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Water saving and fertilizer controlling ecologic governing and synergic utilizing method for heavily salinized land

A technology for severe saline-alkali land and ecological management, applied in fertilization methods, applications, fertilization devices, etc., can solve problems such as low efficiency of water and fertilizer use, and achieve the effect of improving utilization efficiency and saving fresh water resources

Active Publication Date: 2019-05-31
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved: the present invention aims at practical problems such as the safe use of brackish water in the process of planting crops in saline-alkali land, irrigation and salinity control of saline-alkali land, and low efficiency of water and fertilizer utilization, etc., and proposes an ecological management and synergistic utilization of water-saving and fertilizer-controlling in severe saline-alkali land The method not only solves the shortage of water resources for agricultural planting in arid areas and the salt control requirements for farmland irrigation in saline-alkali land, but also meets the ecological management needs of improving water and fertilizer use efficiency and increasing production and income in saline-alkali land

Method used

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  • Water saving and fertilizer controlling ecologic governing and synergic utilizing method for heavily salinized land
  • Water saving and fertilizer controlling ecologic governing and synergic utilizing method for heavily salinized land
  • Water saving and fertilizer controlling ecologic governing and synergic utilizing method for heavily salinized land

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Embodiment 1

[0032] The Hetao irrigation area in Inner Mongolia is a typical area where soil salinization develops in the arid area of ​​my country. The technical test site of the present invention is located in Chengni Village, Sandaoqiao Town, Hangjinhou Banner, Bayannaoer City, Inner Mongolia, which is a typical representative of saline-alkali land in the Hetao irrigation area. The average salt content of the 0-20cm soil on the surface of the test ground is 8.7g / kg, the average organic matter content is 8.9g / kg, the total nitrogen is 0.72g / kg, the alkaline nitrogen is 69.65mg / kg, the available phosphorus is 14.76mg / kg, and the available potassium 169.3mg / kg, cation exchange capacity CEC is 15.8cmol / kg, soil alkalinity ESP is 17.3%, 0-40cm soil is loam, 40-160cm is clay loam, 0-200cm profile soil bulk density is between 1.45-1.67g / cm 3 . From September 2017 to September 2018, with the technical solution of the present invention, a 15 mu sunflower planting experiment was carried out, a...

Embodiment 2

[0047] In the severely saline-alkali land of Hangjinhou Banner in the Hetao Irrigation Area of ​​Inner Mongolia, the soil salinity in the 0-20cm surface layer of the test ground is 7.4-9.6g / kg, the average salt content is 8.7g / kg, the average organic matter content is 8.9g / kg, the total nitrogen is 0.72g / kg, and the alkaline nitrogen is 69.65mg / kg, available phosphorus is 14.76mg / kg, available potassium is 169.3mg / kg, cation exchange capacity CEC is 15.8cmol / kg, soil alkalinity ESP is 17.3%, 0-40cm soil is loam soil, 40-160cm is Clay loam, the soil bulk density of 0-200cm profile is between 1.45-1.67g / cm 3 . Location: Kangerlai Planting and Breeding Professional Cooperative, Hangjinhou Banner, Bayannaoer City, Inner Mongolia, which is a typical representative of saline-alkali land in the Hetao irrigation area. The test period is from December 2017 to November 2018. The test plot was a saline-alkali wasteland in the early stage. After it was reclaimed in December 2016, it was ...

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Abstract

The invention discloses a water saving and fertilizer controlling ecologic governing and synergic utilizing method for a heavily salinized land. Ardealite is applied to the heavily salinized land; smash-ridging, subsoiling and uniform mixing are performed, and according to a soil salt control target, non-growth-period irrigation salt forcing is performed; after base fertilizer and humic acid are mixed, furrow application is performed, a drip irrigation zone is laid for membrane laminating and seed sowing, a soil depressimeter is embedded under the membrane, a geotechnical cloth is laid on theground surface between membranes, in the crop growth period, brackish water is adopted for drip irrigation water-fertilizer integration combined application of humic acid, according to the soil salt conditions and the crop water-fertilizer requirement characteristics, the drip irrigation moment is determined, and on the basis of the depressimeter, the irrigation water amount and the irrigation stopping time are determined. The problem that agricultural planting water resources in an arid region are lacked is solved, the requirement for salt control over saline-alkali soil farm irrigation is met, and the ecologic governing requirement for improving the saline-alkali soil water-fertilizer utilization efficiency and increasing production and income is met.

Description

technical field [0001] The invention belongs to the field of agriculture and ecology, and relates to a saline-alkali land ecological management and utilization method, in particular to a water-saving and fertilizer-controlling ecological management and efficiency-enhancing utilization method for severe saline-alkali land. Background technique [0002] Saline-alkali land is an important land resource, and there are about 27 million hm of saline-alkali land in my country 2 , of which 0.06 billion hm 2 Cultivated land, 21 million hm 2 Saline-alkali wasteland is mainly distributed in the inland areas of Northeast China, North China, Northwest China and the coastal area north of the Yangtze River. As a potential reserve land resource in my country, saline-alkali land has huge room for improving agricultural productivity, and its management is of strategic significance to realize the "expansion, quality improvement, and efficiency increase" of my country's cultivated land; at th...

Claims

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Application Information

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IPC IPC(8): A01C21/00
Inventor 姚荣江郑复乐杨劲松王相平陶建宇高慧敏
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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