CN102144492B - Method for improving coastal saline soil by using solidago canadensis - Google Patents
Method for improving coastal saline soil by using solidago canadensis Download PDFInfo
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- CN102144492B CN102144492B CN2011100579985A CN201110057998A CN102144492B CN 102144492 B CN102144492 B CN 102144492B CN 2011100579985 A CN2011100579985 A CN 2011100579985A CN 201110057998 A CN201110057998 A CN 201110057998A CN 102144492 B CN102144492 B CN 102144492B
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Abstract
The invention relates to a method for improving coastal saline soil by using solidago canadensis, in particular to a saline soil improvement project for improving the saline soil by using invasive plants, belonging to the technical field of soil improvement. The method comprises the following steps of: marking out a land parcel to be improved; removing a surface soil layer above the ground water level in parallel to form a flat pit; uniformly covering the flat pit with an isolating material to form an isolating layer, and filling soil on the isolating layer for flattening, wherein the isolating material is solidago canadensis, and the isolating layer is made from 1.5-2 m of collected solidago canadensis or dry solidago canadensis branches with nearly equal length; binding the solidago canadensis or dry solidago canadensis branches into bundles with about 40 cm in thickness, spreading the bundles in the pit and compacting the pit; and backfilling the surface soil. The method has the advantage of changing the waste solidago canadensis litters into the valuable for improving coastal saline soil, not only can a great amount of solidago canadensis litters be consumed, but also saline soil can be improved. Through the massive application of the method provided by the invention, the wide spreading of solidago canadensis can be relieved and weakened. The method is simple and convenient to operate, has low cost and is applicable to large-scale popularization and application.
Description
Technical field
Belonging to the soil improvement technical field, exactly relate to salt-affected soil improvement engineering, is about utilizing the method for instruction plant deadwood as underground isolated material improvement beach salty soil.
Background technology
Solidago Canadensis originates in American-European countries, and last century, the seventies was introduced China as flower plant.Because of its powerful fertility with to the damage capability of indigenous plant, make and overflow in the Yangtze River Delta Area in decades.Also there is not effective extinction method at present.Annual autumn and winter season produces a large amount of withered stem branches of goldenrod.Beach salty soil is the main soil types of Deposits in Eastern Coastal China beach; And the east coastal be one of economic most developed area of China; There is distribution big and medium-sized cities such as Shanghai, Tianjin, Yancheng, Ningbo more; Coastal economy technological development zone builds in the ascendant, among corresponding supporting afforestation construction being is also is being designed and constructed.Build the engineering improving technology of needed beach salty soil as afforestation, more than level of ground water, do separation layer, obtained using comparatively widely with vegetable material such as agricultural crop straw or non-biological material such as slag, stone etc.But utilize the deadwood of instruction plant Solidago Canadensis to do isolated material, and obtain improved effect preferably.This does not see the public reported or the mandate that patents at home and abroad as yet.
Summary of the invention
The present invention will implement to become the useless treasured for the improvement beach salty soil of goldenrod litter, the goldenrod litter of not only can dissolving in a large number, and can improve a kind of method that improves beach salty soil with Solidago Canadensis of salinized soil.
The technical scheme that the present invention adopts is:
Method with Solidago Canadensis improvement beach salty soil comprises following steps: mark the improvement plot on the ground at coastal saline-alkali; Confirm the level of ground water height; Above level of ground water, wait level, the parallel topsoil of removing to become flat hole; Flat hole is gone up the even isolated material that covers and is constituted separation layer, and it is smooth on separation layer, to banket, and its scheme is: isolated material is a Solidago Canadensis; Said separation layer is that the 1.5-2m that collects is close to isometric goldenrod or goldenrod deadwood, and what colligation written treaty 40cm was thick ties up, and, transverse direction vertical by tying up is tiled in the hole, compacting; Backfill table soil.
Good effect of the present invention is:
Realized becoming the useless treasured of goldenrod litter into the improvement beach salty soil, the goldenrod litter of not only can dissolving in a large number, and can improve salinized soil; The extensive application of this invention will slow down and weaken spreading unchecked of goldenrod.The present invention is easy and simple to handle, cost is low, is suitable for large application scope.
Description of drawings
Fig. 1, for cross-sectional view of the present invention,
The specific embodiment
Combine accompanying drawing that the present invention is described further at present
A kind of method with Solidago Canadensis improvement beach salty soil comprises following steps: mark the improvement plot on the ground at coastal saline-alkali; Confirm the level of ground water height; Above level of ground water, wait level, the parallel topsoil of removing to become flat hole 1; Flat hole is gone up and is evenly covered isolated material and constitute separation layer 2, and on separation layer, banket, smooth, its formation is: isolated material is a Solidago Canadensis; Said separation layer is that the 1.5-2m that collects is close to isometric goldenrod deadwood, and what colligation written treaty 40cm was thick ties up 4, in, horizontal 6 directions vertical 5 by tying up are tiled in and cheat, and compacting; Backfill table soil 3.
