Method of improving soil quality of coastal saline soil by Sesbania cannabina/wheat rotation

Abstract

The invention discloses a method of improving soil quality of coastal saline soil by Sesbania cannabina / wheat rotation, comprising the steps of increasing fertility of a land by cultivating, ridging to seed with Sesbania cannabina, and carrying out drip irrigation in due time; in mid-late September, harvesting Sesbania cannabina, crushing straws, returning all to a field, irrigating with a small quantity of water so that the straws gain tight contact with soil, and generating moisture for 3-5 days; preparing the land, applying fertilizers, ridging to seed wheat, and covering the surface of ridges with a layer of rice hull after seeding; using an integrated water / fertilizer drip irrigation apparatus with aerating and pressurizing functions to irrigate in due time, performing conventional field management until wheat is harvested in next June, returning the straws to the field, applying urea and a straw decomposing agent, plowing the land, leveling the land, directly seeding with Sesbania cannabina, harvesting Sesbania cannabina before burst, and seeding with wheat according to the above steps. The method has the advantages that the salt content of costal saline soil is effectively decreased, soil quality is gradually improved, the organics content and microorganism content in the oil are increased, certain economic benefit is created, and the method is sustainable.

Description

technical field [0001] The invention relates to the field of soil improvement, in particular to a method for improving the soil quality of seaside saline soil by cropping safflower-wheat in rotation. Background technique [0002] The improvement and utilization of saline-alkali land is a complex systematic project. Different effective improvement measures are formed for different types of saline-alkali land. In summary, there are three main measures, namely engineering measures, chemical measures and biological measures. Each measure has its advantages and disadvantages. Some measures have played a certain role in improvement in a short period of time, but they are easy to repeat and cost high. Only a single measure can not achieve good results. Therefore, there is an urgent need for a low-cost, Improvement measures with good sustainability and economic benefits. [0003] Many scholars have carried out relatively in-depth related research in different saline-alkaline areas,...

AI Technical Summary

Problems solved by technology

Each measure has its advantages and disadvantages. Some measures have played a certain role in improvement in a short period of time, but they are easy to repeat and cost high. Only a single measure can not achieve good results. Therefore, there is an urgent need for a low-cost, Improvement measures with good sustainability and economic benefits

[0003] Many scholars have carried out relatively in-depth related research in different saline-alkali areas, and have also formed a lot of results, some of which are aimed at a specific soil type, and some of which are relatively expensive. For example, the invention patent of application number 2017114551287 uses self-made organic fertilizer The method of planting limonium to improve sandy saline-alkali soil; the invention patent of application number 2017111940264 improves the fertility of saline-alkali soil by planting quince, but it is aimed at mild saline-alkali land with a salt content of 0.3%; Invention patents all use large water to soak the fields or irrigate water and drain salt, and use expensive fertilizers, etc., resulting in high water consumption and high cost; the invention patent with application number 2016105854089 is a step-by-step advancement of our team for severely silty coastal saline-alkali land or coastal flats The improvement method has played a certain role in the improvement of heavy saline-alkali land

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