CN114600906B - Rubber discharging regulator for rubber tree and application - Google Patents
Rubber discharging regulator for rubber tree and application Download PDFInfo
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- CN114600906B CN114600906B CN202210290259.9A CN202210290259A CN114600906B CN 114600906 B CN114600906 B CN 114600906B CN 202210290259 A CN202210290259 A CN 202210290259A CN 114600906 B CN114600906 B CN 114600906B
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- 244000043261 Hevea brasiliensis Species 0.000 title claims abstract description 199
- 238000007599 discharging Methods 0.000 title claims abstract description 167
- 229920001971 elastomer Polymers 0.000 title abstract description 151
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims abstract description 138
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims abstract description 42
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 42
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims abstract description 42
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims abstract description 42
- ZQTYRTSKQFQYPQ-UHFFFAOYSA-N trisiloxane Chemical class [SiH3]O[SiH2]O[SiH3] ZQTYRTSKQFQYPQ-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000005520 cutting process Methods 0.000 claims abstract description 39
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 38
- 229920000570 polyether Polymers 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 31
- 230000000903 blocking effect Effects 0.000 claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- 239000007864 aqueous solution Substances 0.000 claims abstract description 5
- 239000000839 emulsion Substances 0.000 claims abstract description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 20
- 239000004816 latex Substances 0.000 claims description 19
- 229920000126 latex Polymers 0.000 claims description 19
- -1 racecadherin B Substances 0.000 claims description 10
- 241000196324 Embryophyta Species 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000001737 promoting effect Effects 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 238000002360 preparation method Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 10
- NSHPHXHGRHSMIK-IWQSFCKSSA-N latrunculin B Natural products C[C@H]1CC[C@@H]2C[C@@H](C[C@@](O)(O2)[C@@H]3CSC(=O)N3)OC(=O)C=C(C)/CCC=C/1 NSHPHXHGRHSMIK-IWQSFCKSSA-N 0.000 abstract description 3
- NSHPHXHGRHSMIK-JRIKCGFMSA-N latrunculin B Chemical compound C([C@H]1[C@@]2(O)C[C@H]3C[C@H](O2)CC[C@@H](\C=C/CC\C(C)=C/C(=O)O3)C)SC(=O)N1 NSHPHXHGRHSMIK-JRIKCGFMSA-N 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 41
- 239000003292 glue Substances 0.000 description 40
- 238000012360 testing method Methods 0.000 description 14
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 12
- 230000001070 adhesive effect Effects 0.000 description 12
- 238000005303 weighing Methods 0.000 description 11
- 230000002035 prolonged effect Effects 0.000 description 9
- 239000001103 potassium chloride Substances 0.000 description 6
- 235000011164 potassium chloride Nutrition 0.000 description 6
- 239000004480 active ingredient Substances 0.000 description 5
- 238000011056 performance test Methods 0.000 description 4
- 238000007619 statistical method Methods 0.000 description 4
- 229920003052 natural elastomer Polymers 0.000 description 3
- 229920001194 natural rubber Polymers 0.000 description 3
- 239000001879 Curdlan Substances 0.000 description 2
- 229920002558 Curdlan Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229940078035 curdlan Drugs 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- UDPGUMQDCGORJQ-UHFFFAOYSA-N (2-chloroethyl)phosphonic acid Chemical compound OP(O)(=O)CCCl UDPGUMQDCGORJQ-UHFFFAOYSA-N 0.000 description 1
- 239000005976 Ethephon Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- JKGNLRCENOBWTF-UHFFFAOYSA-L dipotassium;chloride;iodide Chemical compound [Cl-].[K+].[K+].[I-] JKGNLRCENOBWTF-UHFFFAOYSA-L 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/12—Iodine, e.g. iodophors; Compounds thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention provides a rubber tree rubber discharge regulating composition which comprises potassium iodide, lanchunkalin B (latrunculin B), polyether modified trisiloxane and carboxymethyl cellulose. The invention also provides a rubber tree discharging regulator which is an aqueous solution of the rubber tree discharging regulating composition. The rubber tree rubber discharge regulating composition is dissolved in water to prepare a regulator which is applied to Yu Xiangjiao tree cutting surfaces, and the components are synergistic to reduce the emulsion blocking index, effectively prolong the rubber tree rubber discharge time and improve the rubber discharge speed, so that the effect of obviously increasing the dry rubber yield is achieved. The rubber tree rubber discharge regulator has the characteristics of low cost, simple preparation, easy operation, labor saving and high efficiency, and is easy to apply and popularize in rubber gardens.
