation test results of Example 6 cucumber grown according to the fertilizer usage shown in Table 3. [

Example 6 (cucumber, Pungsung Co., Ltd. in 2015) Treatment Exaggeration per week (cm) Number of fruit per week (pcs / week) Per week weight N ₂ O generation
(g / ha, 50 days) (kg / week) Indices(%) (kg / 10a) Indices(%) Standard time 25.9 4.53 0.61 100 1,587 100 455 (100%) Movie globe 18.3 4.12 0.32 52 752 47 185 (41%) Containing NBPT
Compound fertilizer 0.5 times 25.4 4.51 0.58 95 1,555 98 315 (69%) Containing NBPT
Compound fertilizer standard 27.1 4.73 0.65 107 1,702 107 412 (91%)

According to Table 9, the compound fertilizer containing 0.2 wt% of NBPT in terms of weight is applied to only half of the reference amount, but compared with the standard time, the cucumber length, the number of fruit trees per cucumber, Weight). The weight of cucumber reached 98%, which allowed the fertilizer application rate to be reduced by 50% without affecting the growth, yield and quality of the cucumber. On the other hand, when compound fertilizer containing 0.2 wt% of NBPT is applied by the standard amount, the number of exudates (cucumber length) per week, number of fruit trees per cucumber, weight per cucumber (weight of cucumber), weight , But there was no significant difference compared with 0.5 times of NBPT compound fertilizer. Furthermore, the amount of N ₂ O generated (g / ha, 50 days) was reduced by 140 (g / ha, 50 days) compared to the standard time of acetone by the application of only half of the standard amount of compound fertilizer containing 0.2 wt% could be, it could reduce N ₂ O emissions (g / ha, 50 days) to 97 (g / ha, 50 days) in preparation of compound fertilizer reference amount containing 0.2 wt.%, based on the weight of the NBPT.

Based on the above results, a cultivation test was further carried out on the red pepper (Example 7) and Chinese cabbage (Example 8) in 2016. [ The composite fertilizer containing NBPT (0.2 wt.% By weight) used in the cultivation test had a composition of 12 wt% of N, 6 wt% of P ₂ O _{5 and} 6 wt% of K ₂ O. N ratio is 46% by weight in the element ratio, 17% by weight of P ₂ O ₅ and 60% by weight of K ₂ O in the aspect ratio of the standard time of acetone. The standard bhikkhu is Bulk Blending, which is a blend of urea, fertilizer, and potassium chloride fertilizer according to the National Academy of Agricultural Science standard application standard. A movie hole means that the fertilizer is not fertilized. The NBPT-containing compound fertilizer standard refers to the total fertilizer application rate (containing 0.2% by weight based on NBPT weight) to be applied so as to have an N (nitrogen) input amount equal to the N (nitrogen) component weight at the National Institute of Agricultural Science and Technology . 0.5 times the amount of NBPT compound fertilizer means half of the amount of compound fertilizer containing NBPT, so only half of the total compound fertilizer (containing 0.2 wt% of NBPT) is fertilized in this case.

Table 10 summarizes the usage of cultivated test fertilizer for pepper (Example 7) and Chinese cabbage (Example 8) (2016). All cultivation tests were conducted by rotary application (whole layer fertilization) with a pre-soil fertilization.

Example (name of crop, testing institute) Treatment Base (kg / 10a) NP ₂ O ₅ -K ₂ O
Input (kg / 10a) Remarks Example 7
(pepper,
Gyeonggi-do
Agricultural Technology Institute) Standard time Element 26.6,
However,
Potassium chloride 14.9 12.2-11.2-8.9 National Academy of Agricultural Sciences
Red pepper (Nogi)
Basal fertilizer standard NPK: 12.2-11.2-8.9
(kg / 10a) Movie globe - - Containing NBPT
Compound fertilizer 0.5 times 50.9 6.1-3.1-3.1 Containing NBPT
Compound fertilizer standard 101.7 12.2-6.1-6.1 Example 8
(cabbage,
Gyeonggi-do
Agricultural Technology Institute) Standard time Element 24.0,
However,
Potassium chloride 18.4 11.0-7.8-11.0 National Academy of Agricultural Sciences
Chinese cabbage
Basal fertilization standard NPK: 11.0-7.8-11.0
(kg / 10a) Movie globe - Containing NBPT
Compound fertilizer 0.5 times 46 5.5-2.8-2.8 Containing NBPT
Compound fertilizer standard 92 11.0-5.5-5.5

Table 11 shows the cultivation test results of the pepper of Example 7 cultivated in accordance with the amount of fertilizer used in Table 10.

Example 7 (pepper, 2016 Gyeonggi-do Agricultural Research and Extension Services) Treatment Plant building Nitrogen absorption utilization rate Dry pepper weight N ₂ O generation
(g / ha, 125 days) In building
(kg / 10a) Indices(%) Utilization (%) Indices(%) weight
(kg / 10a) Indices(%) Standard time 734 100 32 100 402 100 977 (100%) Movie globe 414 56 0 0 250 62 219 (22%) Containing NBPT
Compound fertilizer 0.5 times 630 86 28 88 396 99 513 (53%) Containing NBPT
Compound fertilizer standard 838 114 44 138 446 111 761 (78%)

[Utilization rate of nitrogen absorption in the plant building was 140 days after the plant was established]

According to Table 11, the compound fertilizer containing 0.2% by weight of NBPT by weight is applied to only half of the standard amount, and 86% of the plant building and 88% of the nitrogen absorbing utilization rate are compared with the acetabulum (standard ratio) And it can be seen that the introduced nitrogen is used efficiently. The weight of dried red pepper reaches 99%, which reduces the fertilizer application rate by 50% without affecting the growth, yield and quality of red pepper. On the other hand, when the compound fertilizer containing 0.2 wt% of NBPT is applied by the standard amount, the input material cost is higher than that of 0.5 times of the NBPT compound fertilizer. Furthermore, by fertilization, only half of the fertilizer reference amount containing NBPT of 0.2% by weight, based on the weight of the non-time (Danielle) N ₂ O emissions (g / ha, 125 days) the reduction 464 (g / ha, 125 days) in preparation could be, could reduce the fertilizer N ₂ O emissions (g / ha, 125 days) compared to reference amount containing 0.2 wt.% NBPT, based on the weight of 248 (g / ha, 125 days).

