Covering cultivation method for biodegradable mulching films in semi-arid region

A technology for degrading mulch and planting methods, applied in botany equipment and methods, plant protection covers, climate change adaptation, etc., can solve problems affecting agricultural mechanized farming, soil quality decline, threats to the health of feeding animals, etc., and achieve crop yield and water use efficiency, increase and maintain soil water content, and reduce the effect of soil water evaporation

Inactive Publication Date: 2013-10-09
GANSU AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to avoid the defects of the prior art, and propose a method for covering planting with biodegradable plastic film in semi-arid areas, to solve the problem of a large number of plastic film residues

Method used

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  • Covering cultivation method for biodegradable mulching films in semi-arid region
  • Covering cultivation method for biodegradable mulching films in semi-arid region

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Embodiment 1: a kind of covering planting method of biodegradable mulch film in semi-arid area, following steps:

[0066] (1) Field design; since the biodegradable mulch is easily broken, the coverage is required to be flat.

[0067] (2) Land preparation and ridging, and ground leveling: 7 days before crop sowing, soil preparation and ridging are carried out; the time for soil preparation, ridging and film covering is March 10-April 20; Under rainfall conditions, the initial runoff efficiency of the soil ridge was 8‐10%, and after one year of rainfall erosion and the formation of soil crusts, the runoff efficiency of the soil ridge was 20‐38%.

[0068] (3) Fertilization: Superphosphate 350‐420kg hm ‐2 and urea 220‐300kg hm ‐2 As a base fertilizer, the two kinds of fertilizers are mixed and sprinkled on the soil surface before sowing, and then poured into the soil, and the fertilization depth is 20-30cm; it is not allowed to mix crop seeds and urea to avoid burning see...

Embodiment 2

[0085] Embodiment 2: The method of covering planting (full coverage of furrows and ridges) of biodegradable plastic film in the semi-arid area also includes the following steps:

[0086] The step 1) field design, designing the micro-topography between large ridges and small ridges in the field;

[0087] Step 2) Arranging the land and raising the ridge; the width and height of the large ridge are 60-70cm and 20-25cm respectively, the angle between the ridge surface and the ground is 40-45°, and the top of the ridge is arc-shaped; the width and height of the small ridge 40-50cm and 10-15cm respectively, the angle between the ridge surface and the ground is 35-40°, and the top of the ridge is arc-shaped;

[0088] Step 3) Covering with biodegradable plastic film, after the ridges are raised, compact the soil ridges with tools (shovels) to make the width and height of the soil ridges meet the requirements, and then cover the soil with a biodegradable plastic film with a width of 14...

Embodiment 3

[0091] Embodiment 3: The method for covering planting of biodegradable plastic film in the semi-arid area (covering planting with combination of furrows and ridges) also includes the following steps:

[0092] The step 1) field design, design the micro-topography of furrows and ridges in the field;

[0093] Described step 2) tidy up the land and ridging; the width and height of the ridge are 40-50cm and 15-20cm respectively, and the width of the ditch is 57-63cm; The width and height meet the requirements of step 1);

[0094] In step 3) planting, the crop seeds are sown into the ditch, and the ditch is evenly covered with wheat straw after the crop is sown, and the wheat straw is cut into 3-5cm long fragments, which are evenly covered in the ditch at one time. 7500‐8000kghm ‐2 , then sprinkle 4000‐5000kg hm ‐2 Cover the stalks with crushed soil to prevent the stalks from being blown away by the wind. After harvesting, plow the stalks into the soil at a depth of 20-30cm;

[...

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Abstract

The invention mainly relates to a covering cultivation method for mulching films, in particular to a covering cultivation method for biodegradable mulching films in a semi-arid region. The covering cultivation method is mainly characterized by comprising the following steps of 1, designing in fields, 2, tidying land, ridging and flattening the ground 3, fertilizing, 4, covering the biodegradable mulching films, 5, sowing, 6, managing in the fields, 7, harvesting, and 8, ploughing and burying mulching film residues into soil at the depth of 20-30cm instead of collecting the mulching film residues after the crops are harvested. The land tidying and ridging are carried out 7 days before crops are sowed, the covering tension of the biodegradable mulching films is 1/6 to 1/8 of the tension of ordinary mulching films, the biodegradable mulching films are 3-5mm away from the ground, and the biodegradable mulching films are covered 7 days before sowing. The covering cultivation method has the advantages that due to the fact that the biodegradable mulching films have high air tightness, the covered mulching films can reduce soil moisture evaporation and increase land temperature, can increase soil moisture, accelerates crop growth and development, and improves crop yield. Compared with traditional cultivation (covering-free convection planting), a maturation stage of crops covered by the biodegradable mulching films can be brought 7-10 days forwards, and the crop yield and the moisture utilization rate can be respectively improved by 1-58% and 14-45%.

Description

Technical field: [0001] The present invention mainly relates to a covering planting method of a plastic film, in particular to a covering planting method of a biodegradable plastic film. Background technique: [0002] The Loess Plateau area is covered with deep loess, deep in the hinterland of the mainland, and the terrain is mostly beams, hills, hills and gullies. The Loess Plateau region mainly relies on natural precipitation, which is insufficient and frequently changes, resulting in frequent drought disasters and low and unstable grain production. This area has strong solar radiation and sufficient sunshine, large temperature difference between day and night, strong evaporation (potential evaporation 1531mm), less precipitation (annual average rainfall 386.10mm), dry air, and low rainwater utilization efficiency. According to measurements, only 25%-30% of rainfall in this area is absorbed and utilized by crops, while 70%-75% of rainfall is lost through evaporation and r...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G13/02
CPCY02A40/28
Inventor 王琦刘青林张恩和
Owner GANSU AGRI UNIV
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