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Method for increasing content of urease and phosphatase in farmland

A medium urease and phosphatase technology, applied in soil preparation methods, fertilization methods, agricultural machinery and implements, etc., can solve problems such as excessive nitrate content in groundwater, eutrophication in surface water, and decline in crop yield, so as to promote absorption and increase Urease and phosphatase content, effects of avoiding eutrophication

Active Publication Date: 2019-06-21
CHINESE RES ACAD OF ENVIRONMENTAL SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For this reason, what the present invention is to solve is that the existing fertilization rate is too little to cause the crop yield to decline, and the fertilization rate causes surface water eutrophication, the content of groundwater nitrate to exceed the standard and the N in the atmosphere. 2 environmental issues such as increased O emissions, and thus provide a method to increase the content of urease and phosphatase in farmland

Method used

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  • Method for increasing content of urease and phosphatase in farmland
  • Method for increasing content of urease and phosphatase in farmland

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present embodiment provides a kind of method that improves urease and phosphatase content in farmland, comprises the steps:

[0036] (1) After the crops are harvested in the current year, the farmland is prepared for furrowing. During the process of land preparation and furrowing, the area of ​​each furrow is 200 square meters, and the height of the furrow stem is 8cm;

[0037] (2) On September 6, the potato processing wastewater was left to settle to remove impurities until the solid content was ≤5wt%, and then the potato processing wastewater was mixed with clean water to form a mixture, and the volume ratio of the potato processing wastewater to clean water in the mixture was 40 : 160, based on the potato processing wastewater and water, the total amount of spraying is 200m 3 / mu, the above mixture is sprayed on the farmland after the preparation and furrow for several times, and the amount of each application is 40m 3per mu, apply once every 3 days until the a...

Embodiment 2

[0041] The present embodiment provides a kind of method that improves urease and phosphatase content in farmland, comprises the steps:

[0042] (1) After the crops are harvested in the current year, the farmland is prepared for furrowing. During the process of land preparation and furrowing, the area of ​​each furrow is 150 square meters, and the height of the furrow stem is 10cm;

[0043] (2) On September 6, the potato processing wastewater was left to settle to remove impurities until the solid content was ≤5wt%, and then the potato processing wastewater was mixed with clean water to form a mixture, and the volume ratio of the potato processing wastewater to clean water in the mixture was 40 : 160, based on the potato processing wastewater and water, the total amount of spraying is 200m 3 per mu, the above mixture was sprayed on the farmland after plotting and furrowing several times, and the amount of each application was 30m 3 per mu, apply once every 2 days until the app...

Embodiment 3

[0047] The present embodiment provides a kind of method that improves urease and phosphatase content in farmland, comprises the steps:

[0048] (1) After the crops are harvested in the current year, the farmland is prepared for furrowing. During the process of land preparation and furrowing, the area of ​​each furrow is 300 square meters, and the height of the furrow stem is 5cm;

[0049] (2) On September 6, the potato processing wastewater was left to settle to remove impurities until the solid content was ≤5wt%, and then the potato processing wastewater was mixed with clean water to form a mixture, and the volume ratio of the potato processing wastewater to clean water in the mixture was 40 : 160, based on the potato processing wastewater and water, the total amount of spraying is 200m 3 per mu, the above mixture was sprayed on the farmland after plotting and furrowing several times, and the amount of each application was 50m 3 per mu, apply once every 4 days until the appl...

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Abstract

The invention provides a method for increasing the content of urease and phosphatase in a farmland. According to the method, a certain amount of potato and / or sweet potato starch processing wastewateris sprayed on the farmland subjected to soil preparation and bedding for the first time, the farmland is subjected to deep tillage and soil preparation after the potato and / or sweet potato starch processing wastewater is sprayed, the tillage depth is 30-50 cm, and it is found that the content of urease and phosphatase in the farmland can be significantly improved. Compared with application of aninorganic fertilizer, the method can increase the content of urease and phosphatase in soil by at least 25% or more, organic nitrogen and phosphorus macromolecules in soil can be decomposed and transformed into inorganic salts by urease and phosphatase, the adsorption of crops to nitrogen, phosphorus and other nutrients is promoted, and the fertilizer utilization rate and the soil fertility are improved finally. Meanwhile, the yield per mu of maize is increased by at least 20% or more when maize is planted in the field treated by the method; compared with single application of a chemical fertilizer (with the equivalent N content), the yield per mu of maize can be increased by 20%-35%.

Description

technical field [0001] The invention belongs to the technical field of fertilization, and in particular relates to a method for increasing the content of urease and phosphatase in farmland. Background technique [0002] After the use of chemical fertilizers began to be popularized in my country's agricultural production in the 1980s, inorganic fertilizers became the dominant fertilizers that determine crop yields. In order to pursue crop yields, farmers usually apply excessive amounts of chemical fertilizers (biased application of nitrogen fertilizers). This method not only causes waste of fertilizers and low economic benefits, but also causes soil compaction and fertility decline. Unused fertilizers will bring land surface Water eutrophication, excessive nitrate content in groundwater, and atmospheric N 2 Environmental issues such as increased O emissions. [0003] However, if the application amount of chemical fertilizers is reduced, it will bring the defect of crop yiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01C21/00C05F7/00
CPCY02A40/20
Inventor 赵博超王雪婷苑喜男朱克松窦广玉刘刚王天宁王小虎潘涔轩
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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