CN104584753A - Method for improving saline and alkaline land by glycyrrhiza uralensis nodule bacteria - Google Patents
Method for improving saline and alkaline land by glycyrrhiza uralensis nodule bacteria Download PDFInfo
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- CN104584753A CN104584753A CN201510017889.9A CN201510017889A CN104584753A CN 104584753 A CN104584753 A CN 104584753A CN 201510017889 A CN201510017889 A CN 201510017889A CN 104584753 A CN104584753 A CN 104584753A
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Abstract
The invention discloses a method for improving saline and alkaline land by glycyrrhiza uralensis nodule bacteria. The method comprises the following steps: optimally selecting a medium-slight saline and alkaline land with an average annular rainfall of below 500mm and a content of less than 0.7 percent in an optimal glycyrrhiza uralensis cultivation area, selecting a plot which has sandy loam with deep and thick soil layer of above 1m, and is excellent in ventilation and flat in terrain, and transplanting annular glycyrrhiza uralensis seedlings in spring; performing first-time shearing in a glycyrrhiza uralensis growth peak period, wherein 1/4 of the height part of the plant is sheared; and performing second-time shearing in a leaf fall period, wherein 1/2 of the height part of the plant is sheared. According to the method, the saline and alkaline land is improved by using a nitrogen fixation function of nodule bacteria generated by the glycyrrhiza uralensis as one leguminosae Chinese medicinal herb, and meanwhile, a phosphatic fertilizer is singly applied to facilitate development of root nodules and increase of the nodule bacteria, so that the nitrogen fixing capacity of the glycyrrhiza uralensis can be enhanced.
Description
Technical field
The invention belongs to agriculture field, be specifically related to the method for Radix Glycyrrhizae cultivation on saline land.
Background technology
Radix Glycyrrhizae (
glycyrrhiza uralensis) be pulse family glycyrrhiza genus, its acrial part is often in association shape, and underground root welding technology is flourishing, has the good characteristics such as cold-resistant, heat-resisting, Salt And Alkali Tolerance, can check winds and fix drifting sand, conserve water and soil, and is the important raw economic plant resources of sand in arid, semiarid zone.Radix Glycyrrhizae is again one of the most frequently used traditional Chinese medicine simultaneously, has the title of " ten side nine grass ".The root welding technology of Radix Glycyrrhizae, has clearing heat and detoxicating, cough-relieving apophlegmatic, tonifying spleen and the effect such as stomach, coordinating the drug actions of a prescription.Along with deepening continuously of developing Radix Glycyrrhizae, Radix Glycyrrhizae is had a sudden rise in social status, and licorice medicinal materials mainly relies on wild resource for many years, owing to excavating the uncontrolled of Radix Glycyrrhizae, makes China's Licorice suffer heavy damage.Although Artificial Cultivation Glycyrrhiza uralensis is extensively promoted at home, but still the market demand day by day increased severely can not be met.
Current, the salinization of soil has become one of important environmental problem.Constantly increase at population; when arable land is reduced gradually; modified utilization saline land is significant, has extremely important realistic meaning for China especially inland dry agricuture irrigated area rural economy sustainable and healthy development, management of national land, ecological environmental protection etc.
The common Radix Glycyrrhizae cultivation phase is 2-3, can gather in the crops Radix Glycyrrhizae dried food and nuts 3500kg/hm
2but the licorice that common cultivation method obtains is sour, liquiritin content is lower, the content requirement of 2.0%, 1.0% of Chinese Pharmacopoeia regulation can not be met, thus have impact on Radix Glycyrrhizae quality and market sale.
Summary of the invention
The object of this invention is to provide the method in a kind of Radix Glycyrrhizae rhizobium improvement saline land.
Technical scheme of the present invention is as follows: a kind of method of Radix Glycyrrhizae rhizobium improvement saline land, comprises the steps:
A. transplant: select annual Radix Glycyrrhizae seedling to carry out transplanting in spring, apply nitrogenous fertilizer, phosphate fertilizer simultaneously; Radix Glycyrrhizae shoot root head will be imbedded 3-5cm under soil layer during transplanting, root afterbody keeps flat along ditch, does not bend;
B. seedling is cut: Radix Glycyrrhizae vigorous period carries out first time and cuts seedling, cuts off 1/4 of plant height; Leaf fall period carries out second time and cuts seedling, cuts off 1/2 of plant height.