Description
Technical Field
The invention relates to the technical field of agriculture, in particular to a rubber discharging regulator for rubber trees and application thereof.
Background
Natural rubber is processed from latex obtained by cutting a latex tube (i.e., rubber tapping) in the bark of a rubber tree. The duration of rubber tree discharge after tapping is an important factor in determining latex yield. The unsmooth rubber discharge of the rubber tree leads to the reduction of the rubber discharge speed, the shortening of the rubber discharge time and the reduction of the latex yield; the long time of rubber discharge is easy to cause the phenomenon of long flow of latex. The long flow is easy to induce dead skin of rubber tree, which is unfavorable for realizing high and stable yield of natural rubber. At present, in the production process of natural rubber, a Shi Yixi method is often adopted to prolong the rubber discharging time and increase the yield of latex. However, long-term administration of ethephon is liable to cause rubber tree death, and the latex yield is seriously affected. The formation of a tube wound end plug is a major factor in determining the duration of rubber tree gum discharge. The formation of the blocking object is properly delayed, which is beneficial to prolonging the rubber discharging time and enabling the rubber tree to achieve high and stable yield.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a rubber discharging regulator for rubber trees and application thereof. The rubber tree rubber discharging regulator is applied to Yu Xiangjiao tree cutting surface, so that the emulsion blockage index can be reduced, the rubber tree rubber discharging time can be obviously prolonged, the rubber discharging speed can be improved, and the effect of increasing the yield of latex can be achieved.
The first aspect of the invention provides a rubber tree discharging regulation composition, which is characterized in that the components of the rubber tree discharging regulation composition comprise potassium iodide, lanchunkin B (latrunculin B), polyether modified trisiloxane and carboxymethyl cellulose.
The invention selects potassium iodide and the lanchunkin B (latrunculin B) as active ingredients of the latex discharging regulator, which can delay the blockage of a milk tube, improve the latex discharging speed, prolong the latex discharging time and increase the latex yield. The polyether modified trisiloxane surfactant has good wettability, strong adhesion, excellent ductility and good rain erosion resistance, and the polyether modified trisiloxane is added into the rubber tree rubber discharge regulator, so that the rubber discharge regulator can achieve optimal adhesion and spreading on the rubber tree cutting surface, the effect of the rubber discharge regulator is greatly enhanced, and the use concentration and the use amount of the rubber discharge regulator are reduced. The carboxymethyl cellulose in the invention has excellent dispersibility and thickening property, and is commonly used as an auxiliary agent of pesticides. The viscosity of the solution can be improved, so that the solution is more uniformly distributed, and the rubber discharging regulator is better adhered to the cut surface of the rubber tree.
Preferably, the components of the rubber tree rubber discharge regulating composition comprise the following components in parts by weight:
15000 to 40000 parts (for example, 15000 parts, 18000 parts, 20000 parts, 22000 parts, 25000 parts, 27000 parts, 30000 parts, 32000 parts, 34000 parts, 35000 parts, 38000 parts, 40000 parts, etc.) of potassium iodide;
0.004-0.011 parts (e.g., 0.004 parts, 0.005 parts, 0.006 parts, 0.007 parts, 0.008 parts, 0.009 parts, 0.010 parts, 0.011 parts, etc.) of lanchunkalin B;
300 to 500 parts (e.g., 300 parts, 320 parts, 350 parts, 380 parts, 400 parts, 420 parts, 440 parts, 450 parts, 480 parts, 500 parts, etc.) of polyether modified trisiloxane;
and 18000 to 24000 parts (e.g., 18000 parts, 19000 parts, 20000 parts, 21000 parts, 22000 parts, 23000 parts, 24000 parts, etc.) of carboxymethyl cellulose.