Embodiment 1
1, position experimental field: East Sea sea wall closes in Shanghai City Bai Longgang sewage disposal plant area;
2, the collection of goldenrod: 1-2 month, beach was waste in the East Sea pastes the withered stem of face of land harvesting goldenrod, height 1.5~2.0m with reaping hook on the ground.Tie up with straw rope and to be cylindric, rugosity is about 40cm, transports to experimental field subsequent use;
3, experimental field prepare: area is 20m * 20m, i.e. 400m
2, being divided into two parts of 10m * 20m, the line of demarcation is an east-west direction.North side 100m
2Be the check plot, promptly do not do separation layer and handle southern side 100m
2Be the separation layer trial zone;
4, experimental field separation layer is handled: with digging machine at 400m
2Earth excavation in the scope digs dark 2.0m (more than the level of ground water).Around the earthwork was deposited in, table soil was following, and subsoil is last.The 200m in the separation layer trial zone
2In the scope, the withered stem of goldenrod that tiling is tied up has been spread the back and has been used the bucket compacting, and thickness is about 20cm after the compacting.Backfill is cut the earth then, and backfill is table soil behind the first subsoil in proper order, and the only backfill earthwork in order in the scope of check plot is not simultaneously done separation layer and handled;
5, plant plantation: late March is planted 5 kinds of garden plantses to early April in check plot and trial zone simultaneously.
6, the measured result of the underground separation layer of goldenrod
6.1 quarantine measures reduce soil salt content
Owing to take underground quarantine measures; Soil accumulation of salt in the surface soil phenomenon disappears; The leaching of precipitation and irrigation in addition, the salt content of the above soil body of separation layer descends to some extent, and wherein 0~60cm descends especially remarkable; As July 0-30cm deep soil EC value lay the initial stage (April) than separation layer and descend 33.6%, the 30-60cm degree of depth descends 32.8%.And 60~90cm degree of depth descends and to have only 3%, this explanation after cutting off capillarity and stopping the accumulation of salt in the surface soil, the salinity of preserving in the soil body have 1/3 by top layer, middle level drip washing to lower floor, with the drip washing time lengthening, salt branch of lower floor washes below the separation layer gradually.Meanwhile, do not establish contrast soil body EC value 0~30cm degree of depth decline 1.4%, 30~60cm degree of depth decline 3.5%, 60~90cm degree of depth decline 6.3% of separation layer.Contrast is visible, lays the underground separation layer of goldenrod deadwood, and in 3 months, salt content descends obviously in 0~60cm degree of depth soil body.Can predict, with the drip washing time lengthening, soil body salt content integral body also can significantly descend on the separation layer.
6.2 quarantine measures promote the plant growth
Because the underground separation layer of goldenrod deadwood has reduced the salt content of the soil body on it; Especially the salt content of 0~60cm degree of depth soil layer makes the increments of cassia corymbosa, the rose of Sharon of plantation on it, golden gloomy glossy privet, Chinese rose, 5 kinds of undershrubs of cotton rose obviously greater than the same a collection of plant on the contrast soil body of not establishing separation layer.According to statistics, to by the end of October, in 6 months, the mean height increment of 5 kind of plant is above contrasting 21% from plantation back nursery stock one-tenth growth beginning alive by the end of April, and average paulin directly surpasses contrast 15%.Wherein, the relatively poor high increment of the rose of Sharon of salt tolerance surpasses contrast 28.5%, and paulin directly surpasses contrast 22.5%, and the stronger cotton rose difference of salt tolerance is little, and high increment surpasses contrast 9.2%, and paulin directly surpasses contrast 10.8%.It is thus clear that relatively poor plant growth has more obvious facilitation to the underground separation layer of goldenrod to salt tolerance.
Claims (1)
1. the method with Solidago Canadensis improvement beach salty soil comprises following steps: mark the improvement plot on the ground at coastal saline-alkali; Confirm the level of ground water height; Above level of ground water, wait level, the parallel topsoil of removing to become flat hole (1); Flat hole is gone up and is evenly covered isolated material and constitute separation layer (2), and on separation layer, banket, smooth, it is characterized in that: isolated material is a Solidago Canadensis; Said separation layer is that the 1.5-2m that collects is close to isometric goldenrod deadwood, and colligation written treaty 40cm is thick ties up (4), in vertical by tying up (5), horizontal (6) direction are tiled in and cheat, and compacting; Backfill table soil (3).
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CN2011100579985A CN102144492B (en) | 2011-03-11 | 2011-03-11 | Method for improving coastal saline soil by using solidago canadensis |
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CN2011100579985A CN102144492B (en) | 2011-03-11 | 2011-03-11 | Method for improving coastal saline soil by using solidago canadensis |
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CN102428818B (en) * | 2011-09-23 | 2012-12-05 | 湖南科技大学 | Method for preventing exotic weeds from invading by cultivating ramie |
CN102428819B (en) * | 2011-09-23 | 2012-12-05 | 湖南科技大学 | Method of using vines to control invasion of exotic weeds |
CN109874436B (en) * | 2019-02-26 | 2022-03-11 | 湖南杂交水稻研究中心 | Method for improving saline-alkali soil by utilizing forest litter |
CN110463395A (en) * | 2019-08-21 | 2019-11-19 | 西安建筑科技大学 | A kind of soil of greenbelt modification method suitable for the Northwest city built environment |
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JP2002030285A (en) * | 2000-07-17 | 2002-01-31 | Nikken Sohonsha Corp | Method for recovering soil suffered by salt damage |
CN101164710A (en) * | 2006-10-18 | 2008-04-23 | 张强 | Method for improving saline-alkali soil |
CN101849455B (en) * | 2010-04-06 | 2011-12-28 | 上海市园林科学研究所 | Method for improving coast salty soil by utilizing cotton straw |
CN101884265A (en) * | 2010-07-09 | 2010-11-17 | 山西省农业科学院蔬菜研究所 | Method for improving saline-alkali land by partitioning salt with interlayer |
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Address after: 200232 No. 899, Wu Long Road, Shanghai, Xuhui District Patentee after: SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCIENCE AND PLANNING Address before: 200232 No. 899, Wu Long Road, Shanghai, Xuhui District Patentee before: SHANGHAI LANDSCAPE GARDENING Research Institute |
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