Preferably, in described steps A, the fertilizing amount of nitrogenous fertilizer is 75-150kgN/hm
2, the fertilizing amount of phosphate fertilizer is 120-240 kgP
2o
5/ hm
2.
Preferably, the fertilizing amount of described nitrogenous fertilizer is 75kgN/hm
2, the fertilizing amount of phosphate fertilizer is 240 kgP
2o
5/ hm
2.
Preferably, the cultivation selection of land of described steps A transplanting Radix Glycyrrhizae selects average annual below rainfall 500mm, the saline and alkaline sandy loam of mild or moderate that content is less than 0.7%, more than soil thickness 1m, ventilation is good, physical features is smooth, the environmental condition of frost-free season more than 110d, more than sunshine duration 1350h.
Preferably, planting density is the disposable field planting 22.5 of saline land Radix Glycyrrhizae ten thousand strains/hm
2.
Preferably, Radix Glycyrrhizae seedling be 35 degree-45 along the furrow wall held successfully in transplanting and spends inclination and a good luck direction is put, strain spacing 10-15cm, line space 30cm by described steps A.
Preferably, Radix Glycyrrhizae seedling be selected from Glycyrrhiza Uralensis (
glycyrrhiza uralensis), glycyrrhiza inflate bat (
g. inflata) or glycyrrhiza glabra (
g. glabra).
Preferably, Radix Glycyrrhizae seedling be selected from Glycyrrhiza Uralensis (
glycyrrhiza uralensis).
Radix Glycyrrhizae is cultivated on the mild or moderate saline land below 0.7% by the inventive method, applied fertilizer by varying level N, P and cut seedling process in various degree, in 3 years, raw cauline leaf growth cut off 1/4 of plant height mid-term, be beneficial to the compensatory growth of Radix Glycyrrhizae under ground portion and the raising of active constituent content, while raising cauline leaf feeding value, improve the marketing quality of Radix Glycyrrhizae.Nitrogen, phosphate fertilizer use the Yield and qualities affecting Radix Glycyrrhizae, the nitrogenous fertilizer of reduced levels and phosphate fertilizer compounding application, be conducive to the growth of haulm of liquorice and root system, and effectively can improve output and the active constituent content of Radix Glycyrrhizae.
Singly execute the phosphate fertilizer of higher level, have obvious facilitation to the growth of root system; Singly execute generation and root nodule increase heavily that phosphate fertilizer is conducive to root nodule; Nitrogenous fertilizer (the 75kgN/hm of reduced levels
2), or itself and phosphate fertilizer compounding application are to the accumulation of the accumulation of Radix Glycyrrhizae amount of dry matter, root growth and active ingredient, have obvious facilitation, and Fertilizers are more effective than what singly execute.
Radix Glycyrrhizae is cultivated on saline land by the present invention, Radix Glycyrrhizae rhizobium are utilized to improve saline land, higher Radix Glycyrrhizae output and higher active ingredient is obtained by field management, large area waste land is not only made to be utilized, also can obtain considerable economic benefit, because the growth of Glycyrrhiza uralensis phase is long, full growing season green covers not only can environmental protect, but also can lowering of watertable, change microclimate, surface evaporation is changed into plant transpiration, prevent salt submeter from gathering, the rhizobium that Radix Glycyrrhizae root system produces simultaneously progressively can improve soil, thus produce long-range and huge ecological benefits.
This inventive method carries out saline land Radix Glycyrrhizae cultivation, desirable following benefit: the Radix Glycyrrhizae output of cultivation can reach 3500kg/hm
2, glycyrrhizic acid content reaches 2.1%, meets the requirement of more than 2% of Chinese Pharmacopoeia regulation.Radix Glycyrrhizae is planted in saline land, utilize saline land with the characteristic of halophytes, can adjust agriculture production structure, cultivate specialty industries saline land, the rhizobium that simultaneously Radix Glycyrrhizae root system can be utilized to produce improve soil, culture fertility.
