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Cultivation method for intercropping ciliate desert-grass and corn through recycling

A cultivation method, the technology of centipede grass, is applied in the field of agronomy to control farmland soil pollution. It can solve the problems of long elimination cycle of heavy metals, long time spent on plants, and damage to soil structure, etc., so as to enhance individual quality of plants, improve fertilizer use efficiency, and improve soil quality. The effect of high water content

Inactive Publication Date: 2018-11-06
HONGHE COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing commonly used soil arsenic pollution control methods and their disadvantages are as follows: 1. Engineering measures method: directly replace polluted soil with clean soil, but the amount of work is large, the investment cost is high, and the soil structure is destroyed, resulting in a decrease in fertility; 2. Stability Solidification method: Stir chemical agents into polluted soil to directly wrap heavy metals in crystals, which can make the elimination period of heavy metals long, but the scope of action is narrow and the cost is high; 3. Physical and chemical restoration methods: use soil leaching and vitrification methods or electrochemical methods, but these methods often affect the content of other components in the soil, resulting in a decline in soil fertility; 4. Phytoremediation: plant a large number of plants that can enrich heavy metal arsenic in contaminated soil for absorption treatment, but In this way, the utilization rate of the soil is low, which affects the grain production, and it takes a long time to plant and repair the plants repeatedly, and the engineering volume is large.

Method used

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  • Cultivation method for intercropping ciliate desert-grass and corn through recycling
  • Cultivation method for intercropping ciliate desert-grass and corn through recycling
  • Cultivation method for intercropping ciliate desert-grass and corn through recycling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of cultivation method that recycles centipede grass interplanting corn, comprises the following steps:

[0032] (1) Deep loosening of the soil and furrowing and applying corn-based fertilizer: Select a piece of arable land heavily polluted by heavy metal arsenic around the Yunnan mining area, and mechanically prepare the polluted arable land during the handover period between the dry season and the rainy season from late April to early May. Use a plow with a subsoiling shovel to subsoil and plow the soil. The depth of subsoiling is 40cm. After subsoiling and plowing, use a rotary tiller to plow the soil. The diameter of the largest soil clod should be less than 3cm, so that the field can be flat and finely crushed. After the soil is rotary tilled, ditches are made around the field, with a depth of 40 cm and a width of 30 cm, which is convenient for field drainage during the rainy season to prevent waterlogging. In mid-to-late May, when the weather is fine and th...

Embodiment 2

[0040] A kind of cultivation method that recycles centipede grass interplanting corn, comprises the following steps:

[0041] (1) Deep loosening of the soil and furrowing and applying corn-based fertilizer: Select a piece of arable land that is seriously polluted by heavy metal arsenic around the Yunnan mining area, and carry out mechanical land preparation during the handover period between the dry season and the rainy season from late April to early May. The plow with the loose shovel performs deep loosening and plowing on the soil. The depth of subsoiling is 45cm, and the depth of plowing is 35cm. The diameter of the largest soil block on the top is less than 3cm, so that the field can be flat and finely divided. After the soil is rotary tilled, ditches are made around the field, with a depth of 45 cm and a width of 30 cm, which is convenient for field drainage during the rainy season to prevent waterlogging. In mid-to-late May, when the weather is fine and the soil is dry...

Embodiment 3

[0049] A kind of cultivation method that recycles centipede grass interplanting corn, comprises the following steps:

[0050] (1) Deep loosening of the soil and furrowing and applying corn-based fertilizer: Select a piece of arable land heavily polluted by heavy metal arsenic around the Yunnan mining area, and mechanically prepare the polluted arable land during the handover period between the dry season and the rainy season from late April to early May. Use a plow with a subsoiling shovel to carry out subsoiling and plowing to the soil. The depth of subsoiling is 50cm, and the plowing depth is 35cm. The diameter of the largest soil clod on the land after rotary tillage is less than 3cm, so that the field can be flat and finely divided. After the soil is rotary tilled, a ditch is opened around the field, with a depth of 50 cm and a width of 30 cm, which is convenient for field drainage during the rainy season to prevent waterlogging. In the middle and late May, when the weath...

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Abstract

The invention discloses a cultivation method for intercropping ciliate desert-grass and corn through recycling. By utilizing the characteristics of low accumulation of heavy metal arsenic in corn grains and high enrichment of heavy metal arsenic by perennial plants ciliate desert-grass, intercropping is conducted in cultivated land heavily polluted by heavy metal arsenic; the method comprises thefollowing specific steps of deep scarification of soil, ditching for application of corn base fertilizer, plant-shrinkage, closely-planting and optimized sowing of corn, intensive cultivation in a corn vegetative period, seedling-staggered method transplanting of the ciliate desert-grass, precise management of a ciliate desert-grass field, stubble-remaining cutting of the ciliate desert-grass andcoverage of corn straw, and circular planting of the corn and sustainable utilization of the ciliate desert-grass. Compared with a traditional habitual planting mode, the method has the advantages that through the specific steps, the yield of the corn grains can be significantly increased, the green-turning survival rate and biological yield of the ciliate desert-grass are significantly increased,and the absorption and treatment effect on heavy metal arsenic in the soil is significantly improved.

Description

technical field [0001] The invention relates to the technical field of agronomy for controlling farmland soil pollution, in particular to a cultivation method for interplanting corn with recyclable centipede grass. Background technique [0002] Corn is one of the most important food crops in my country, and has an important strategic position in ensuring national food security and sustainable economic development. Among them, Yunnan Province, which is located in the corn-growing belt in southwestern my country, has a stable corn planting area of ​​more than 1.3 million hectares per year, which plays an important role in supporting the development of local animal husbandry and stabilizing the source of income of ethnic minorities in the frontier. At present, with the advancement of corn technology and the continuous increase in production, people pay more and more attention to quality and safety, which requires fundamental attention to food safety. [0003] Due to its unique...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/20A01G22/00
CPCA01G22/00A01G22/20
Inventor 雷恩刘艳红施娴卢丙越王田涛袁寒陈卢发
Owner HONGHE COLLEGE
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