More preferably, the components of the rubber tree rubber discharge regulating composition comprise 25000-35000 parts of potassium iodide, 0.006-0.010 part of Lachunkalin B, 350-450 parts of polyether modified trisiloxane and 20000-22000 parts of carboxymethyl cellulose in parts by weight.
Further preferably, the components of the rubber tree discharging regulation composition comprise 30000 parts of potassium iodide, 0.008 part of lanchunkalin B, 400 parts of polyether modified trisiloxane and 22000 parts of carboxymethyl cellulose in parts by weight.
In a second aspect, the present invention provides a rubber tree discharging regulator, which is an aqueous solution of the rubber tree discharging regulating composition according to the first aspect of the present invention.
The rubber tree discharging regulator can be used with high concentration, and can be diluted properly according to proper concentration, or can be used directly, and the invention is not particularly limited, and in specific practice, the rubber tree discharging regulator can be adjusted according to specific conditions by a person skilled in the art.
Wherein, when the rubber tree rubber discharge regulator is used, 1L of water contains 15 to 40g of potassium iodide, 0.004 to 0.011mg of labrocalin B, 300 to 500mg of polyether modified trisiloxane and 18 to 24g of carboxymethyl cellulose, preferably 1L of water contains 25 to 35g of potassium iodide, 0.006 to 0.010mg of labrocalin B, 350 to 450mg of polyether modified trisiloxane and 20 to 22g of carboxymethyl cellulose, and further preferably 1L of water contains 30g of potassium iodide, 0.008mg of labrocalin B, 400mg of polyether modified trisiloxane and 22g of carboxymethyl cellulose.
The third aspect of the invention provides a preparation method of the rubber tree discharging regulator of the second aspect of the invention, which is obtained by dissolving the larchunkin B with a small amount of dimethyl sulfoxide and then dissolving all components in water.
Wherein, dimethyl sulfoxide mainly plays a role in dissolution, a person skilled in the art can dissolve the dimethyl sulfoxide with a small amount of dimethyl sulfoxide according to the amount of the lanugo-curdlan B, and the dosage of the dimethyl sulfoxide is reduced as far as possible on the premise of realizing the dissolution of the lanugo-curdlan B, and the specific dosage is not limited by the invention. In the preparation process, a small amount of water can be added into the rubber tree discharging regulation composition in the rubber tree discharging regulation agent to prepare high concentration, and when the composition is used, water is added for proper dilution according to proper use concentration and required dosage; the concentration of the water can also be prepared by directly adding a sufficient amount of water. Therefore, the present invention is not particularly limited in terms of the amount of water to be added, and in specific practice, a person skilled in the art can select a preparation method which is convenient to operate according to the specific circumstances.
In a fourth aspect, the present invention provides a rubber tree discharging regulation composition according to the first aspect of the present invention, or a rubber tree discharging regulator according to the second aspect of the present invention, for use in promoting rubber tree discharging.
The rubber tree discharging regulation composition of the first aspect of the invention or the rubber tree discharging regulator of the second aspect of the invention can prolong the discharging time of rubber trees, improve the discharging speed, reduce the blockage index of a milk tube and achieve the aim of increasing the yield of latex.
