Method for mixed planting of cotton, sorghum and green manure crop to improve saline-alkaline soil

A technology for green manure crops and saline-alkali land, which is applied in the fields of land preparation methods, botanical equipment and methods, cotton cultivation, etc. Effect of dosage and frequency of application

Active Publication Date: 2018-01-12
SHANDONG COTTON RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Cotton and sorghum have strong salt tolerance and are suitable for planting in saline-alkali land. However, at present, cotton or sorghum is mostly used as single cropping or continuous cropping in saline-alkali land in the Yellow River Delta.

Method used

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  • Method for mixed planting of cotton, sorghum and green manure crop to improve saline-alkaline soil
  • Method for mixed planting of cotton, sorghum and green manure crop to improve saline-alkaline soil
  • Method for mixed planting of cotton, sorghum and green manure crop to improve saline-alkaline soil

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0059] Example 1

[0060] The experiment was carried out in Lijin County, Dongying City, and the soil salt content was 0.4%. The cotton variety K836, the dwarf sorghum variety Suiza 7 and Lvfei Xutiao 3 were used as test materials. In 2014, 10 copies of deep ploughing and drying were carried out (the ploughing depth was 30cm). In late March 2015, the saline-alkali soil of deep ploughing and sunburning will be prepared for arable land, and 2t organic fertilizer and NPK compound fertilizer (18%N, 12%P 2 O 5 , 18% K 2 O) 40kg as base fertilizer. Irrigate the saline-alkali land after the above-mentioned land preparation with pressure salt (the irrigation volume per mu is 70m 3 ), to obtain the salt-alkali land after pressing the salt. Sow sorghum and cotton were planted on April 26. Cotton is planted with 76cm row spacing, and the planting density is 6,500 plants / mu. Sorghum is planted with a row spacing of 38 cm, and the planting density is 10,000 plants / mu. 4 rows of cotton in...

Example Embodiment

[0062] Example 2

[0063] The experiment was carried out in Kenli County, Dongying City, and the soil salt content was 0.7%. Cotton variety K836, dwarf sorghum variety Suiza 7 and Ziyunying Minzi 1 were used as test materials. In 2014, 10 copies of deep ploughing and drying were carried out (the ploughing depth was 35cm). In late March 2015, the saline-alkali soil of deep ploughing and sunburning will be prepared for arable land, and 2t organic fertilizer and NPK compound fertilizer (18%N, 12%P 2 O 5 , 18% K 2 O) 40kg as base fertilizer. Irrigate the saline-alkali land after the above-mentioned land preparation with pressure salt (the irrigation volume per mu is 150m 3 ), to obtain the salt-alkali land after pressing the salt. Sorghum and cotton were planted on April 18. Cotton is planted with 76cm row spacing, and the planting density is 6000 plants / mu. Sorghum is planted with a row spacing of 38 cm, and the planting density is 11,000 plants / mu. 4 rows of cotton intercroppe...

Example Embodiment

[0065] Example 3

[0066] Pure-cropping cotton, pure-cropping sorghum and traditional cotton-sorghum intercropping (4 rows of cotton intercropping and 1 row of sorghum). Other conditions are exactly the same as those in Example 1. They are used as control groups 1 to 3 respectively. The yields of cotton and sorghum treated in each group are counted, and After each annual harvest, soil samples were taken to determine the soil salt and nutrient content, and the cotton plant protection times were recorded. The specific data are shown in Table 1.

[0067] Table 1 Cotton and sorghum yields and soil conditions under different treatments

[0068]

[0069]

[0070] It can be seen from Table 1 that the equal-width intercropping rotation mode provided by the present invention is comparable to cotton and sorghum single cropping, and the output of cotton and sorghum in 2015 is equivalent. However, in 2016, the yields of model cotton and sorghum provided by the present invention were significant...

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Abstract

The invention provides a method for mixed planting of cotton, sorghum and green manure crop to improve saline-alkaline soil and belongs to the technical field of crop mixed planting. The method includes following steps: performing deep ploughing and unturned soil sunning from October to November of the first year to obtain saline-alkaline soil after unturned soil sunning; performing watering and salt pressing on the saline-alkaline soil before seeding cotton and sorghum to obtain saline-alkaline soil after salt pressing in the second year; in the middle to late of April of the second year, seeding cotton and sorghum in the saline-alkaline soil after salt pressing to form a cotton seeding belt and a sorghum seedling belt; intercropping cotton and sorghum by uniform amplitude: intercropping7 rows of sorghum with 4 rows of cotton; in the middle to late of August of the second year, harvesting sorghum, and broadcasting green manure crop seeds at sorghum stubbles; on October of the secondyear, defoliating the cotton for accelerating ripening, and harvesting the cotton; from late March to early April of the third year, directly turning and burying the green manure crop, and performingrotary tillage to prepare soil. After adopting the method for mixed planting, salt content of land is remarkably lowered, effect on improving the saline-alkaline soil is obvious, and yield of the cotton and the sorghum can be increased effectively.

Description

technical field [0001] The invention belongs to the technical field of land improvement, and in particular relates to a method for improving saline-alkali land by mixing cotton, sorghum and green manure crops. Background technique [0002] Saline-alkali land is a type of salt accumulation, which means that the salt contained in the soil affects the normal growth of crops. According to the incomplete statistics of UNESCO and FAO, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which my country is the largest 99.13 million hectares. The formation of alkaline soil and alkalized soil in my country is mostly related to the accumulation of carbonate in the soil, so the degree of alkalization is generally high, and plants in severe saline-alkali soil areas can hardly survive. [0003] Cotton and sorghum have strong salt tolerance and are suitable for planting in saline-alkali land. However, at present, cotton or sorghum is mostly used as single cropping...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01G22/20A01G22/50A01G13/00
Inventor 代建龙董合忠张晓洁张冬梅李维江
Owner SHANDONG COTTON RES CENT
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