Topsoil salt-control method of planting salt-tolerant plant in mudflat kaline soil

A saline-alkali land and soil technology, applied in the fields of planting and saline-alkali land improvement and management, can solve problems such as low water resource utilization efficiency, poor salt control effect, unscientific technology use, etc., and achieve real-time monitoring dynamic effects and stable data.

Inactive Publication Date: 2010-02-17
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to propose a set of water-resource utilization efficiency, unscientific use of technology, outdated monitoring means, and poor salt control effect in the current salt c...

Method used

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  • Topsoil salt-control method of planting salt-tolerant plant in mudflat kaline soil
  • Topsoil salt-control method of planting salt-tolerant plant in mudflat kaline soil

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Experimental program
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Embodiment

[0014] The main links of soil salinity control in plow layer are as follows:

[0015] a. Investigate and determine the profile distribution and seasonal dynamic characteristics of soil salinity

[0016] In areas where salt-tolerant plants are planted in tidal flat saline-alkali land, through the analysis of soil salinity survey data, the profile distribution characteristics of soil salinity under different seasonal conditions and the time-series dynamics and periodic changes of soil salinity in the same profile, such as seasonal salt accumulation period , salt washing period and salt balance period in rainy season;

[0017] b. According to the salt tolerance threshold of planting varieties, determine the salt control standards in the year and at different depths of soil

[0018] According to the periodic dynamic law of soil salinity in tidal flat section, combined with the salt-tolerant threshold range of salt-tolerant plant species, the soil salt control standard is determin...

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Abstract

The invention relates to a topsoil salt-control method for planting a salt-tolerant plant in mudflat kaline soil, which comprises the step of determining the freshwater salt-sprinkling watering amountaccording to the salinity content background of soil, a salt-tolerant threshold value of a planted plant, a slat-control target value, actual measured data of salinity dynamic state, actual measureddata of the water content of the soil, a predicted value of rainfall and evaporation within the past few days and soil permeability. The method is characterized in that a four-electrode salinity sensor and a digital soil water potential monitor are adopted to monitor the water-salt dynamic state of the topsoil in real time, one monitoring site is arranged per 1-10 mu, and monitoring signals collected by each monitoring site are intensively processed, thereby realizing the overall real-time monitoring of an irrigation process and a salt leaching effect.

Description

1. Technical field [0001] The invention belongs to saline-alkali land improvement and planting technology in agriculture and forestry, and in particular relates to a plow layer soil salt control method for planting salt-tolerant plants in coastal beach saline-alkali land. 2. Background technology [0002] At present, my country's water and soil resources can only guarantee the production capacity of about 500 million tons of grain, which is far from meeting the huge demand of the growing population. At the same time, my country's energy shortage is becoming increasingly acute. To a certain extent, the contradiction of energy shortage can be alleviated, and the development of biomass energy will also compete with food production for arable land. my country currently has various types of coastal tidal flats with a total area of ​​nearly 40 million mu, which are important reserve land resources in our country. The development and utilization of saline-alkali soil in coastal tida...

Claims

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Application Information

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IPC IPC(8): A01B79/00G01N27/00B09C1/02
CPCY02A40/10Y02A40/22
Inventor 杨劲松姚荣江赵秀芳韩建均刘广明
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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