CN101803516A - Method for improving salt resistance of lawn plant by filling soil through adopting waste colloidal particle as salt storing layer - Google Patents
Method for improving salt resistance of lawn plant by filling soil through adopting waste colloidal particle as salt storing layer Download PDFInfo
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Abstract
The invention relates to a method for improving the salt resistance of a lawn plant by filling soil through adopting a waste colloidal particle as a salt storing layer and application of the waste colloidal particle in improving the salt resistance aspect of the lawn plant Festuca arundinacea. Results indicate that the waste colloidal particle can improve the underground biomass and chlorophyll content of the plant to a certain extent; and the addition of the waste colloidal particle obviously improves the activity of superoxide dismutase (SOD) in the set NaCl concentration range. The invention not only can improve the physical characteristics of soil air permeability, soil water potential, and the like but also can improve the elasticity of a lawn substance by adopting the waste colloidal particle as a soil medium and constructing the salt storing layer, and is unmatched with other soil additives; and the waste colloidal particle improves the salt resistance of the Festuca arundinacea.
Description
Technical field
The invention belongs to environmental protection technical field, relate to reasonable, the safe handling method of scrap rubber grain.A kind of scrap rubber grain that adopts of saying so more specifically is to hold the salt deposit filling soil to improve the method and the application of lawn plant saline-alkaline tolerance.
Background technology
The soil salinization has become one of global focus ecological problem, is subjected to extensive concern.In soil salinization control measures, with external source packing materials such as gypsum, organic polymer, discarded object flyash, sand and all kinds of fertilizer, can improve the salt soil structure, quicken salt discharge, reach promotion plant purpose to moisture and Nutrient Absorption and utilization under the salinization soil condition.Zhang Lingyun and Zhao Gengxing studies show that, administration of salt soil remediation material, soil salt content, unit weight, pH value all decrease, the porosity of soil increases, soil available N, P, K content and soil organic matter content improve, proof salt soil repair materials can improve the physicochemical property of beach salty soil, reaches the purpose of soil melioration.In addition, the saline land is dug out high salt loam and is inserted sandy soil, forms " holding salt deposit ", adopts behind the rain or the big flood sowing, also is a kind of common saline and alkali land improvement method---the sand replacement method of digging pit.As seen, seeking suitable soil external source packing material, be used for the solonchak improvement, will be a very significant job.
In most of the cases, salt stress often causes growth retardation and the tissue injury of plant.Suppressing seed germination is to hinder plant in the terraneous major issue of salt marsh.The one of the main reasons that salt suppress to be sprouted is to reduce hydrolase, particularly a-amylase activity, has the researcher to find that the germination rate of horsetail beefwood and growth rate reduce with the increase of Nacl concentration.Salt stress has suppressed the growth of plant tissue and organ, has quickened developmental process, and shortened vegetative growth phase, is in for a long time under the salt stress, and the area of plant leaf blade reduces.May be because salinity has influenced the speed of cell extension or reduced the time that cell extends.
On the other hand, along with increasing of waste old, relevant waste and old rubber particle recycling arouses extensive attention at home and abroad, and can be used as roadbed or construction material is used as the scrap rubber grain; And report as the research of lawn matrix is existing with the scrap rubber grain.The domestic scrap rubber grain filling lawn matrix that utilizes has also been obtained positive progress with the research that improves its physicochemical property and turf quality feature.
