Soil conditioner for improving acidification and salinization of soil

A soil conditioner and soil improvement technology are applied in the field of soil improvement to achieve the effects of low cost and low cost

Inactive Publication Date: 2019-08-30
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both of the above two types of substances have good properties, but it has not been reported that the t

Method used

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  • Soil conditioner for improving acidification and salinization of soil
  • Soil conditioner for improving acidification and salinization of soil
  • Soil conditioner for improving acidification and salinization of soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1 test material

[0029] The acidified and salinized soil used in this experiment was taken from the soil in the multi-span greenhouse of Nanjing Linda Ecological Park. It is the vegetable planting soil that has been continuously cropped for 10 years. The last crop was lettuce, and there are serious problems of acidification and salinization. , the soil pH and EC values ​​are 5.56 and 2.76mS·cm-1, respectively, and the specific physical and chemical properties are shown in Table 1 and Table 2.

[0030] Table 1 Physicochemical properties of acidified and salinized soil and biochar

[0031]

[0032] 2. Experimental design

[0033] The experiment was carried out in the modern greenhouse of the Pailou Teaching and Experimental Base of Nanjing Agricultural University from January to June 2018. Soak the lettuce seeds in warm water at 50-55°C for 15 minutes, and then soak them in water at room temperature for 6-8 hours. Accelerate germination at 15-20°C. When almost all ...

Embodiment 2

[0047] 1. Test method

[0048] The experiment was carried out in a modern greenhouse at the Pailou Experimental Base of Nanjing Agricultural University from August 2018 to January 2019. Soak the lettuce seeds in warm water at 50-55°C for 15 minutes, and then soak them in water at room temperature for 6-8 hours. When almost all the seeds germinate and germinate neatly, put the seedling-raising substrate into a 72-hole hole tray and level it out. After watering it thoroughly with a watering can, sow the seeds in the hole tray, and then cover with a layer of 0.5cm substrate. When the lettuce grows to two leaves and one heart, it is planted in a cultivation pot for cultivation experiment. A total of 10 treatments (as shown in Table 5, all air-dried samples) were set up, with 15 pots for each treatment and 3 repetitions. During the test period, all treatments had the same water and fertilizer management. The soil basic physical and chemical properties, microbial content and enzy...

Embodiment 3

[0064] The rice straw charcoal and the vinegar residue matrix were mixed at a ratio of 0.8:1 (mass ratio, the same below), and then the two were applied to the soil at a ratio of 3% and evenly mixed.

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Abstract

The invention discloses a soil conditioner for improving acidification and salinization of soil. The soil conditioner is composed of biochar and vinegar lees at a mass ratio of (0.8-1.2):(0.8-1.2). The soil conditioner is added to the soil at a weight ratio of 3-5%, and can be used for improving acidified and/or salinized soil. Through the soil conditioner, the pH value of the soil can be increased, the EC value of the soil can be reduced, the urease and phosphatase activity of the soil can be improved, and the physical and chemical properties can be improved; and in addition, the photosynthetic ability of lettuce can be improved, the lettuce quality can be improved, and the lettuce yield can be increased. Above all, the soil acidification and secondary salinization hazards can be reducedthrough the method, the crop quality and yield can be increased, resources can be recycled, and environmental protection and high efficiency, cost saving and significant effects can be achieved.

Description

technical field [0001] The invention belongs to the field of soil improvement and relates to a soil conditioner for improving soil acidification and salinization. Background technique [0002] In the past 20 years, with the great transformation of my country's agricultural industrial structure, facility agriculture has become the most dynamic new rural industry today, playing an important role in the off-season planting of vegetables. Because the soil under cultivation conditions such as greenhouses and greenhouses lacks rainwater washing, and the temperature is high, the humidity is high, and the ventilation is poor, the water and fertilizer management cannot match the environment. In addition, the facility cultivation has been in a long-term high intensive, high multiple cropping index, and high fertilizer. Under the production state of application rate, its special ecological environment and unreasonable water and fertilizer management measures have led to a series of qua...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/80
CPCC05D9/00C05G3/80
Inventor 束胜王文晓郭世荣孙锦王玉田秘密赵丹
Owner NANJING AGRICULTURAL UNIVERSITY
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