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Combined rotational tillage method capable of harvesting high-yield wheat and corn twice and improving organic carbon content

An organic carbon and combined wheel technology, which is applied in the fields of botany equipment and methods, horticulture, plant cultivation, etc., can solve the problems of high tillage frequency, great destructiveness of the plough layer soil, and high cost and expenditure, so as to accelerate the decomposition of straw, improve the The effect of water storage and moisture retention and low cost

Active Publication Date: 2017-11-03
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this rotation mode, various rotation combinations in the same year bring about repeated cultivation, high farming frequency, high cost, and great damage to the soil in the plow layer.

Method used

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  • Combined rotational tillage method capable of harvesting high-yield wheat and corn twice and improving organic carbon content
  • Combined rotational tillage method capable of harvesting high-yield wheat and corn twice and improving organic carbon content
  • Combined rotational tillage method capable of harvesting high-yield wheat and corn twice and improving organic carbon content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A high-yield and high-efficiency combined rotation method for wheat and jade double cropping, comprising the following steps:

[0027] (1) After summer corn is harvested and before winter wheat is planted, crush the corn stalks to a length less than 5cm, return them to the field, and then carry out subsoiling. The subsoiling range is 60cm, and the subsoiling depth is 35cm. Plowing and deep loosening times are 2 times; the first deep loosening range is 60cm, and the second deep loosening is carried out at intervals within 60cm width, followed by shallow rotary tillage with a depth of 6cm, and the number of times of shallow rotary tillage For 2 times, the straw is fully mixed with the soil. After the winter wheat is harvested in the next year and before the summer corn is sown, the wheat straw is covered and returned to the field. The corn is sown with no tillage, and the wheat straw is evenly covered between the rows;

[0028] (2) In the next cropping period, after summe...

Embodiment 2

[0031] (1) After summer corn is harvested and before winter wheat is planted, crush the corn stalks to a length less than 5cm, return them to the field, and then carry out subsoiling. The subsoiling range is 65cm, and the subsoiling depth is 40cm. plowing and deep loosening times are 2 times; the first deep loosening range is 65cm, the second deep loosening is carried out at intervals within 65cm width, and then shallow rotary tillage is carried out, the depth of rotary tillage is 8cm, and the number of times of shallow rotary tillage For 2 times, the straw is fully mixed with the soil. After the winter wheat is harvested in the next year and before the summer corn is sown, the wheat straw is covered and returned to the field. The corn is sown with no tillage, and the wheat straw is evenly covered between the rows;

[0032] (2) In the next cropping period, after summer corn is harvested and before winter wheat is planted, crush the corn stalks to a length of less than 5 cm and ...

experiment example 1

[0037] Experimental example 1: The effect of rotation mode on wheat and corn yields:

[0038]Conservation tillage long-term location test (Tai'an City), the test adopts wheat (Triticum aestivum L.) - corn (Zea mays L.) two-cropping planting pattern a year, and the test group adopts the combination wheel with high yield and organic carbon content of the present invention. Tillage method (set as RT-ST group), and a control group was set up at the same time, the control group was treated with long-term rotary tillage (set as RT group), and all the straw was returned to the field. Wheat is sown from October 10 to 15 each year and harvested from June 8 to 15 the following year; corn is sown from June 18 to 25 and harvested from October 8 to 12 of the year. Unified field management for each treatment, 160kg ha of pure N in the wheat season -1 , P 2 o 5 150kg ha -1 , K 2 O 105kg ha -1 , each treatment was uniformly topdressed with pure N 80kg ha at the jointing stage -1 , wat...

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Abstract

The invention relates to a combined rotational tillage method capable of harvesting high-yield wheat and corn twice and improving the organic carbon content. The combined rotational tillage method capable of harvesting the high-yield wheat and corn twice and improving the organic carbon content comprises the steps that (1) corn straw is crushed and fully returned to a field for subsoiling after summer corn is harvested, and before summer corn is sowed in the next year, the field is covered with wheat straw for returning, the corn can be planted without any tillage; (2) in a next crop rotation period, before winter wheat is sowed and after the summer corn is harvested, the corn straw is crushed and returned to the field, and deep rotary tillage is conducted directly; before the summer corn is sowed in the next year, subsoiling is conducted after the field is covered with the wheat straw for returning; a pattern of the tillage is that subsoiling and rotary tillage are combined in a wheat season, no tillage is in a corn season; in the next year, the rotary tillage is conducted in the wheat season, subsoiling is conducted in the corn season, and the above tillage modes are carried out in turn very other year. The combined rotational tillage method capable of harvesting the high-yield wheat and corn twice and improving the organic carbon content can be completed within two crop rotation cycles (two years), the tillage frequency is reduced, costs are saved, the number of times of disturbance of topsoil is reduced, a good soil aggregate structure is maintained, and meanwhile the organic carbon content in the topsoil of 0-30 cm thick can be significantly increased by 0.36 g / kg; in addition, the yield of wheat and corn is significantly increased.

Description

technical field [0001] The invention relates to a combined rotation cultivation method for high-yield wheat and jade double cropping and increasing organic carbon content, and belongs to the technical field of crop cultivation. Background technique [0002] In agricultural production, rotary tillage has taken a dominant position in my country's major grain-producing areas, especially wheat and jade double-cropping areas, since it was popularized in the 1990s due to its time-saving and labor-saving, easy mixing of straw and soil, and easy planting. , the area of ​​shallow tillage and rotary tillage accounts for more than 64% of the area of ​​mechanical tillage in my country. However, in recent years, under the background of intensive farming, long-term single rotary tillage, shallow tillage, and improper management of straw resources have caused soil compaction, thinning of the plow layer, loss of soil carbon pool, and reduced fertilizer use efficiency. A series of soil healt...

Claims

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Application Information

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IPC IPC(8): A01G1/00
CPCA01G22/00
Inventor 田慎重王瑜张玉凤郭洪海董亮边文范董晓霞
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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