Method of soil improvement in tobacco field
A technology for soil improvement and tobacco fields, applied in the fields of soil preparation methods, applications, agricultural machinery and tools, etc., can solve problems affecting soil physical structure, soil environmental pollution, single effect, etc., to improve yield and quality, increase output value, and be good Tobacco Field Soil Conservation Effect
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Embodiment 1
[0047] Choose an area of 0.2hm 2 , Tobacco paddy fields with severe acidification and serious soil-borne diseases such as bacterial wilt.
[0048] Improvement method:
[0049] Crush the rice straw collected around the tobacco field to a particle size of 20-50mm, and spread it in the tobacco field at a rate of 45t / hm 2 ;
[0050] Spread quicklime into the tobacco field at a rate of 3000kg / hm 2 ;
[0051] After spreading, plow the tobacco field deeply and rake evenly;
[0052] Irrigate the tobacco field until the soil is nearly saturated, then continue to irrigate, maintain a 3-5cm water layer on the field surface, and maintain an anaerobic reducing environment for 15 days at an oxidation-reduction potential of -50-200mV;
[0053] Let it dry naturally after draining, and then plow and rake evenly.
[0054] The soil pH value of the unimproved control tobacco field was 4.50, the organic matter content was 21.40mg / kg, the carbon-nitrogen ratio was 10.1, and the incidence ra...
Embodiment 2
[0056] Choose an area of 0.14hm 2 , Tobacco paddy fields with severe acidification and serious soil-borne diseases such as bacterial wilt.
[0057] Improvement method:
[0058] Dry and crush the wheat straw collected from the plots around the tobacco field to a particle size of 10-20mm, and spread it to the tobacco field at a rate of 35t / hm 2 ;
[0059] Apply lime nitrogen to the tobacco field at a rate of 1500kg / hm 2 ;
[0060] After spreading, plow the tobacco field deeply and rake evenly;
[0061] Irrigate the tobacco field until the soil is nearly saturated, then continue to irrigate, maintain a 3cm water layer on the field surface, and maintain an anaerobic reducing environment for 20 days at an oxidation-reduction potential of -100 to -200mV;
[0062] After draining, let it dry naturally, then plow and dry it in the sun for 5 days.
[0063] The soil pH value of the unimproved control tobacco field was 5.04, the organic matter content was 21.73 mg / kg, the carbon-n...
Embodiment 3
[0065] Choose an area of 0.1hm 2 dry land.
[0066] Improvement method:
[0067] Crush the wheat straw collected around the tobacco field to a particle size of 30-50mm, and spread it in the tobacco field at a rate of 25t / hm 2 ;
[0068] Spread quicklime into the tobacco field at a rate of 1500kg / hm 2 ;
[0069] After spreading, plow the tobacco field deeply and rake evenly;
[0070] Irrigate the tobacco field with water until the soil is saturated, and cover the ground with a transparent plastic film to maintain a temperature-appropriate anaerobic reducing environment, so that the soil temperature of the 10cm surface layer inside the film reaches above 30°C, and the oxidation-reduction potential is 0 to -100mV;
[0071] When the water content of the soil under the film is lower than 80% WHC, continue to irrigate until the soil is saturated, so that the soil temperature of the surface 10cm inside the film reaches above 30°C, the oxidation-reduction potential is -50~-100m...
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