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Chemical combined application technology of semi-arid area under situation of different soil clay contents

A semi-arid and regional technology, applied in the fields of application, land preparation method, agricultural machinery and implements, etc., can solve the problems of joint application of PAM and SAP, etc., to achieve enhanced soil structure stability, complementary effects, and quick results. Effect

Inactive Publication Date: 2014-05-21
INST OF WATER CONSERVANCY SCI RES OF INNER MONGOLIA AUTONOMOUS REGION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, PAM and SAP are used independently in the field of soil and water conservation and agricultural water saving, and there is no joint application technology of PAM and SAP

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: Chayouzhong Banner Carrot Planting Area

[0014] The site is located in Wusutu Village, Chayou Middle Banner, Ulanqab City. The soil mechanical composition is: clay, silt and sand content are 12.5%, 2.5% and 85% respectively. It is loamy sandy soil, and the soil field water capacity is 12%, the soil bulk density is 1.55g / cm 3 , the planting crop is carrot (Hongying No. 2), and the row spacing of carrot is: 20cm. The method of fertilization is one-time application of sufficient base fertilizer, and the base fertilizer is 2m of organic fertilizer 3 / mu + diammonium hydrogen phosphate 5kg / mu. Carrot planting furrow specifications: furrow length 50m, furrow width 3m. The irrigation method is border irrigation, the irrigation quota is 500 m3 / mu, and the irrigation frequency is 10 times. The average annual rainfall in this area is 260mm, and the evaporation is 2800mm. After the first watering after sowing, crusting was evident on the ground surface, which s...

Embodiment 2

[0017] Embodiment 2: Application in the potato planting area of ​​Shangdu County

[0018] The application site is located in the reclamation team of Shangdu County, Ulanqab City. The soil clay, silt and sand contents are 18.75%, 11.25% and 70% respectively, which is a typical sandy loam soil. The field water holding capacity of the soil is 18%, and the soil bulk density is 1.4g / cm 3 . The test potato variety is Chapotle, and the row spacing of potato plants is prepared: row spacing × plant spacing = 90cm × 18cm, planted on high ridges; potato base fertilizer is 3m of organic fertilizer 3 / mu and special fertilizer for potatoes (N:P 2 o 5 : K 2 0=12:15:18, the total amount of nutrients ≥ 45%, the application rate is 30kg mu -1 . The irrigation method is clockwise sprinkler irrigation, the number of irrigation times in the whole growth period is 14 times, and the total amount of irrigation water is 280 m3 / mu. Dry powder water retaining agent (SAP, 0.5-2mm, in tap water, ...

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Abstract

The invention discloses a chemical combined application technology of a semi-arid area under the situation of different soil clay contents. The application technology includes the selection of polyacrylamide(PAM) and super absorbent polymers(SAP), the PAM application method and the SAP mixed application method. The application technology effectively solves the problem that as the stability of the soil structure is poor, the earth surface crusts easily, the water and fertilizer storage capacity of soil is low, and the release speed is high, the water and fertilizer utilization rate of the semi-arid area is low. The application technology can also solve the problems that most soil in the semi-arid area is low in water storage capacity, and the surface layer of soil crusts easily. Growth of crops can be promoted and the yield and quality can be improved by adopting different PAM or SAP combined adjusting and controlling technologies according to the soil clay contents. The application technology becomes effective rapidly and is long in effectiveness time, the number of soil aggregates is remarkably increased the same year of application, the stability of the soil structure is remarkably enhanced, the effectiveness time is at least three years after application is carried out for one year, and the application technology is a soil structure improved technology with great application prospects.

Description

technical field [0001] The invention relates to a soil chemical joint regulation technology, in particular to a chemical joint application technology under different soil clay content conditions in a semi-arid area. Background technique [0002] my country is a country with a large semi-arid area (annual average precipitation is 250-500 mm) in the world. The semi-arid area accounts for 21.7% of the country's land area, and the cultivated land area is about 20 million hm 2 , accounting for 21% of my country's cultivated land area. Therefore, the semi-arid area occupies an important position in my country's food security. However, the rainfall in this area is relatively concentrated, evaporation is relatively strong, drought is easy, and soil erosion by wind and water is relatively serious, resulting in low water use efficiency of crops and difficult to show agricultural production potential. [0003] The main reasons for the low water use efficiency are as follows: First, th...

Claims

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Application Information

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IPC IPC(8): A01B79/02
Inventor 于健史吉刚宋日权
Owner INST OF WATER CONSERVANCY SCI RES OF INNER MONGOLIA AUTONOMOUS REGION
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