Waste and old rubber particle is flexible, and in order to utilize this characteristic, the inventor is engaged in waste and old rubber particle for many years and is used for the lawn, is the research of purpose to improve anti-trample property, and is related to the problem of the safety of waste and old rubber particle.For example, " plant research ", Vol.27 No.2 disclose the research paper of the inventor " waste and old rubber particle is filled lawn root carrying substrates and the ecological response of lawn plant "; " ecological magazine ", 2007,26 (6): 886-891 discloses the research paper of the inventor " waste rubber grain leaching liquor material discharges and seed soaking "; " Acta Ecologica Sinica ", 29 the 4th phases of volume disclosed the inventor and " have trampleed on filled with waste crumb rubber grain matrix lawn perennial ryegrass property material and photosynthetic performance "; " gardening journal ", 2009,36 (2): 233-238 discloses inventor's " lawn matrix filled with waste crumb rubber grain is to the influence of perennial ryegrass biological property before and after trampleing on "; Patent " the application (200710059787) of waste and old rubber particle in the control harmful nematode of lawn matrix soil disclosed; These researchs mainly relate to the influence of waste rubber grain to the anti-trample in lawn, plant growing and Secure Application.Along with deepening continuously of experiment, the inventor further discovers, serve as to press the salt deposit filling soil can improve the turfgrass anti-salt property with the scrap rubber grain, and bibliographical information is not seen in relevant this purpose research as yet.
Summary of the invention
The present invention is filled in the scrap rubber grain in the lawn matrix, make up soil with the scrap rubber grain and " hold salt deposit ", inquire into the rhizosphere regulate and control effect of scrap rubber grain in lawn NaCl coerces, the scrap rubber grain holds the influence of salt deposit to lawn plant growth and physiological characteristic around disclosing following root system, for scrap rubber grain salinization soil planting high-quality lawn provides theoretical foundation.For achieving the above object, the invention provides following technical scheme:
(1) the scrap rubber grain is to hold the salt deposit filling soil to improve the method for lawn plant saline-alkaline tolerance, it is characterized in that, adopt the scrap rubber grain, place the bottom of soil 20-30cm for holding salt deposit, soil formation matrix placed on it is held salt deposit, and wherein the weight ratio of soil and scrap rubber grain is 10: 1;
(2) holding salt deposit matrix upper seeding wheel lawn plant Festuca Arundinacea;
(3) salt stress carries out after sowing 15d is emerged fully, and the mode of coercing is coerced for going forward one by one, and carries out once in promptly per 5 days, and the aqueous solution that at every turn will contain 0.2%-1%NaCl joins and holds in the salt deposit matrix, coerces after 20 days to finish;
(4) coerce finish after, Festuca Arundinacea continue to be cultivated 15d, gets the mensuration that above-ground plant parts carries out every physical signs.
The present invention further discloses the scrap rubber grain is to hold the application of salt deposit filling soil aspect raising lawn plant Festuca Arundinacea salt-resistance, and the weight ratio of the wherein said 0.2%-1%NaCl of containing soil and scrap rubber grain is 10: 1.Festuca Arundinacea salt-resistance of the present invention embodies index and comprises: improve the Festuca Arundinacea chlorophyll content, improve superoxide dismutase activity; Increase mda content and relative conductivity
The present invention has studied the physiological responses feature that the lawn plant Festuca Arundinacea is coerced NaCl by potted plant soil matrix filled with waste crumb rubber grain.The result shows, fills micelle and can improve underground biomass and the chlorophyll content of plant to a certain extent; When NaCl concentration surpasses 0.4%, to compare with contrast, micelle is handled geodyte, underground biomass increases to some extent.Fill micelle in the lawn matrix peroxidase (POD) activity is had no significant effect, but NaCl concentration is higher than at 0.4% o'clock, micelle is handled POD and all is higher than contrast; In set NaCl concentration range, the adding of micelle has obviously increased superoxide dismutase (SOD) activity, and especially under 0.2%NaCl concentration, the contrast of SOD specific activity has improved 161.66%.In addition, micelle can significantly be alleviated NaCl and coerces Festuca Arundinacea blade malonaldehyde (MDA) content that causes and the increase of relative conductivity, and is little to the influence of proline content.As seen, filled with waste crumb rubber grain in lawn matrix can alleviate the injury of salt stress to Festuca Arundinacea, has improved the salt-resistance of Festuca Arundinacea.The more detailed test method of the present invention is as follows:
1 materials and methods
1.1 test material
Scrap rubber grain grain diameter is 0.5～1mm.Lawn plant is selected Festuca Arundinacea (Festuca arundinacea L.) for use.Be taken from 0～20cm topsoil in the Tianjin Normal University campus for examination soil, the soil texture is a dauk, and its character is: pH 7.44, the content of organic matter 4.68%, full nitrogen 0.21%, available phosphorus 22.03mgkg-1, saturation moisture content 0.58mlg
-1
1.2 experimental scheme
The potted plant method of Festuca Arundinacea is adopted in test, selects plastic containers for use.The ratio of soil and micelle is 10: 1; Micelle is placed the container bottom, and soil is placed on it, and micelle is as for 20-30cm under the soil.The seeding quantity of every basin Festuca Arundinacea is 0.5g.The test used salt is coerced reagent for analyzing pure NaCl.