Table 12 shows the cultivation test results of Example 8 Chinese cabbage grown according to the amount of fertilizer used in Table 10.

Example 8 (Chinese cabbage, 2016 Gyeonggi-do Agricultural Research and Extension Services) Treatment Plant building Nitrogen absorption utilization rate Cabbage weight N ₂ O generation
(g / ha, 57 days) In building
(kg / 10a) Indices(%) Utilization (%) Indices(%) weight
(kg / 10a) Indices(%) Standard time 591 100 33 100 8,183 100 384 (100%) Movie globe 369 62 0 0 3,425 42 52 (12%) Containing NBPT
Compound fertilizer 0.5 times 535 91 33 100 7,367 90 94 (34%) Containing NBPT
Compound fertilizer standard 547 93 32 97 8,700 106 316 (56%)

[Utilization rate of nitrogen absorption in the plant building was 60 days after the plant was established]

According to Table 12, the compound fertilizer containing 0.2 wt% of NBPT by weight is 91% in the plant building and 100% in the nitrogen absorption utilization rate compared with the standard non-fertilizer, And it can be seen that the introduced nitrogen is used efficiently. The weight of Chinese cabbage is close to 90%, which reduces the fertilizer application rate by 50% without affecting the growth, yield and quality of Chinese cabbage. On the other hand, the fertilizer containing 0.2 wt% of NBPT was fertilized by the standard amount, but the cost of the input material was higher than that of 0.5 times of the NBPT compound fertilizer. Furthermore, the amount of N ₂ O generated (g / ha, 57 days) was reduced by 290 (g / ha, 57 days) compared to the standard time of acetone by the application of only half of the standard amount of compound fertilizer containing 0.2 wt% could be, it could reduce N ₂ O emissions (g / ha, 57 days) to 222 (g / ha, 57 days) in preparation of compound fertilizer reference amount containing 0.2 wt.%, based on the weight of the NBPT.

As described above, the composition ratio of the compound fertilizer and the urea decomposition agent can be quickly determined through the simple and efficient method of measuring the amount of greenhouse gas (especially N ₂ O) generated according to the present invention, and the compound fertilizer having the determined composition ratio can be used As a result of cultivating various kinds of crops, only half of the standard amount of conventional compound fertilizer was applied and the cultivated crops were compared with the crops of standard time acetabulum (standard ratio) or compound fertilizer standard, Similar results were obtained. That is, according to the present invention, the compound fertilizer for reducing fertilizer application amount and the fertilizing method using the same, it was found that even if the fertilizer application amount is reduced by 50%, there is no difference in the growth, yield or quality of crops. Etc. Further, according to the inventors fertilizer method of fertilizing by application rate reduce fertilizer and use it for, nitrous oxide (N ₂ O) in accordance with the fertilizer to reduce fertilizer usage, environmentally friendly and economic efficiency is excellent, and it is possible to reduce 50% This is equivalent to the green growth technology because it has the effect of reducing greenhouse gas emissions.

Claims (11)

The method of claim 1, wherein the composition ratio of the compound fertilizer to the urea decomposition inhibitor is determined by measuring a greenhouse gas production amount of the cultivated crops, wherein the composite fertilizer comprises nitrogen (N), phosphorus (P) Wherein the greenhouse gas is N ₂ O, the complex fertilizer is 500 parts by weight, and the urea decomposition inhibitor is 1 part by weight.
The method according to claim 1,
Wherein the urea decomposition inhibitor is n-butyl thiophosphoric triamide.
3. The method of claim 2,
Wherein the weight ratio of nitrogen (N), phosphorus (P) and potassium (K) is 2: 1: 1.
The method of claim 3,
Wherein the nitrogen (N), phosphorus (P) and potassium (K) are contained in the compound fertilizer in an amount of 12 wt%, 6 wt% and 6 wt%, respectively.
The method of claim 1, wherein the composition ratio of the compound fertilizer to the urea decomposition inhibitor is determined by measuring a greenhouse gas production amount of the cultivated crops, wherein the composite fertilizer comprises nitrogen (N), phosphorus (P) Wherein the fertilizer is fertilized using a compound fertilizer for reducing fertilizer application amount.
6. The method of claim 5,
The greenhouse gas fertilization method using the fertilizer for fertilizer application rate reduction which is characterized in that the N ₂ O.
The method according to claim 6,
Wherein the compound fertilizer is 500 parts by weight and the urea decomposition inhibitor is 1 part by weight.
8. The method of claim 7,
Wherein the urea decomposition inhibitor is n-butyl thiophosphoric triamide.
9. The method of claim 8,
Wherein the weight ratio of nitrogen (N), phosphorus (P) and potassium (K) is 2: 1: 1.
10. The method of claim 9,
Wherein the nitrogen (N), phosphorus (P) and potassium (K) are contained in the compound fertilizer in an amount of 12 wt%, 6 wt% and 6 wt%, respectively How to fertilize.
11. The method according to any one of claims 5 to 10,
Wherein the compound fertilizer for reducing the fertilizer application amount is used for the rooting of a crop of any one of red pepper, Chinese cabbage, lettuce or cucumber.