Embodiment
Average annual below the rainfall 500mm of Radix Glycyrrhizae cultural area prioritizing selection that the present invention is suitable for, is less than the mild or moderate saline land of 0.7%, more than soil thickness 1m, and ventilation is good, physical features is smooth, the environmental condition of frost-free season more than 110d, more than sunshine duration 1350h.Comprise the provinces such as the Gansu in NORTHWEST CHINA area, Xinjiang, Ningxia and West Inner Mongolia.As long as other area rainfalls are at below 800mm, the moderate saline-alkali soil region being less than 1.0% also can adopt cultivation method of the present invention to carry out Radix Glycyrrhizae cultivation.
The cultivation of embodiment 1. Glycyrrhiza Uralensis, comprises the steps:
A. transplant: select annual Radix Glycyrrhizae seedling to carry out transplanting in spring, Radix Glycyrrhizae seedling be 40 degree of inclinations and a good luck direction is put along the furrow wall held successfully, Radix Glycyrrhizae shoot root head is imbedded 4cm under soil layer, and root afterbody keeps flat along ditch, does not bend; Strain spacing 12cm, line space 30cm.Apply nitrogenous fertilizer, phosphate fertilizer simultaneously; Planting density is the disposable field planting 22.5 of saline land Radix Glycyrrhizae ten thousand strains/hm
2.The fertilizing amount of nitrogenous fertilizer is 75kgN/hm
2, the fertilizing amount of phosphate fertilizer is 240 kgP
2o
5/ hm
2.
B. seedling is cut: Radix Glycyrrhizae vigorous period carries out first time and cuts seedling, cuts off 1/4 of plant height; Leaf fall period carries out second time and cuts seedling, cuts off 1/2 of plant height.
When soil moisture content is suitable for, shallow hoe once, with anti-compaction; After transplanting terminates, harrow a kind of farm tools with facility, suppression of soil, the root tribal chief work ftercompction earthing exposed individually.This method is applicable to large area and transplants.After cultivation 2-3, usually excavate about October, excavate root and subterranean stem, removing fibrous root and silt, the root dug out and subterranean stem are tied, natural seasoning.
The cultivation of embodiment 2. Glycyrrhiza Uralensis, comprises the steps:
A. transplant: select annual Radix Glycyrrhizae seedling to carry out transplanting in spring, Radix Glycyrrhizae seedling be 45 degree of inclinations and a good luck direction is put along the furrow wall held successfully, Radix Glycyrrhizae shoot root head is imbedded 5cm under soil layer, and root afterbody keeps flat along ditch, does not bend; Strain spacing 15cm, line space 30cm.Apply nitrogenous fertilizer, phosphate fertilizer simultaneously; Planting density is the disposable field planting 22.5 of saline land Radix Glycyrrhizae ten thousand strains/hm
2.The fertilizing amount of nitrogenous fertilizer is 150kgN/hm
2, the fertilizing amount of phosphate fertilizer is 240 kgP
2o
5/ hm
2.
B. seedling is cut: Radix Glycyrrhizae vigorous period carries out first time and cuts seedling, cuts off 1/4 of plant height; Leaf fall period carries out second time and cuts seedling, cuts off 1/2 of plant height.
The cultivation of embodiment 3. Glycyrrhiza Uralensis, comprises the steps:
A. transplant: select annual Radix Glycyrrhizae seedling to carry out transplanting in spring, Radix Glycyrrhizae seedling be 35 degree of inclinations and a good luck direction is put along the furrow wall held successfully, Radix Glycyrrhizae shoot root head is imbedded 3cm under soil layer, and root afterbody keeps flat along ditch, does not bend; Strain spacing 10cm, line space 30cm.Apply nitrogenous fertilizer, phosphate fertilizer simultaneously; Planting density is the disposable field planting 22.5 of saline land Radix Glycyrrhizae ten thousand strains/hm
2.The fertilizing amount of nitrogenous fertilizer is 100kgN/hm
2, the fertilizing amount of phosphate fertilizer is 180 kgP
2o
5/ hm
2.
B. seedling is cut: Radix Glycyrrhizae vigorous period carries out first time and cuts seedling, cuts off 1/4 of plant height; Leaf fall period carries out second time and cuts seedling, cuts off 1/2 of plant height.