In a fifth aspect, the present invention provides a method for promoting rubber tree ejection, wherein the rubber tree ejection regulating composition according to the first aspect of the present invention is dissolved with water to an appropriate concentration, or the rubber tree ejection regulating agent according to the second aspect of the present invention is adjusted with water to an appropriate concentration, such that 1L of water contains 15 to 40g of potassium iodide, 0.004 to 0.011mg of lanchunkin B, 300 to 500mg of polyether-modified trisiloxane and 18 to 24g of carboxymethyl cellulose, and then the method is applied to 1.8 to 2.2cm above and below the cut surface of the rubber tree after 22 to 26 hours of ejection stop, in an amount of 1 to 3 mL/plant (the "amount" refers to the amount of the aqueous solution after the rubber tree ejection regulating composition according to the first aspect of the present invention is dissolved with water to an appropriate concentration, or the amount of the aqueous solution after the rubber tree ejection regulating agent according to the second aspect of the present invention is adjusted with water to an appropriate concentration).
Preferably, after the rubber tree discharging adjusting composition according to the first aspect of the present invention is dissolved in water to an appropriate concentration, or after the rubber tree discharging adjusting agent according to the second aspect of the present invention is adjusted in water to an appropriate concentration, 1L of water contains 25 to 35g of potassium iodide, 0.006 to 0.010mg of labrocolin B, 350 to 450mg of polyether-modified trisiloxane and 20 to 22g of carboxymethyl cellulose, more preferably 1L of water contains 30g of potassium iodide, 0.008mg of labrocolin B, 400mg of polyether-modified trisiloxane and 22g of carboxymethyl cellulose.
Preferably, the application is performed at a position of 2cm above and below the cut surface of the rubber tree 24 hours after stopping the discharge.
Preferably, the amount is 2 mL/piece when applied.
The rubber tree rubber discharge regulating composition is dissolved in water to prepare a regulator which is applied to Yu Xiangjiao tree cutting surfaces, and the components are synergistic, so that the emulsion blocking index can be reduced, the rubber discharge time of the rubber tree is effectively prolonged, the rubber discharge speed is improved, and the effect of remarkably increasing the yield of the latex is achieved. The rubber tree rubber discharge regulator has the characteristics of low cost, simple preparation, easy operation, labor saving and high efficiency, and is easy to apply and popularize in rubber gardens.
Detailed Description
The invention will be further described with reference to specific examples to provide a better understanding of the invention. The specific techniques or conditions are not identified in the examples and are performed according to techniques or conditions described in the literature in this field or according to the product specifications. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Example 1
The embodiment provides a rubber tree discharging regulator, which comprises 1L of water containing 30g of potassium iodide, 0.008mg of labrocolin B, 400mg of polyether modified trisiloxane and 22g of carboxymethyl cellulose.
The preparation method of the rubber discharging regulator for the rubber tree comprises the following steps: weighing potassium iodide, lachunkalin B, polyether modified trisiloxane and carboxymethyl cellulose according to a proportion, dissolving Lachunkalin B with a small amount of 95% dimethyl sulfoxide, dissolving all components in water, and finally fixing the volume to 1L.
The using method of the rubber discharging regulator for the rubber tree comprises the following steps: the rubber tree discharging regulator is applied to the position 2cm above and below the rubber tree cutting surface 24h after rubber cutting, and 2mL of the regulator is applied to each rubber tree.
Example 2
The embodiment provides a rubber tree discharging regulator, which comprises 15g of potassium iodide, 0.011mg of lanchunkalin B, 300mg of polyether modified trisiloxane and 22g of carboxymethyl cellulose in 1L of water.
The preparation method of the rubber discharging regulator for the rubber tree comprises the following steps: weighing potassium iodide, lachunkalin B, polyether modified trisiloxane and carboxymethyl cellulose according to a proportion, dissolving Lachunkalin B with a small amount of 95% dimethyl sulfoxide, dissolving all components in water, and finally fixing the volume to 1L.
The using method of the rubber discharging regulator for the rubber tree comprises the following steps: the rubber tree discharging regulator is applied to the position 2cm above and below the rubber tree cutting surface 24h after rubber cutting, and 2mL of the regulator is applied to each rubber tree.
