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Accurate depth layered application method of summer corn nitrogen phosphorus and potassium fertilizer

A technology of nitrogen, phosphorus and potassium for corn and an application method is applied in the fields of precise and deep layered application of potassium fertilizer, phosphorus and nitrogen to achieve the effects of promoting lowering, improving nutrient efficiency and improving corn yield.

Inactive Publication Date: 2017-04-26
INST OF AGRI RESOURCES & ENVIRONMENT HEBEI ACADEMY OF AGRI & FORESTRY SCI
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  • Claims
  • Application Information

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Problems solved by technology

There is no report on the relevant research on the suitable depth of potassium fertilizer application in summer maize

Method used

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  • Accurate depth layered application method of summer corn nitrogen phosphorus and potassium fertilizer
  • Accurate depth layered application method of summer corn nitrogen phosphorus and potassium fertilizer
  • Accurate depth layered application method of summer corn nitrogen phosphorus and potassium fertilizer

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1, summer corn nitrogen, phosphorus and potassium fertilizer precise depth layered application method

[0022] First, determine the total amount of nitrogen, phosphorus, and potassium fertilizers according to the soil fertility level, and the recommended amount is N 180 kg.hm -2 , P 2 o 5 120kg.hm -2 , K 2 O 150 kg.hm -2 The depth of the seed layer is set to 3.5cm, and then three fertilization layers are arranged successively under the seed layer, and the depths of the three fertilization layers are successively 8cm, 16cm, and 24cm; The weight ratio of the amount used in the fertilization layer is 40:60:0, the weight ratio of the amount of potassium fertilizer in the three fertilization layers from top to bottom is 20:40:40, and the amount of phosphorus fertilizer in the three fertilization layers from top to bottom by weight The ratio is 0:10:90.

Embodiment 2

[0023] Example 2, field operation method of summer corn nitrogen, phosphorus and potassium fertilizers in precise and deep layers

[0024] When working in the field, the layered and precise fertilization adopts the simultaneous seeding technology of seed and fertilizer. First, a 24cm deep trench is mechanically opened, and then the bottom layer of fertilizer is spread, covering the soil with 8cm, and then the middle layer of fertilizer is applied, covering the soil with 8cm, and then the upper layer of fertilizer is applied, covering the soil with 4- 5cm, then sow corn seeds, and finally cover with soil; form a corn sowing depth of 3-4cm, three layers of fertilization under planting, and the fertilizer is 8cm, 16cm, and 24cm away from the ground; specifically, special machinery can be used to realize simultaneous sowing of seed and fertilizer. The structure of the above-mentioned special machinery includes one set of seed boxes and three sets of fertilizer boxes. The three sets...

Embodiment 3

[0025] Example 3, field test of precise and deep layered application of nitrogen, phosphorus and potassium fertilizers for summer corn

[0026] 1. Materials and methods

[0027] The test was carried out at Baogaofeng Farm, Mazhuang Township, Xinji City, Hebei Province. The test area has a semi-humid continental climate in the monsoon warm temperate zone. The soil tested was light loamy fluvo-aquic soil, with organic matter content of 16.55g / kg, total nitrogen content of 0.98g / kg, alkaline hydrolyzed nitrogen of 76.29mg / kg, available phosphorus of 16.21mg / kg, and available potassium of 112mg / kg.

[0028] Three treatments were set up in the experiment: 1) control without fertilization (CK); 2) traditional root side fertilization, one-time application of nitrogen, phosphorus and potassium fertilizers (root side) with a ridge side of 8 cm and a depth of 5 cm; 3) layered fertilization, fertilization in three layers , the fertilization depth is 8cm, 16cm, 24cm from the surface, the...

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Abstract

The invention discloses an accurate depth layered application method of summer corn nitrogen phosphorus and potassium fertilizer. The method includes steps of firstly, determining fertilizing amount according to land capability level, and then orderly arranging three fertilizing layers beneath a seed layer, wherein the usage weight ratio of nitrogen fertilizer in three fertilizing layers from top to bottom is (10-40): (60-90): 0; the usage weight ratio of potash fertilizer in three fertilizing layers from top to bottom is (20-40): (20-40): (20-40); the usage weight ratio of phosphatic fertilizer in three fertilizing layers from top to bottom is 0: (0-10): (90-100). The planting method is excellent in field effect, and capable of improving the fertilizer nutrient efficiency, significantly promoting root system penetration and greatly improving the corn output.

Description

technical field [0001] The invention relates to the technical field of agricultural production, in particular to a precise and deep layered application method of nitrogen, phosphorus and potassium fertilizers suitable for summer corn areas. Background technique [0002] Winter wheat-summer corn rotation is one of the main planting modes in North China. Due to the tight stubble time, corn is mostly planted by iron stubble sowing after wheat harvest, and the simultaneous sowing of seeds and fertilizers has gradually become the mainstream technology. The spacing between seed fertilizers is generally 5-8cm, and the depth of fertilization is 4-8cm. Although this method of fertilization competes for farming time, due to the small spacing between seeds and fertilizers, it brings problems such as burning seeds, burning seedlings, and defertilization of corn in the late growth period, thereby affecting corn production. In recent years, someone has proposed the corn subsoiling full-l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00A01G1/00
CPCA01C7/06A01C21/00A01G22/20
Inventor 杨云马贾良良贾树龙孙彦铭孟春香韩宝文迟吉娜杨军芳黄少辉
Owner INST OF AGRI RESOURCES & ENVIRONMENT HEBEI ACADEMY OF AGRI & FORESTRY SCI
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