Embodiment 4. cultivate object glycyrrhiza inflate bat (
g. inflata), method is with embodiment 1.
Embodiment 5. cultivate object glycyrrhiza glabra (
g. glabra), method is with embodiment 1.
Evaluate and analyse by varying level N, P fertilising below and cut seedling process in various degree, studying Radix Glycyrrhizae output and the impact of quality and the impact on Radix Glycyrrhizae dross proterties.
The present invention carries out Radix Glycyrrhizae and cuts seedling, can obviously reduce Radix Glycyrrhizae plant height and the number of blade, and cauline leaf growth cuts off 1/4 cauline leaf of plant height mid-term, effectively can increase the fresh dry weight of residue cauline leaf, confirm that blade is the photosynthetic organs with certain compensating effect.Haulm of liquorice has certain regeneration capacity after cutting seedling, and effectively can accelerate the growth remaining cauline leaf, is conducive to the accumulation of dry matter.
The accumulation cutting off 1/2 pair of Aboveground Biomass of Young of plant height mid-term in cauline leaf growth serves contour compensation growth, and cuts the accumulation of seedling to Aboveground Biomass of Young slow vegetative period at cauline leaf and serve super compensate effect.
Therefore, cut by suitable the growth that seedling promotes residue cauline leaf, improve the value of cauline leaf part as feed.Cauline leaf once cuts seedling to licorice number slow vegetative period, and the stem number that grows wild is impact not, cuts seedling is long on licorice, root is thick impact also and not obvious simultaneously.
The cauline leaf cut seedling slow vegetative period and cut off plant height 1/2 in cauline leaf fast growing period at cauline leaf all without impact, illustrates that suitable sheared-off part cauline leaf has certain contour compensation effect to root dry-matter accumulation on the dry weight of licorice.Cut the compensating effect that seedling produces the growth of Radix Glycyrrhizae root each index different, but total trend cuts seedling slow vegetative period at cauline leaf to reach contour compensation growth to the external form index of licorice and dry-matter accumulation.To carry out cutting at 3 years raw haulm of liquorices the accumulation that seedling is conducive to glycyrrhizic acid and liquiritin content slow vegetative period, while raising cauline leaf feeding value, also improve the quality requirements of Radix Glycyrrhizae.
Nitrogen, phosphate fertilizer use the Yield and qualities affecting Radix Glycyrrhizae.The nitrogenous fertilizer of reduced levels and phosphate fertilizer compounding application, be conducive to the growth of haulm of liquorice and root system, and effectively can improve output and the active constituent content of Radix Glycyrrhizae.
Nitrogen, phosphate fertilizer are the necessary macroelement of growth and development of plants, and appropriate nitrogen phosphorus fertilizer is supplied with and is beneficial to the ground of plant and the growth of under ground portion.In each stage of growth and development of plants, because the metabolic process of plant itself constantly changes, the demand rule absorbed fertilizer is also corresponding to change.
Different nitrogen, the impact of phosphate fertilizer on each index of Radix Glycyrrhizae are different.Singly execute the phosphate fertilizer of higher level in the present invention, have obvious facilitation to the growth of haulm of liquorice, each index of root system, singly execute generation and root nodule increase heavily that phosphate fertilizer is conducive to root nodule simultaneously; The nitrogenous fertilizer of reduced levels, or itself and phosphate fertilizer compounding application grows haulm of liquorice, the accumulation of amount of dry matter, the growth of root system and glycyrrhizic acid content have obvious facilitation, and Fertilizers is more effective than what singly execute.To the leaf fall period of 3 years raw Radix Glycyrrhizaes, because Radix Glycyrrhizae acrial part is withered, come off, cause cauline leaf dry-matter accumulation amount to decrease, and now the dry-matter accumulation amount of root system and glycyrrhizic acid content reach maximum.
The compensating action of Radix Glycyrrhizae except with cut time of seedling, frequency relevant with intensity except, also have substantial connection with soil nutrient status.The Radix Glycyrrhizae annual production growing 1 year increases in the trend increased with plant height with cutting seedling, and cut seedling value when biennial Radix Glycyrrhizae plant height is 100cm fertilising the highest.Under fertilizer application condition is described suitable cut seedling after, compensatory effect is all reached to its growth, but by Different Fertilization to cut Radix Glycyrrhizae root growth and glycyrrhizic acid after seedling, liquiritin cumulative effect research actually rare.