Example 3
The embodiment provides a rubber tree discharging regulator, which comprises 1L of water containing 40g of potassium iodide, 0.004mg of Lachunkalin B, 500mg of polyether modified trisiloxane and 22g of carboxymethyl cellulose.
The preparation method of the rubber discharging regulator for the rubber tree comprises the following steps: weighing potassium iodide, lachunkalin B, polyether modified trisiloxane and carboxymethyl cellulose according to a proportion, dissolving Lachunkalin B with a small amount of 95% dimethyl sulfoxide, dissolving all components in water, and finally fixing the volume to 1L.
The using method of the rubber discharging regulator for the rubber tree comprises the following steps: the rubber tree discharging regulator is applied to the position 1.8cm above and below the rubber tree cutting surface 22h after rubber cutting, and 1mL of the regulator is applied to each rubber tree.
Example 4
The embodiment provides a rubber tree discharging regulator, which comprises 1L of water containing 30g of potassium iodide, 0.004mg of Lachunkalin B, 400mg of polyether modified trisiloxane and 22g of carboxymethyl cellulose.
The preparation method of the rubber discharging regulator for the rubber tree comprises the following steps: weighing potassium iodide, lachunkalin B, polyether modified trisiloxane and carboxymethyl cellulose according to a proportion, dissolving Lachunkalin B with a small amount of 95% dimethyl sulfoxide, dissolving all components in water, and finally fixing the volume to 1L.
The using method of the rubber discharging regulator for the rubber tree comprises the following steps: the rubber discharging regulator is applied to the position 2.2cm above and below the rubber tree cutting surface 26h after rubber cutting, and 3mL of the regulator is applied to each tree.
Example 5
The embodiment provides a rubber tree discharging regulator, which comprises 1L of water containing 20g of potassium iodide, 0.004mg of Lachunkalin B, 450mg of polyether modified trisiloxane and 24g of carboxymethyl cellulose.
The preparation method of the rubber discharging regulator for the rubber tree comprises the following steps: weighing potassium iodide, lachunkalin B, polyether modified trisiloxane and carboxymethyl cellulose according to a proportion, dissolving Lachunkalin B with a small amount of 95% dimethyl sulfoxide, dissolving all components in water, and finally fixing the volume to 1L.
The using method of the rubber discharging regulator for the rubber tree comprises the following steps: the rubber discharging regulator is applied to the position 2cm above and below the rubber tree cutting surface 24h after rubber cutting, and 2mL of the regulator is applied to each tree.
Example 6
The embodiment provides a rubber tree discharging regulator, which comprises 1L of water containing 22g of potassium iodide, 0.006mg of Lachunkalin B, 500mg of polyether modified trisiloxane and 18g of carboxymethyl cellulose.
The preparation method of the rubber discharging regulator for the rubber tree comprises the following steps: weighing potassium iodide, lachunkalin B, polyether modified trisiloxane and carboxymethyl cellulose according to a proportion, dissolving Lachunkalin B with a small amount of 95% dimethyl sulfoxide, dissolving all components in water, and finally fixing the volume to 1L.
The using method of the rubber discharging regulator for the rubber tree comprises the following steps: the rubber discharging regulator is applied to the position 2cm above and below the rubber tree cutting surface 24h after rubber cutting, and 2mL of the regulator is applied to each tree.
Example 7
The embodiment provides a rubber tree discharging regulator, which comprises 35g of potassium iodide, 0.010mg of labrocolin B, 350mg of polyether modified trisiloxane and 21g of carboxymethyl cellulose in 1L of water.
The preparation method of the rubber discharging regulator for the rubber tree comprises the following steps: weighing potassium iodide, lachunkalin B, polyether modified trisiloxane and carboxymethyl cellulose according to a proportion, dissolving Lachunkalin B with a small amount of 95% dimethyl sulfoxide, dissolving all components in water, and finally fixing the volume to 1L.