Salt stress carries out after sowing 15d is emerged fully, the mode of coercing is coerced for going forward one by one, be to carry out once in per 5 days, NaCl with 0.4g is dissolved in the water of 20mL at every turn, then this salting liquid is joined in the matrix, coerce after 20 days and finish, make soil salt concentration reach 0,0.2%, 0.4%, 0.6%, 0.8% and 1% totally 6 processing horizontals respectively at last.Each processing is contrast (CK) with the identical salinity that does not contain micelle respectively; Test 4 repetitions.Coerce finish after, lawn plant continue to be cultivated 15d, promptly 50d after planting gets the mensuration that above-ground plant parts carries out every physical signs, comprises chlorophyll, malonaldehyde, proline content, relative conductivity and protective enzyme activity etc.Cultivate 75d again after cradling acrial part, the total cultivation cycle of plant is 125d.The duration of test mean temperature is 18 ℃, and average relative humidity is 37.1%; Illumination is the nature incident light.Between the culture period of lawn, every day quantitative water supply, to guarantee the normal growth of plant, average confluent is 18mL.
1.3 index determining method
The neat matrix of lawn plant is cradled, and root is clean with distilled water flushing, blots plant surface moisture with blotting paper, places the 30min that completes under 105 ℃ of conditions of baking oven, dries to constant weight for 80 ℃, measures the dry weight of its overground part and underground part; Chlorophyll, malonaldehyde and proline content are measured with reference to Zhang Zhiliang and Qu Weijing " plant physiology experiment guidance "; Relative conductivity adopts the conductivity meter method to measure; The active guaiacol method that adopts of POD is measured; Active nitroblue tetrazolium (NBT) photoreduction met hod that adopts of SOD.
1.4 data are handled
Data analysis adopts Microsoft Excel 2003 and SPSS 13.0 to carry out the independent data t check analysis of two samples.
2 development results analyses
2.1 micelle is coerced down the influence of Festuca Arundinacea biomass to NaCl
As seen from Figure 1, Festuca Arundinacea on the ground and underground biomass all coerce the increase of concentration and reduce along with NaCl, NaCl concentration is high more, reduces manyly more, illustrates that NaCl with high concentration coerces the obvious growth that suppresses Festuca Arundinacea, has especially suppressed the growth of root system.Different salinity are coerced down, the adding of micelle has produced active influence to the increase of Festuca Arundinacea biomass, when NaCl coerces concentration when surpassing 0.4%, the ground biomass that micelle is handled all is higher than the contrast that does not add micelle with concentration, but difference not significantly (Fig. 1-1) between the two.And for underground biomass, in salinity is coerced scope, all show the micelle processing and be higher than contrast, promptly 0%, 0.2%, 0.4%, 0.6%, 0.8% and 1%NaCl concentration under, it is respectively 126.49%, 112.98%, 114.72% of contrast, 105.18%, 109.16% and 128.92%.As seen, adding micelle in the lawn matrix can alleviate NaCl and coerce influence (Fig. 1, P＞0.05) to the Festuca Arundinacea biomass.Wherein Fig. 1-1 coerces down the influence (g/ ware) of Festuca Arundinacea the upperground part biomass to NaCl for micelle; Fig. 1-2 coerces down the influence (g/ ware) of Festuca Arundinacea underground part biomass to NaCl for micelle.
