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Special-purpose fertilizer for corn and application thereof

A corn-specific fertilizer and fertilizer technology, applied in the application, fertilization device, fertilizer mixture and other directions, can solve the problems of reproductive growth frustration, white corn seedlings, and impact on yield, etc., and achieve the effects of improving retrograde resistance, increasing yield, and increasing investment.

Inactive Publication Date: 2008-07-02
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the current corn production process in the Lower Liaohe Plain, many plots are deficient in zinc, which is an essential trace element for corn. Zinc deficiency will lead to white seedlings of corn, frustrated reproductive growth, short plants, bald tips and lack of kernels, seriously affecting yield

Method used

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  • Special-purpose fertilizer for corn and application thereof
  • Special-purpose fertilizer for corn and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Based on the effective content of nitrogen, phosphorus and potassium, the fertilizer weight composition is: N:P 2 o 5 : K 2 O: Zn=1: 0.7: 0.4: 0.08, hydrogen kun (HQ) consumption is 2.0% of N fertilizer weight and dicyandiamide (DCD) consumption is 3.0% of N fertilizer weight, unit area consumption N: 150kg hm -2 , P 2 o 5 : 105kg hm -2 , K 2 O: 60kg hm -2 , Zn is 12kg hm -2 . That is, N is 150kg hm -2 , P is 46kg hm -2 , K is 49.8kg hm -2 , Zn is 12kg hm -2. It should be noted that the above amounts are calculated by elements, and corresponding conversions are required in specific applications. In addition, according to the difference in the soil nutrient background of the cultivated land, the amount of fertilizer can fluctuate within the range of ±15%.

[0031] Among them: the fertilizer selected for N is urea, P 2 o 5 The fertilizer selected is diammonium, K 2 The fertilizer used by O is potassium sulfate, and Zn is zinc sulfate.

[0032] Applicatio...

Embodiment 2

[0034] The difference from Example 1 is that the fertilizer composition is shown in the following table:

[0035] Fertilizer ratio, N:P 2 o 5 : K 2 O:Zn=1:0.31:0.33:0.08

[0036] Table 1 Fertilizer consumption per hectare (kg / hm 2 )

[0037] Preface

[0038] Note: The source of Zn can be the tailings slag of Kazuo Molybdenum Mine in Liaoxi, Liaoning, which can save costs. The above units are K g.

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Abstract

The invention relates to corn fertilization, in particular to a corn special fertilizer and the application. The weight composition of the fertilizer is calculated according to the effective contents of nitrogen, phosphorus and potassium of N: P: K: Zn equals to 1:0.25 to 0.35:0.37 to 0.47: 0.08 to 0.1; the contents of hydroquinone and dicyandiamide account for 2.0 to 3.0 percent of N fertilizer.

Description

technical field [0001] The invention relates to corn fertilization, in particular to a special fertilizer for corn and its application. Background technique [0002] Corn is the main agricultural crop in the Lower Liaohe Plain and even the Northeast Plain. The N element needed during the growth period mainly depends on fertilization and soil mineralization. According to the investigation of Bian Xiuzhi (2006, 14(5): 134-137) The general trend of the relationship between yield and fertilizer is that the total amount of fertilizer required for corn increases with the increase of yield. However, the amount of fertilizer needed to form 100 kilograms of grain yield decreases as the yield increases. This is mainly due to the replacement of fine varieties and the gradual scientific and rational cultivation techniques. Other factors, such as high density and too much fertilizer, can easily cause plant lodging or increase of empty stalk rate, lower yield, and greatly increase the N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
Inventor 宇万太马强张璐周桦
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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