The present invention shows the cauline leaf growth mid-term in 3 years raw Radix Glycyrrhizaes, cuts off 1/2 of plant height, the growth of root system and the impact of glycyrrhizic acid content different because of the supply situation of nitrogen, phosphate fertilizer.Under fertilizer application condition, root is long, root thick, root dry weight and glycyrrhizic acid content all significantly reduce, and illustrates that cutting seedling presents Under-compensation to the accumulation of glycyrrhizic acid in the growth of root system and root system.Use the nitrogenous fertilizer of reduced levels, or itself and phosphate fertilizer compounding application, long to licorice after cutting seedling, thick and the root system dry matter accumulation of root all has Over compensate, singly execute that phosphate fertilizer is thick to root, root system dry-matter accumulation amount all has contour compensation effect, and the phosphate fertilizer of higher level reaches Over compensate to root.Cut seedling after applied nitrogen, glycyrrhizic acid content significantly increases, and illustrates that nitrogenous fertilizer is conducive to cutting synthesis, the accumulation of glycyrrhizic acid in root system after seedling, has Over compensate to glycyrrhizic acid content.
one, test example
1, enter vigorous period in Radix Glycyrrhizae to start to carry out cutting seedling.Before cutting seedling for the first time, each community takes sample based on 10 strains at random, cutting seedling, once measures each index of acrial part every 15 days from first time.Before second time cuts seedling, define representational plant with press proof with harvest time to each community, the angle spade of transplanting by Radix Glycyrrhizae when excavating is taken advantage of a situation and is dug down, and can not hinder its side root.
2, plant height is from top to stem foot position, measures with ruler; The number of blade refers to Radix Glycyrrhizae compound leaf number.Cauline leaf is cut from stem foot position shrub and hedge trimmer, loads in bag and claim fresh weight with electronic balance; Then take back after laboratory completes, 40 DEG C of oven dry are weighed.Root length measures with ruler from reed head top, and root slightly uses slide measure to measure reed head position.
The whole strain root dug out is loaded in guipure and takes back laboratory, suck dry moisture after wash clean, with scales/electronic balance weighing, then claim dry weight after natural air drying.
Two, the mensuration of glycyrrhizic acid
Radix Glycyrrhizae after air-dry is pulverized by 2.1, crosses 60 mesh sieves (glycyrrhizic acid content measures for subsequent use) respectively and puts into the preservation of 4 DEG C, refrigerator.
2.2 test apparatuses: Agilent1100 high performance liquid chromatograph, supersonic wave cleaning machine, 50ml volumetric flask, analytical balance, electronic balance, liquid-transfering gun.
2.3 reagent: it is pure that all reagent is analysis, and water is ultra-pure water.The medicine that glycyrrhizic acid measures is methyl alcohol, 0.2mol/L ammonium acetate solution, glacial acetic acid and mono-ammonium glycyrrhizinate reference substance (purity is greater than 98%), and reference substance is provided by Nat'l Pharmaceutical & Biological Products Control Institute.
2.4 chromatographic conditions:
Chromatographic column: HepersilBDS C18 (150 × 4.6mm, 5 μm); Mobile phase: methyl alcohol-0.2mol/L ammonium acetate solution-glacial acetic acid (67:33:1); Analysis time: 20min, flow velocity: 1.0ml/min; Determined wavelength: 250nm; Column temperature 25 DEG C, sample size 20 μ l.
The preparation of 2.5 solution:
The preparation of need testing solution: get this product powder and be about 0.3g, accurately weighed, put in 50ml measuring bottle, add flowing to make an appointment 45ml, ultrasonic process (power 250W, frequency 20KHZ) 30 minutes, take out, let cool, add mobile phase to scale, shake up, filter, get subsequent filtrate, filter, as sample liquid with 0.45 μm of miillpore filter before use.