2.2 micelle is coerced down the influence of Festuca Arundinacea chlorophyll content to NaCl
As can be seen from Table 1, when NaCl concentration is lower than 0.6%, chlorophyll content is coerced the increase of concentration along with NaCl and is reduced, but ascendant trend appears again when salinity is higher than 0.6%, this may be an overground part growth retardation under high salt concn, blade dwindles, the result that chlorophyll concentrates in blade.Add after the micelle in the matrix, chlorophyll content obviously increases, and under 0.2% salinity, micelle is handled chlorophyll content and reached maximum 0.9mgg
-1And contrast difference extremely significantly (P＜0.01); Coerce down chlorophyll content significant difference (P＜0.05) between micelle is handled and contrasted in 0.4% and 1% salinity.As seen, add micelle in the lawn matrix and can alleviate NaCl and coerce influence, improved the photosynthetic capacity of plant the Festuca Arundinacea chlorophyll content.
Table 1 micelle is coerced down the influence (mgg of Festuca Arundinacea chlorophyll content to NaCl
-1FW)
2.3 micelle is coerced down the influence of Festuca Arundinacea protective enzyme activity to NaCl
Salt and micelle are handled and have obviously been changed Festuca Arundinacea blade POD and SOD activity.Coerce down at NaCl, POD shows as to reduce earlier and afterwards raises; When salinity surpassed 0.4%, micelle is handled had increased the POD activity, but with contrast differences not significantly (Fig. 2).Different with the Changing Pattern of POD activity, the SOD activity is coerced total down trend for raising earlier at NaCl, slowly descends then.Micelle has significantly increased the SOD activity, under 0%, 0.2%, 0.4%, 0.6%, 0.8% and 1% salinity, the SOD activity is compared respectively according to having increased by 28.05%, 161.66%, 49.11%, 42.14%, 35.91% and 16.29%, amplification maximum under 0.2% salinity is with contrast differences extremely significantly (P＜0.01); Under 0.4%, 0.6% and 0.8% salinity, micelle is handled and contrast differences remarkable (Fig. 3, P＜0.05).
2.4 micelle is coerced down the influence of Festuca Arundinacea MDA, proline and relative conductivity to NaCl
As can be seen from Table 2, coerce under the concentration at all NaCl, add micelle in the matrix and all reduced MDA content, wherein under 0.4%, 0.6% and 1% salinity, micelle is handled comparison respectively according to having reduced by 14.97%, 23.25% and 26.38%, difference reaches extremely significantly (P＜0.01), and the increase that NaCl coerces down MDA content has effectively been alleviated in adding that micelle is described, and is the most remarkable in high salt concentration (1%) mitigation.
Table 2 micelle is to the influence of Festuca Arundinacea malonaldehyde, proline and relative conductivity under the NaCl
Proline is the important substance that plant is replied the salt stress reaction.Studies show that behind the adding micelle, under 0.4% and 0.6% salinity, proline significantly increases in the matrix, compares with contrast, 0.4% concentration allowance below nominal size heteropole is (P＜0.01) significantly, and 0.6% concentration difference is (table 2, P＜0.05) significantly.
Discover that the control group relative conductivity is along with the increase of salinity presents increase trend substantially, performance especially under high salt concn is the most obvious, illustrates that the degree of cytoplasma membrane damaged increases the weight of.After in matrix, adding micelle, relative conductivity decreases, and especially comparatively obvious in middle low concentration performance, comparison is according to having reduced by 39.05% under 0.6% concentration, reach significance level (P＜0.05), micelle can be alleviated the damage (table 2) of the cytoplasma membrane that causes because of salt stress.
