Tobacco field soil improvement method

A soil improvement and tobacco field technology, applied in land preparation methods, agricultural machinery and implements, agricultural gas emission reduction, etc., can solve problems such as nutrient imbalance in tobacco planting soil, reduction of tobacco resistance, and reduction of fertilizer utilization rate.

CN104365208AActive Publication Date: 2015-02-25HENAN AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-02-25

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Abstract

The invention belongs to the technical field of soil improvement, and particularly relates to a tobacco field soil improvement method. The tobacco field soil improvement method is suitable for flue-cured tobacco planting regions in Chongqing, Henan, Shaanxi, Yunan, Guizhou and the like. The tobacco field soil improvement method includes the steps of sowing of ryegrass, turning and pressing of the ryegrass, application of a tobacco field conditioner, deduction of the tobacco fertilizing amount and the like. The proper green manure variety, the proper turning and pressing amount, the proper turning and pressing period and the proper turning and pressing mode which are needed when green manure is used for improving a tobacco field, the proper fertilizing amount after the green manure is turned and pressed and the like are utilized, the soil bulk density can be reduced, the soil porosity is increased, the soil organic matter content and the microbial population diversity are increased, water and soil loss of the tobacco field can be reduced, the effectiveness of soil nutrients is improved, the fertilizer utilization rate is increased, the appearance quality of tobacco is improved, the first-class tobacco proportion is increased, the interior quality is improved, sustainable development of tobacco production is facilitated, and remarkable social benefits and economic benefits are generated.
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Description

technical field

[0001] The invention belongs to the technical field of soil improvement, and in particular relates to a soil improvement method for tobacco fields, which is applicable to flue-cured tobacco planting areas such as Chongqing, Henan, Shaanxi, Yunnan, and Guizhou. Background technique

[0002] The use of green manure has a long history. Before the promotion of inorganic fertilizers, the planting and utilization of green manure, farmyard manure and other leguminous crops has always been the main source of increasing soil nutrient supply. China is the country with the longest green manure planting period, the largest area and the widest range in the world. According to incomplete statistics, the national green manure planting area in 1950 was 1.7 million hectares 2 , with an average of 57.6 hm 2 Arable land 1hm 2 Green manure; in 1976, the national green manure planting area reached about 13 million hm 2 , average 8 hm 2 Arable land has 1 hm 2 green manure. ...

Examples

Embodiment 1

[0021] 1. Test site

[0022] The test was arranged in Zhaojia Village, Wulong County. The soil texture of Zhaojia Village is paddy soil, 1036 meters above sea level, 107°33.588′ east longitude, 29°16.593′ north latitude, and the soil fertility is medium.

[0023] 2. Experimental design

[0024] The water content of ryegrass was determined to be 80wt%, and the nutrient content in the dry sample is shown in Table 1.

[0025] Table 1 Nutrient content of dry ryegrass samples (%)

[0026] .

[0027] Set the ryegrass fresh grass turnover to 7500kg / hm 2 、15000㎏ / hm 2 、22500㎏ / hm 2 、30000㎏ / hm 2 Four treatments (i.e. dry weight 1500kg / hm 2 、3000㎏ / hm 2 、4500㎏ / hm 2 、6000㎏ / hm 2 ), and the treatment without overturning ryegrass was used as the control.