The preparation of 2.6 reference substance solution: extracting liquorice acid mono-ammonium reference substance 10mg, accurately weighed, put in 50ml measuring bottle, dissolve with mobile phase and be diluted to scale, shake all, both obtained (containing mono-ammonium glycyrrhizinate reference substance 0.2mg, amount to glycyrrhizic acid is 0.1959mg to every 1ml).
2.7 apply fertilizer and cut the impact of seedling on glycyrrhizic acid content
Table 1 shows fertilising and cuts the impact of seedling on glycyrrhizic acid content, and as can be seen from Table 1, compared with the glycyrrhizic acid content on July 28, do not execute nitrogen, phosphate fertilizer when also not cutting seedling, picking time, the content of glycyrrhizic acid added 11.56%; Nitrogen, phosphate fertilizer apply fertilizer separately or compounding application time, respectively cut the glycyrrhizic acid content of seedling process picking time compared with July 28, all present the trend of increase, illustrate that the glycyrrhizic acid content of fertilising adds 5.20%, 5.95%, 9.30%, 10.88%, 10.53%, 9.59%, 13.33%, 15.25% and 16.18% respectively, amplification is relevant to the fertilizing standards of nitrogen, presents the trend increasing glycyrrhizic acid content increase with amount of nitrogenous fertilizer.
2.8 impacts of fertilising on Radix Glycyrrhizae output
Table 2 shows the impact of fertilising on Radix Glycyrrhizae output, and fertilising affects the output of 3 years raw Radix Glycyrrhizaes.With 75 kgN/hm in each fertilizer treatment
2, 240kgP
2o
5/ hm
2the Radix Glycyrrhizae output of process is the highest, higher by 42% than not applying fertilizer; 75 kgN/hm
2, 120kgP
2o
5/ hm
2the output of process and a significant difference that do not apply fertilizer are higher than the output of not applying fertilizer by 26%; 240kgP
2o
5/ hm
2output higher by 22% than not applying fertilizer; The output of single nitrogen fertilizer application and phosphate fertilizer and also reach the significance level of difference, respectively than high 19% and 9% of not applying fertilizer between not applying fertilizer.The nitrogenous fertilizer that instruction book executes phosphate fertilizer or reduced levels can promote that Radix Glycyrrhizae output increases; And the nitrogenous fertilizer of reduced levels and phosphate fertilizer compounding application, Radix Glycyrrhizae output increases along with the increase of phosphorus application amount.
2.9 impacts of fertilising on Radix Glycyrrhizae dross proterties
Table 3 shows the impact of fertilising on Radix Glycyrrhizae dross proterties, and fertilising affects the weight of Radix Glycyrrhizae root nodule.For biennial Radix Glycyrrhizae, 240kgP
2o
5/ hm
2the nodule weight of process is the highest, heavier than the root nodule do not applied fertilizer high by 58%; Secondly be 120kgP
2o
5/ hm
2process, its root nodule anharmonic ratio is not applied fertilizer high by 27%; Instruction book is executed phosphate fertilizer and is contributed to this increase that period, Radix Glycyrrhizae root nodule weighed; Single nitrogen fertilizer application, or to join the impact executed Radix Glycyrrhizae root nodule is heavy little with phosphate fertilizer.To the harvest time of 3 years raw Radix Glycyrrhizaes, the root nodule executing phosphorus process weighs and a significant difference that do not apply fertilizer, and respectively than high 167% and 158% of not applying fertilizer, instruction book executes the growth that phosphate fertilizer can promote Radix Glycyrrhizae root nodule.
2.10 cut the impact of seedling on liquiritin content
Table 4 shows the liquiritin content cutting the biennial Radix Glycyrrhizae of the impact of seedling on liquiritin content, and not cutting liquiritin content when seedling process is gathered in the fall is 1.352%, exceeds 18% than the content of gathering summer.Find out from cutting the impact of seedling process on liquiritin content, the slow liquiritin content cutting seedling process vegetative period 1/4 is significantly higher than other process, simultaneously high by 96% than the liquiritin content in a upper period; Secondly cut seedling process for slow vegetative period 1/2, the content comparatively going up a period exceeds 51%.Illustrate that cutting seedling mid-term in haulm of liquorice growth has obvious facilitation to the synthesis of liquiritin, accumulation, cauline leaf growth is cut seedling and have overcompensate to liquiritin content mid-term, and cut off plant height 1/4 than cut off plant height 1/2 effect good.Growth is cut the liquiritin content of seedling mid-term 1/4 and is not cut between seedling and do not have difference, illustrates all to cut off 1/4 of plant height mid-term in cauline leaf fast growing period and cauline leaf growth, has contour compensation effect to liquiritin content.