3, development conclusion
The dysplasia of solonchak, permeability is poor, and a large amount of soluble-salts has reduced the flow of water of soil.Zhang Lingyuns etc. can increase the flow of water of soil by adopting salt soil repair materials, improve the structure and the air capacity of soils of soil, help nutrient absorbing and conversion.2004, Wang Yanmei proposed to place in the solonchak every salt deposit, as sandstone, lime-ash etc., and adopted the method for passenger's soil simultaneously, and can reduce salt like this and divide the accumulation of salt in the surface soil amount of evaporation by soil capillary water, be the condition that plant is created the soil salt desalination.As seen, for the improvement of solonchak, suitable method and repair materials be arranged.Therefore, the present invention selects for use the scrap rubber grain to hold salt deposit as soil media and structure, not only can improve physical characteristics such as soil aeration and soil water potential, also can increase lawn matrix elasticity, is that other soil additive is incomparable.
Among the present invention, the salt stress of high concentration has obviously suppressed the growth of Festuca Arundinacea, especially suppressed the growth of root system, this research with Tang Qiaoxiang etc. is consistent, Storey etc. think that it is because salt stress has increased the suberinisation of root system lower epidermis that salt stress suppresses growth and development of plants, thereby suppress the absorption to moisture and inorganic ions.Add micelle in matrix after, underground biomass all is higher than contrast, may be that micelle has played the effect of holding salt deposit, has limited salinity and has entered from upper layer of soil in the plant corpus, alleviates the injury that salt stress brings plant.Under salt stress, plant absorbing causes malnutrition less than enough moisture and mineral nutrition, causes chlorophyll content to reduce, and result of the present invention has also confirmed this point, and the Festuca Arundinacea chlorophyll content reduces along with the rising of salinity.After adding micelle in the matrix, chlorophyll content is apparently higher than contrast, alleviated the reduction of the chlorophyll content that salt stress causes, and improves the photosynthetic capacity of plant under the salt stress.In the antioxidase system, protective enzymes such as SOD, POD are the key enzymes of removing active oxygen, and the injury of environment stress is often slowed down or resist to plant by the activity that improves SOD and POD.Liang Huimin etc. discover that with the increase of salt stress concentration, turfgrass SOD enzymic activity improves rapidly, is issued to maximum in the moderate salinity, and afterwards, with the increase of salinity, the SOD enzymic activity begins again to descend.The present invention draws similar result, and under the salt stress, Festuca Arundinacea blade POD activity shows as to reduce afterwards earlier and raises, and the active overall variation tendency of SOD decreases after raising earlier a little.Significantly increased and respectively coerced SOD activity under the concentration and add micelle in the matrix, thereby protection cell membrane complete play a part positive.MDA is the important indicator of reflection cell membrane lipid peroxidation power and plasma membrane destructiveness as the product of lipid peroxidation; Salinity can increase cell leakage, strengthens lipid peroxidation, the destruction that finally causes the film system, thus suppress growth.The result of study of this research and Liu Yanji etc. is similar, and salinity is high more, and the increase of MDA content is remarkable more, and the injury that cell membrane is subjected to is serious more.But the adding of micelle obviously descends MDA content, can alleviate the film fat peroxidating that salt stress brings.
Under condition of salt stress, cytoplasma membrane at first is subjected to salt ion and coerces influence and produce strain, causes plasma membrane injured, and the most tangible performance of plasma membrane strain is that membrane permeability increases; The big I of electrical conductivity directly reflects the degree that cell membrane is hurt, and salt can destroy the plant cell membrane structure and make and organize relative conductivity to increase.In matrix, add micelle, can suppress the increase of the Festuca Arundinacea relative conductivity of Salt Stress-induced.
Description of drawings:
Fig. 1-1 coerces down the influence (g/ ware) of Festuca Arundinacea the upperground part biomass to NaCl for micelle;
Fig. 1-2 coerces down the influence (g/ ware) of Festuca Arundinacea underground part biomass to NaCl for micelle;
Fig. 2 coerces down the influence of Festuca Arundinacea POD activity to NaCl for micelle;
Fig. 3 coerces down the influence of Festuca Arundinacea SOD activity to NaCl for micelle.