The using method of the rubber discharging regulator for the rubber tree comprises the following steps: the rubber discharging regulator is applied to the position 2cm above and below the rubber tree cutting surface 24h after rubber cutting, and 2mL of the regulator is applied to each tree.
Example 8
The embodiment provides a rubber tree discharging regulator, which comprises 1L of water containing 38g of potassium iodide, 0.005mg of Lachunkalin B, 370mg of polyether modified trisiloxane and 24g of carboxymethyl cellulose.
The preparation method of the rubber discharging regulator for the rubber tree comprises the following steps: weighing potassium iodide, lachunkalin B, polyether modified trisiloxane and carboxymethyl cellulose according to a proportion, dissolving Lachunkalin B with a small amount of 95% dimethyl sulfoxide, dissolving all components in water, and finally fixing the volume to 1L.
The using method of the rubber discharging regulator for the rubber tree comprises the following steps: the rubber discharging regulator is applied to the position 2cm above and below the rubber tree cutting surface 24h after rubber cutting, and 2mL of the regulator is applied to each tree.
Comparative example 1
The comparative example provides a rubber tree discharging regulator, which comprises 1L of water containing 30g of potassium iodide, 400mg of polyether modified trisiloxane and 22g of carboxymethyl cellulose.
The preparation method of the rubber discharging regulator for the rubber tree comprises the following steps: weighing potassium iodide, polyether modified trisiloxane and carboxymethyl cellulose according to a proportion, dissolving the lanchunkalin B with a small amount of 95% dimethyl sulfoxide, dissolving all components in water, and finally fixing the volume to 1L.
The using method of the rubber discharging regulator for the rubber tree comprises the following steps: the rubber discharging regulator is applied to the position 2cm above and below the rubber tree cutting surface 24h after rubber cutting, and 2mL of the regulator is applied to each tree.
Comparative example 2
The comparative example provides a rubber tree discharging regulator, which comprises 1L of water containing 30g of potassium chloride, 0.008mg of Lachunkalin B, 400mg of polyether modified trisiloxane and 22g of carboxymethyl cellulose.
The preparation method of the rubber discharging regulator for the rubber tree comprises the following steps: weighing potassium chloride, lachunkalin B, polyether modified trisiloxane and carboxymethyl cellulose according to a proportion, dissolving Lachunkalin B with a small amount of 95% dimethyl sulfoxide, dissolving all components in water, and finally fixing the volume to 1L.
The using method of the rubber discharging regulator for the rubber tree comprises the following steps: the rubber discharging regulator is applied to the position 2cm above and below the rubber tree cutting surface 24h after rubber cutting, and 2mL of the regulator is applied to each tree.
Comparative example 3
This comparative example provides a rubber tree gum discharge regulator comprising 0.008mg of langchun B, 400mg of polyether modified trisiloxane and 22g of carboxymethyl cellulose.
The preparation method of the rubber discharging regulator for the rubber tree comprises the following steps: weighing potassium iodide, lanchunkin B and carboxymethyl cellulose according to a proportion, dissolving the lanchunkin B with a small amount of 95% dimethyl sulfoxide, dissolving all components in water, and finally fixing the volume to 1L.
The using method of the rubber discharging regulator for the rubber tree comprises the following steps: the rubber discharging regulator is applied to the position 2cm above and below the rubber tree cutting surface 24h after rubber cutting, and 2mL of the regulator is applied to each tree.
