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Special fertilizer for northeast corn and preparation method thereof

A special fertilizer technology for corn, applied in the direction of inorganic fertilizer, ammonium salt fertilizer, fertilizer mixture, etc., can solve the problems of unstable application effect, lower nitrogen utilization rate, burning seedlings, etc., and achieve high practical application value and nitrogen fertilizer utilization rate Improve the effect of broad market prospects

Active Publication Date: 2007-10-03
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the field investigation and scientific research work, it was found that the one-time fertilization of corn in Northeast China has the following problems: ① one-time large-scale application of high-nitrogen compound fertilizer (generally 500-600kg / hm 2 ), it is easy to cause too high nutrient concentration in the root zone at the seedling stage to inhibit the growth of seedlings, and even "burning seedlings"; There is a risk of nitrogen leaching below the root layer soil, reducing nitrogen use efficiency; ③All high-nitrogen quick-acting fertilizers are released in the early stage, and the nitrogen supply is often insufficient in the later stage, so it is prone to nitrogen deficiency and yellowing (customarily called "denitrification") ④ Improper ratio of nitrogen, phosphorus and potassium nutrients in various fertilizers currently sold in the market, resulting in low fertilizer utilization rate
However, a large number of existing research results show that the inhibitory effect of urease inhibitors or nitrification inhibitors is difficult to exceed 2 months, and the application effect is extremely unstable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, the preparation of special fertilizer for corn in Northeast China

[0029] 1. Acquisition of special fertilizer formula for corn in Northeast China

[0030] 1. Determination of the proportion of nitrogen, phosphorus and potassium fertilizers in the special fertilizer for corn in Northeast China

[0031] According to the relatively high supply capacity of nitrogen, phosphorus and potassium nutrients in the soil in Northeast China, the demand of corn for nitrogen, phosphorus and potassium nutrients and the results of a large number of field fertilizer experiments, the average target yield is 11,000kg / hm 2 Calculate and determine the amount of nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer to be 150-180kg / hm respectively 2 、90-110kg / hm 2 、60-75kg / hm 2 , thus, nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer (N:P 2 o 5 : K 2 O) The ratio of parts by weight is 24-26:14-16:8-11, preferably 25:15:10.

[0032] 2. Determi...

Embodiment 2

[0039] Example 2, Preparation of Special Fertilizer for Corn in Northeast China and Testing of Fertilizer Efficiency

[0040] 1. Preparation of special fertilizer for corn in Northeast China

[0041] Weigh raw materials with a moisture content of less than 8%: 140kg of coated controlled-release urea (N content: 42%, available from Capital Innovative Fertilizer Technology Co., Ltd. and Kingenta Group) with a release period of 50-70 days Tian's coated controlled-release urea (N content: 40%, purchased from the first innovative fertilizer technology company) 140kg, ordinary large grain urea (N content: 46%) 180kg, diammonium phosphate (N content: 18%, P 2 o 5 Content: 46%) 373kg and granular potassium chloride (K 2 O content: 60%) 167kg, material machinery is mixed, obtain the special fertilizer for corn in Northeast China, bagged by 50kg.

[0042] 2. Fertilizer efficiency test of special fertilizer for corn in Northeast China

[0043] The same field test as in Example 1 was ...

Embodiment 3

[0044] Example 3, Preparation of Special Fertilizer for Corn in Northeast China and Testing of Fertilizer Efficiency

[0045] 1. Preparation of special fertilizer for corn in Northeast China

[0046] Weigh raw materials with a moisture content of less than 8%: 134kg of coated controlled-release urea (N content: 42%, available from Capital Innovative Fertilizer Technology Co., Ltd. and Kingenta Group) with a release period of 50-70 days Tian's coated controlled-release urea (N content: 40%, can be purchased from the first innovative fertilizer technology Co., Ltd. %, P 2 o 5 Content: 44%) 358kg and granular potassium sulfate (K 2 O content: 54%) 167kg, material machinery is mixed, obtain the special fertilizer for corn in Northeast China, bagged by 50kg.

[0047] 2. Fertilizer efficiency test of special fertilizer for corn in Northeast China

[0048] The same field test as in Example 1 was used to detect the fertilizer efficiency of the special fertilizer for corn in North...

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Abstract

A fertilizer dedicated for the corn in northeast China contains N fertilizer (24-26 Wt portions), P fertilizer (14-16) and K fertilizer (8-11). Its advantages are balanced nutrients, high utilization rate and low cost. Its preparing process is also disclosed.

Description

technical field [0001] The invention relates to a fertilizer and a preparation method thereof, in particular to a special controlled-release mixed fertilizer suitable for one-time fertilization of corn in northeast my country and a preparation method thereof. Background technique [0002] Northeast China (including Jilin, Liaoning, Heilongjiang and eastern Inner Mongolia) is the most important spring corn producing area in my country. Corn in this area is generally sown at the end of April and harvested in September. The conventional fertilization method is one bottom (before sowing) and one chasing (big trumpet period). In recent years, on the one hand, due to the transfer of rural labor force, on the other hand, due to the fact that topdressing during the big bell mouth period will cause the plant height to be too high for mechanized operations, and it is very difficult to artificially fertilize under high temperature in summer, therefore, farmers generally use one-time f...

Claims

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Application Information

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IPC IPC(8): C05G1/00C05G3/08C05C9/00C05C3/00C05B7/00C05B1/00C05B1/04C05D1/00C05G3/90
CPCY02P60/21
Inventor 陈新平杨俊刚崔振岭张福锁曹一平
Owner CHINA AGRI UNIV
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