Embodiment
In order to explain enforcement of the present invention more fully, provide following preparation method's embodiment.These embodiments only are to explain rather than limit the scope of the invention.
(1) adopting the potted plant method of Festuca Arundinacea, is that the scrap rubber grain of 0.5mm is placed on container 20cm bottom for holding salt with diameter, and soil formation matrix placed on it is held salt deposit, and wherein the ratio of soil and micelle is 10: 1, and the seeding quantity of every basin Festuca Arundinacea is 0.5g;
(2) salt stress carries out after sowing 15d is emerged fully, and the mode of coercing is coerced for going forward one by one, and carries out once in promptly per 5 days, and the aqueous solution that at every turn will contain 0.2%NaCl joins and holds in the salt deposit matrix, coerces after 20 days to finish;
(3) coerce finish after, Festuca Arundinacea continue to be cultivated 15d, gets the mensuration that above-ground plant parts carries out every physical signs; Wherein the duration of test mean temperature is 18 ℃, and average relative humidity is 37.1%; Illumination is the nature incident light; Between the culture period of lawn, every day quantitative water supply, to guarantee the normal growth of plant.
(4) coerce finish after, Festuca Arundinacea continue to be cultivated 15d, gets the mensuration that above-ground plant parts carries out every physical signs.
Embodiment 2
(1) adopting the potted plant method of Festuca Arundinacea, is that the scrap rubber grain of 1mm is placed on container 30cm bottom for holding salt with diameter, soil formation matrix placed on it, and wherein the ratio of soil and micelle is 10: 1, the seeding quantity of every basin Festuca Arundinacea is 0.5g;
(2) salt stress carries out after sowing 15d is emerged fully, and the mode of coercing is coerced for going forward one by one, and carries out once in promptly per 5 days, and the aqueous solution that at every turn will contain 0.4%NaCl joins and holds in the salt deposit matrix, coerces after 20 days to finish;
(3) coerce finish after, Festuca Arundinacea continue to be cultivated 15d, gets the mensuration that above-ground plant parts carries out every physical signs; Wherein the duration of test mean temperature is 18 ℃, and average relative humidity is 37.1%; Illumination is the nature incident light; Between the culture period of lawn, every day quantitative water supply, to guarantee the normal growth of plant.
Embodiment 3
(1) adopting the potted plant method of Festuca Arundinacea, is that the scrap rubber grain of 0.8mm is placed on container 30cm bottom for holding salt with diameter, soil formation matrix placed on it, and wherein the ratio of soil and micelle is 10: 1, the seeding quantity of every basin Festuca Arundinacea is 0.5g;
(2) salt stress carries out after sowing 15d is emerged fully, and the mode of coercing is coerced for going forward one by one, and carries out once in promptly per 5 days, and the aqueous solution that at every turn will contain 0.8%NaCl joins and holds in the salt deposit matrix, coerces after 20 days to finish;
(3) coerce finish after, Festuca Arundinacea continue to be cultivated 15d, gets the mensuration that above-ground plant parts carries out every physical signs; Wherein the duration of test mean temperature is 18 ℃, and average relative humidity is 37.1%; Illumination is the nature incident light; Between the culture period of lawn, every day quantitative water supply, to guarantee the normal growth of plant.
Embodiment 4
(1) adopting the potted plant method of Festuca Arundinacea, is that the scrap rubber grain of 1mm is placed on container 30cm bottom for holding salt with diameter, soil formation matrix placed on it, and wherein the ratio of soil and micelle is 10: 1, the seeding quantity of every basin Festuca Arundinacea is 0.5g;
(2) salt stress carries out after sowing 15d is emerged fully, and the mode of coercing is coerced for going forward one by one, and carries out once in promptly per 5 days, and the aqueous solution that at every turn will contain 0.5%NaCl joins and holds in the salt deposit matrix, coerces after 20 days to finish;
(3) coerce finish after, Festuca Arundinacea continue to be cultivated 15d, gets the mensuration that above-ground plant parts carries out every physical signs; Wherein the duration of test mean temperature is 18 ℃, and average relative humidity is 37.1%; Illumination is the nature incident light; Between the culture period of lawn, every day quantitative water supply, to guarantee the normal growth of plant.
