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Facility secondary NO3<-> salinized soil improver, preparation method thereof and improving method

A soil conditioner and soil improvement technology, applied in the field of secondary NO3-salinated soil conditioners in facilities, can solve the problems that microbial cells cannot perform normal metabolic activities, cannot perform normal activities, and soil osmotic pressure, etc. The effect of salt leaching, improving soil structure and reducing soil salinity

Active Publication Date: 2014-09-24
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] According to research, the accumulation of salt in the secondary salinized soil of the facility will cause the soil osmotic pressure to be too high, which in turn will cause the microbial cells to be unable to perform normal metabolic activities due to excessive dehydration
Therefore, after the microbial agent in the above patent enters the soil, it may not be able to function normally or be fatal.

Method used

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  • Facility secondary NO3&lt;-&gt; salinized soil improver, preparation method thereof and improving method
  • Facility secondary NO3&lt;-&gt; salinized soil improver, preparation method thereof and improving method
  • Facility secondary NO3&lt;-&gt; salinized soil improver, preparation method thereof and improving method

Examples

Experimental program
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preparation example Construction

[0033] The preparation method of soil conditioner A comprises the steps:

[0034] The first step is to mix stalk powder, rice bran and rapeseed cake evenly, add EM stock solution and brown sugar to the mixture, and then add water to make the water content about 35%;

[0035] The second step is airtight fermentation, the fermentation temperature is above 22°C, and the fermentation time is 10-26 days.

[0036] After the preparation is completed, it is best to adjust the C / N ratio of the improver, it is best to use straw powder to adjust the C / N ratio to 30-50, N+P 2 o 5 +K 2 O≧5%.

[0037] In this example, straw powder (C / N is 65-85:1), rice bran (C / N is 18-22:1), and rapeseed cake (C / N is 9-13:1) are all available on the market. purchased. Among them, this embodiment preferably prepares products with a C / N ratio between 30 and 50. The basis for the selection of C / N is as follows: microorganisms need to consume necessary nutrients and energy to maintain life activities and...

Embodiment 1～4

[0043] The preparation of embodiment 1~4 soil conditioner

[0044] The soil improver A of the present invention, after mixing raw materials in different proportions, adjusts the water content to about 35% (w / w), puts it into a plastic bucket with a cover for airtight fermentation, the fermentation temperature is above 22°C, and the fermentation time is 10-26 After 1 day, the fermentation is completed when the aroma is released, and the C / N ratio is adjusted to 30-50 with straw powder. The raw material components are as follows:

[0045]

[0046] Soil conditioner B is prepared according to the following steps:

[0047] The first step, the Ca(NO 3 ) 2 、KNO 3 , NaCl and KCl were mixed according to the mass ratio of 5:3:1:1, as an inorganic salt mixture, a 0.5wt% inorganic salt solution was prepared, and glucose was used as a carbon source, and 1-2mL EM stock solution was inoculated to 100mL inorganic salt The mixture was placed in a 250mL Erlenmeyer flask, 30°C, 170r / min ...

Embodiment 5

[0050] The soil improver obtained in Example 1 was selected for tomato planting on different types of soil.

[0051] Among them, soil 1 is the soil of normal facilities, and no secondary salinization of soil occurs.

[0052] Soil 2 is medium-slight facility secondary salinized soil, with total salt content of 2.10g / kg, soil nitrate nitrogen of 0.44g / kg, and pH6.1.

[0053] Soil 3 is to adopt the soil improver of embodiment 1 on the basis of soil 2 to carry out soil improvement. The specific method is: the plow layer soil (0~10cm) of the facility to be planted is piled up into a height of 35~40cm, according to 1‰ The mass ratio of the improved agent A was added, mixed well, and then co-cultivated at 35-50°C for 5-7 days. One day before crop planting, the soil surface was covered with 0-10cm, and tomato seedlings were transplanted. After 7 days, the crops The rhizosphere was sprayed with 500-fold diluted improver B (amount of 3000kg / ha); after that, the improver B was sprayed o...

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Abstract

The invention discloses a facility secondary NO3<-> salinized soil improver and an improving method, and provides preparation processes and application methods of biological soil improvers A and B, wherein the soil improver A is solid, has the C / N of 30-50, is prepared through microbial fermentation by taking straw powder, rice bran and other substances as raw materials, and is used through the steps of uniformly mixing the facility secondary NO3<-> salinized soil improver and facility farming soil according to the mass ratio of 0.1-0.14%, then, co-culturing at the temperature of 35-50 DEG C for 5-7 days, and then, returning the facility secondary NO3<-> salinized soil improver to the field to use; the soil improver B is liquid, is an effective microbial flora obtained after salt-tolerant domestication, and is used for the growth period of crops. The facility secondary NO3<-> salinized soil improver is based on a microbial technology and can be used for improving the soil structure, enhancing the microbial activity of soil and improving the biological fixation for inorganic nitrogen in soil, so that the content of soluble nitric nitrogen in soil can be further reduced, the yield of facility cultivated crops can be remarkably increased, and the quality of the facility cultivated crops can be remarkably improved.

Description

technical field [0001] The present invention relates to facility secondary NO 3 - The saline soil improver, preparation method and improvement method belong to the technical field of soil improvement. Background technique [0002] In my country, fertilizer input is an important part of facility agricultural production, and its general characteristics are excessive fertilization, application of raw organic fertilizers, and uncoordinated ratios of nitrogen, phosphorus, and potassium. Because the input of fertilizer in a short period of time has a significant effect on improving the yield, in order to pursue high yield, usually excessive fertilizer is put in, which greatly exceeds the actual absorption of crops, and the fertilizer remaining in the soil becomes the main source of salt ions, resulting in The degree of secondary salinization of facility soil is deepening year by year, soil microbial flora imbalance, soil compaction and other problems have caused the soil environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/00A01B79/00C09K101/00C05G3/80
CPCA01G22/00C05B17/00C05F11/08C09K17/52C05G3/80Y02A40/28A01C21/005C09K17/00C09K17/14
Inventor 常婷婷邵孝候徐会连王伟娜陈立华毛欣宇王春芳
Owner HOHAI UNIV
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