Claims (8)
1. the method in Radix Glycyrrhizae rhizobium improvement saline land, is characterized in that it comprises the steps:
A. transplant: select annual Radix Glycyrrhizae seedling to carry out transplanting in spring, apply nitrogenous fertilizer, phosphate fertilizer simultaneously; Radix Glycyrrhizae shoot root head will be imbedded 3-5cm under soil layer during transplanting, root afterbody keeps flat along ditch, does not bend;
B. seedling is cut: Radix Glycyrrhizae vigorous period carries out first time and cuts seedling, cuts off 1/4 of plant height; Leaf fall period carries out second time and cuts seedling, cuts off 1/2 of plant height.
2. the method in Radix Glycyrrhizae rhizobium improvement saline land according to claim 1, is characterized in that: in described steps A, the fertilizing amount of nitrogenous fertilizer is 75-150kgN/hm
2, the fertilizing amount of phosphate fertilizer is 120-240 kgP
2o
5/ hm
2.
3. the method in Radix Glycyrrhizae rhizobium improvement saline land according to claim 2, is characterized in that: the fertilizing amount of described nitrogenous fertilizer is 75kgN/hm
2, the fertilizing amount of phosphate fertilizer is 240 kgP
2o
5/ hm
2.
4. the method in the Radix Glycyrrhizae rhizobium improvement saline land according to Claims 2 or 3, it is characterized in that: the cultivation selection of land that described steps A transplants Radix Glycyrrhizae selects average annual below rainfall 500mm, the saline and alkaline sandy loam of mild or moderate that content is less than 0.7%, more than soil thickness 1m, ventilation is good, physical features is smooth, the environmental condition of frost-free season more than 110d, more than sunshine duration 1350h.
5. the method in Radix Glycyrrhizae rhizobium improvement saline land according to claim 4, is characterized in that: planting density is the disposable field planting 22.5 of saline land Radix Glycyrrhizae ten thousand strains/hm
2.
6. the method in Radix Glycyrrhizae rhizobium according to claim 5 improvement saline land, is characterized in that: Radix Glycyrrhizae seedling be 35 degree-45 along the furrow wall held successfully in transplanting and spends inclination and a good luck direction is put, strain spacing 10-15cm, line space 30cm by described steps A.
7. the method in Radix Glycyrrhizae rhizobium according to claim 6 improvement saline land, is characterized in that: Radix Glycyrrhizae seedling be selected from Glycyrrhiza Uralensis (
glycyrrhiza uralensis), glycyrrhiza inflate bat (
g. inflata) or glycyrrhiza glabra (
g. glabra).
8. the method in Radix Glycyrrhizae rhizobium according to claim 7 improvement saline land, is characterized in that: Radix Glycyrrhizae seedling be selected from Glycyrrhiza Uralensis (
glycyrrhiza uralensis).
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| CN105052493A (en) * | 2015-08-14 | 2015-11-18 | 黄国斌 | Planting method for ecological restoration type liquorice |
| CN107821081A (en) * | 2017-11-07 | 2018-03-23 | 亿利首建生态科技有限公司 | A kind of desertification wetland with saline-alkaline method of forestation |
| CN112889387A (en) * | 2021-03-18 | 2021-06-04 | 石河子大学 | Method for planting liquorice bloat in saline-alkali soil and desalting liquorice by soil improvement |
| CN113079963A (en) * | 2021-03-29 | 2021-07-09 | 美康中药材有限公司 | Planting method of liquorice bloat |
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| CN112889387A (en) * | 2021-03-18 | 2021-06-04 | 石河子大学 | Method for planting liquorice bloat in saline-alkali soil and desalting liquorice by soil improvement |
| CN113079963A (en) * | 2021-03-29 | 2021-07-09 | 美康中药材有限公司 | Planting method of liquorice bloat |
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