In a word, make up lawn in saline-alkali soil matrix rhizosphere salinity accumulating layer with the scrap rubber grain, salinity actual in the soil is decreased, having limited salinity enters in the plant corpus from soil, make root system can absorb moisture better, to the oxidative damage that effective alleviation salt adverse circumstance causes, it is significant to improve the Festuca Arundinacea salt-resistance.
Scrap rubber grain disclosed by the invention improves the method for turfgrass anti-salt property for pressing the salt deposit filling soil, and those skilled in the art can be by using for reference this paper content, and links such as appropriate change raw material, technological parameter realize.Method of the present invention is described by preferred embodiment, and person skilled obviously can be changed or suitably change and combination method as herein described in not breaking away from content of the present invention, spirit and scope, realizes the technology of the present invention.Special needs to be pointed out is, the replacement that all are similar and change apparent to those skilled in the artly, they are regarded as being included in spirit of the present invention, scope and the content.
Claims (3)
1. a scrap rubber grain is to hold the salt deposit filling soil to improve the method for lawn plant saline-alkaline tolerance, it is characterized in that
(1) adopt the scrap rubber grain for holding salt deposit, place the bottom of soil 20-30cm, soil formation matrix placed on it is held salt deposit, and wherein the weight ratio of soil and scrap rubber grain is 10: 1;
(2) holding salt deposit matrix upper seeding wheel lawn plant Festuca Arundinacea;
(3) salt stress carries out after sowing 15d is emerged fully, and the mode of coercing is coerced for going forward one by one, and carries out once in promptly per 5 days, and the aqueous solution that at every turn will contain 0.2%NaCl joins and holds in the salt deposit matrix, coerces after 20 days to finish;
(4) coerce finish after, Festuca Arundinacea continue to be cultivated 15d, gets the mensuration that above-ground plant parts carries out every physical signs.
(5) the scrap rubber grain can make the growth down of lawn plant tolerance 0.2%-1%NaCl salinity for holding salt deposit;
2. the scrap rubber grain is to hold the application of salt deposit filling soil aspect raising lawn plant Festuca Arundinacea salt-resistance, and the weight ratio of the wherein said 0.2%-1%NaCl of containing soil and scrap rubber grain is 10: 1.
3. the described application of claim 2, wherein said Festuca Arundinacea salt-resistance embody index and comprise: improve the Festuca Arundinacea chlorophyll content, improve superoxide dismutase activity; Increase mda content and relative conductivity.
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| CN103283442A (en) * | 2013-05-15 | 2013-09-11 | 天津师范大学 | Method for adjusting malondialdehyde and membrane permeability of lawn plants through dried sludge |
| CN103283442B (en) * | 2013-05-15 | 2014-10-15 | 天津师范大学 | Method for adjusting malondialdehyde and membrane permeability of lawn plants through dried sludge |
| CN105900707A (en) * | 2016-04-27 | 2016-08-31 | 黑龙江省科学院大庆分院 | Screening method for saline and alkaline resistance of kok-saghyz |
| CN110835537A (en) * | 2019-11-11 | 2020-02-25 | 山东省农业科学院农业资源与环境研究所 | Persistent coastal saline soil improvement salt absorbent, and preparation method and application thereof |
| CN110835537B (en) * | 2019-11-11 | 2021-07-23 | 山东省农业科学院农业资源与环境研究所 | Persistent coastal saline soil improvement salt absorbent, and preparation method and application thereof |
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| CN101803516B (en) | 2011-06-15 |
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