Method for biologically improving hardened and salinized soil through intercropping and interplanting of sainfoin and four-wing saltbush
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A technology for quatrefoil and red bean grass, which is applied in the field of soil remediation and can solve problems affecting the emergence of crops
Active Publication Date: 2015-09-09
GANSU AGRI UNIV
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[0004] The present invention aims at the problems of hardened and salinized soil that the soil is hard to infiltrate and the high salt content of the soil affects the em
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Embodiment 1
[0021] A method for interplanting biological improvement of hardened salinized soil by interplanting red bean grass and amaranthus, comprising the following steps:
[0022] 1) Pretreatment of seeds of red bean grass and quinoa:
[0023] Weigh a certain weight of red bean grass seeds, soak them with 25wt% hydrogen peroxide for 15 minutes, remove and dry them in the shade for later use; weigh another certain weight of Atrigalus chinensis seeds, soak them with 0.5wt% potassium dihydrogen phosphate solution for 20 hours, remove them and dry them in the air spare;
[0024] 2) Preparation of seedbed for planting:
[0025] Before sowing, dig a 30cm-deep ditch every 120cm on the hardened salinized soil plot, the ditch width is about 30cm, and spread a layer of about 5cm (generally controlled at 4-6cm thickness) thick in the ditch. Jade straw debris (the length of the debris is about 5cm, and it can also be replaced by other plant straws such as wheat straw, cumin straw, anise straw,...
Embodiment 2
[0029] A method for interplanting biological improvement of hardened salinized soil by interplanting red bean grass and amaranthus, comprising the following steps:
[0030] 1) Pretreatment of seeds of red bean grass and quinoa:
[0031] Weigh a certain weight of red bean grass seeds, soak them with 25wt% hydrogen peroxide for 10 minutes, remove them and dry them in the shade for later use; weigh another certain weight of Atrigalus chinensis seeds, soak them with 0.5wt% potassium dihydrogen phosphate solution for 12 hours, remove them and dry them in the air spare;
[0032] 2) Preparation of seedbed for planting:
[0033] Before sowing, dig a 30cm-deep ditch every 100cm on the compacted salinized soil plot, the ditch width is 30cm, and spread a layer of about 5cm (generally 4-6cm thick) thick jade into the ditch Straw debris (the length of the debris is about 5cm, and it can also be replaced by other plant straws such as wheat straw), and then fill with a layer of raked backf...
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Abstract
The invention discloses a method for biologically improving hardened and salinized soil through intercropping and interplanting of sainfoin and four-wing saltbush. The method comprises the following steps of step 1, enabling sainfoin seeds to be soaked in hydrogen peroxide for 5 to 15 minutes and enabling four-wing saltbush seeds to be soaked in a monopotassium phosphate solution for 12 to 24 hours; step 2, ditching every 80 to 120 cm on the hardened and salinized soil land, broadcasting a layer of straw scraps, filling a layer of rake thickness of backfill soil, broadcasting a layer of organic fertilizer, backfilling rest of the rake thickness of backfill soil to form ridges and performing film coating on the ridges for 7 to 10 days, wherein the width of every ditch is 30 cm; step 3, dividing every ridge into two rows to sow, wherein the sainfoin is sown on one row and the four-wing saltbush is sown on the other row. According to the method for biologically improving the hardened and salinized soil through the intercropping and interplanting of the sainfoin and the four-wing saltbush, the hardened and salinized soil can be improved within 1 to 2 years, the complete infiltration can be achieved 1 to 2 days after flood irrigation, the surface is free of obvious water accumulation layer, and the desalination rate of the soil reaches 4.8 to 16.7%.
Description
technical field [0001] The invention belongs to the field of soil remediation, and in particular relates to a method for improving compacted salinized soil by using intercropping organisms such as red bean grass and atripinus quaternaria intercropping. Background technique [0002] The Jiudianxia immigration area is located at the west end of the Hexi Corridor in Gansu Province, in the middle and lower reaches of the Shule River. The inventor investigated the resettlement area in 2008. There are two main problems in the resettlement project area: first, the 37,600 mu of cultivated land was originally a wind-eroded landform area or hardened land, with poor soil fertility and serious salinization, which seriously affected the growth of crops . Second, about 100,000 mu of farmland in the resettlement area has the problem of infiltration of irrigation water, which has seriously affected the production and life of the resettlers, and even social stability. According to field in...
Claims
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