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Local double regulation method for application of starter fertilizer and top dressing for maize

A fertilization method and local technology, applied in fertilization methods, fertilization devices, fertilizer mixtures and other directions, can solve the problems of ignoring start-up fertilizer, low fertilizer utilization rate, and ignoring top-dressing fertilizer, etc., so as to improve nutrient agronomic efficiency and partial productivity, The effect of fertilizer cost saving, fertilizer agronomic efficiency improvement

Inactive Publication Date: 2012-07-25
CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems that only pay attention to base fertilizer (or start-up fertilizer) and ignore topdressing in production, or only pay attention to topdressing and ignore start-up fertilizer. Fertilization problems, and provide a corn start fertilizer and topdressing two local regulation fertilization method, using scientific nutrient formula and application method, to promote the growth of strong seedlings and corn in the middle and late stage, and realize the increase of corn yield

Method used

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  • Local double regulation method for application of starter fertilizer and top dressing for maize
  • Local double regulation method for application of starter fertilizer and top dressing for maize
  • Local double regulation method for application of starter fertilizer and top dressing for maize

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Start fertilizer application method

[0031] After the completion of corn site preparation and before sowing, take 200kg ha of ammonium sulfate containing 20% ​​N and free acid -1 ; Phosphorous P 2 o 5 Ordinary calcium superphosphate ≥18%, free acid ≤5.5% 444kg ha -1 Mix well and set aside.

[0032] Application method: When sowing, open a ditch to apply starter fertilizer at a place 5cm away from the side of the sowing row. The depth of the ditch is 5cm downward from the vertical distance of the seed, and manual application is adopted.

[0033](2) Top dressing method at jointing stage

[0034] At the jointing stage of corn, take 600kg ha of ammonium sulfate containing 20% ​​N and free acid -1 ; Phosphorous P 2 o 5 Ordinary calcium superphosphate ≥18%, free acid ≤5.5% 150kg ha -1 Mix well and set aside.

[0035] Application method: the horizontal distance from the plant row is 10-12cm×12-15cm, and the fertilizer bar is applied on the other side of the plant ro...

Embodiment 2

[0038] (1) Start fertilizer application method

[0039] After the finishing of corn, before sowing, take 175kg ha of ammonium sulfate containing 20% ​​N and free acid -1 ; Phosphorous P 2 o 5 Ordinary calcium superphosphate ≥18%, free acid ≤5.5% 389kg ha -1 Mix evenly and set aside.

[0040] Application method: when sowing, open a ditch to apply starter fertilizer at a place 5cm away from the side of the sowing row, and the ditch depth is 5cm downward from the vertical distance from the seed.

[0041] (2) Top dressing method at jointing stage

[0042] At the jointing stage of corn, take 650kg ha of ammonium sulfate containing 20% ​​N and free acid -1 ; Phosphorous P 2 o 5 Ordinary calcium superphosphate ≥18%, free acid ≤5.5% 100kg ha -1 Mix well.

[0043] Application method: the distance from the row of plants is 10cm×12cm, and the fertilizer is applied on the other side of the row of plants, which is relatively distributed with the starting fertilizer, that is, the hor...

Embodiment 3

[0046] In 2010 and 2011, field fertilizer efficiency tests were carried out at the China Agricultural University Experiment Station in Shangzhuang, Haidian District, Beijing, the China Agricultural University Experiment Station in Quzhou, Hebei, and the Lishu area in Jilin.

[0047] 1. Materials and methods:

[0048] 1.1 Test crops: corn

[0049] 1.2 Test method: field test, located in Shangzhuang Experimental Base, Haidian District, Beijing, China Agricultural University

[0050] 1.3 Experimental design:

[0051] Treatment 1: Regular Fertilization

[0052] Treatment 2: two local regulation and control fertilization techniques of start-up fertilizer and jointing stage topdressing provided by the present invention

[0053] 1.4 Test soil:

[0054] The test soil is sandy fluvo-aquic soil, which is a typical calcareous soil, and the soil bulk density of the 0-30cm soil layer is 1.44gcm -3 , pH is 8.1 (soil-water ratio 1:5), organic matter content is 8.4g kg -1 , the total ni...

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Abstract

The invention discloses a local double regulation method for application of starter fertilizer and top dressing for maize, which includes the steps: applying the starter fertilizer to one side of each seeding row by furrow application; and applying the top dressing to one side of each plant row by furrow application during maize jointing, namely the side opposite to the starter fertilizer; wherein each of the starter fertilizer and the top dressing is composed of nitrogen fertilizer and phosphate fertilizer. By combining double local regulation of the starter fertilizer and the top dressing according to growth characters of maize, and compared with traditional application of fertilizer by farmers, the method meets the requirement of maize on nutrients during key growth period, fertilizingefficiency is improved, and both production and income are increased. A scientific high-yield and high-efficiency fertilizing method for maize is provided, and is effective. Especially, with popularization of agricultural mechanization, higher practical application value is achieved by combining fertilizing technology with agricultural machinery. Meanwhile, the combination of agriculture and agricultural machinery leads the development of modernized agriculture and is popularized internationally. The method has broad application prospect on domestic maize production.

Description

technical field [0001] The invention relates to a two-time local regulation fertilization method of corn start-up fertilizer and topdressing fertilizer, which belongs to the technical field of corn fertilization. Background technique [0002] Corn is the third largest economic crop in my country and plays an important role in agricultural production. Carrying out scientific, production-increasing, and economical fertilization to increase grain production and farmers' income has become a concern of the whole society. Reasonable fertilization must be applied to meet the nutrient requirements of corn in different growth stages and to achieve high yield and high efficiency of corn. However, in my country's current corn production, farmers often fertilize based on past experience, especially blind application of seed fertilizers and "one shot" phenomena are common. For example, in some major corn producing areas, the amount of basal fertilizer is large or "one shot", resulting ...

Claims

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Application Information

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IPC IPC(8): A01C21/00C05G1/00
Inventor 申建波马庆华张福锁唐宏亮荆晶莹李洪波
Owner CHINA AGRI UNIV
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