Table 1 the composition ratios of the respective examples and comparative examples
| Water and its preparation method | Potassium iodide | Potassium chloride | Lachunkalin B | Polyether modified trisiloxane | Carboxymethyl cellulose | |
| Example 1 | 1L | 30g | - | 0.008mg | 400mg | 22g |
| Example 2 | 1L | 15g | - | 0.011mg | 300mg | 22g |
| Example 3 | 1L | 40g | - | 0.004mg | 500mg | 22g |
| Example 4 | 1L | 30g | - | 0.004mg | 400mg | 22g |
| Example 5 | 1L | 20g | - | 0.004mg | 450mg | 24g |
| Example 6 | 1L | 22g | - | 0.006mg | 500mg | 18g |
| Example 7 | 1L | 35g | - | 0.010mg | 350mg | 21g |
| Example 8 | 1L | 38g | - | 0.005mg | 370mg | 24g |
| Comparative example 1 | 1L | 30g | - | - | 400mg | 22g |
| Comparative example 2 | 1L | - | 30g | 0.008mg | 400mg | 22g |
| Comparative example 3 | 1L | - | - | 0.008mg | 400mg | 22g |
Test example 1
The rubber tree discharging regulator provided by the test example for the examples 1-8 and the comparative examples 1-3 is used for testing the performance of the hot grinding 7-33-97 of the rubber tree planted for 15 years, and is specifically as follows:
9 months in 2020, selecting and planting 15 years old rubber trees by red team in the national academy of Tropical agricultural sciences of Corp.Nakawa, hainan, and applying a rubber discharge regulator 2cm above and below the cutting surface of the rubber trees, wherein each tree is applied with 2mL. There were 5 strains and 3 replicates per treatment. Clean water was used to apply the cut surface as a control. The results are shown in Table 2.
The glue discharging time refers to the time from the start to the stop of glue discharging after glue cutting; the initial speed of glue discharge and the blocking index reflect the smoothness of glue discharge, wherein the initial speed of glue discharge = glue discharge amount (mL)/5 (min) of 0-5 min after glue cutting; blockage index = initial speed of adhesive discharge (mL/min)/total amount of adhesive discharge (mL) ×100%; dry gum yield = dry gum content (g/mL) x total gum discharge (mL), where dry gum content refers to the weight of rubber contained in each milliliter of fresh latex. .
TABLE 2 influence of different rubber Tree discharging regulators on Hot grinding 7-33-97 rubber Tree discharging results
| Numbering device | Time for discharging glue (min) | Initial velocity of adhesive discharge (mL/min) | Blocking index (%) | Yield of Single plant Dry glue (g) |
| Example 1 | 212.40a | 6.23a | 2.62b | 89.78a |
| Example 2 | 159.50b | 5.28b | 3.49b | 69.37b |
| Example 3 | 162.30b | 5.37b | 4.06a | 64.68bc |
| Example 4 | 205.70a | 6.45a | 3.22b | 82.83a |
| Example 5 | 158.90b | 5.73ab | 3.59b | 70.24b |
| Example 6 | 197.80a | 6.03a | 3.57b | 74.16b |
| Example 7 | 195.30a | 6.21a | 3.13b | 82.51a |
| Example 8 | 187.70ab | 5.82ab | 2.94b | 79.68ab |
| Comparative example 1 | 134.60c | 5.19b | 4.11a | 59.65c |
| Comparative example 2 | 118.40cd | 4.71c | 4.33a | 52.42c |
| Comparative example 3 | 118.40cd | 4.62c | 4.39a | 53.89c |
| Control group | 103.80d | 3.72d | 4.53a | 39.97d |
Remarks: statistical analysis was performed using SPSS 19.0 software, with the same column number identifying that the different letters represent significant differences (P < 0.05).
In Table 2, after the rubber tree discharging regulator provided by the invention is coated on the 7-33-97 cut surface of the 15-year hot grinding rubber tree, compared with the comparative example and the comparative group, the rubber tree blocking index can be reduced in the embodiment 1-8, the rubber tree discharging time can be effectively prolonged, the rubber tree discharging initial speed can be effectively improved, the rubber trunk rubber yield can be obviously increased, and especially, the rubber tree discharging time and the dry rubber yield can be improved and the blocking index can be reduced most obviously in the embodiment 1.
Meanwhile, compared with comparative example 3, the rubber discharging time, the rubber discharging initial speed, the blocking index and the dry rubber yield of the embodiment 1 are obviously different, and in the comparative example 2, potassium chloride is used for replacing potassium iodide, the rubber discharging time, the rubber discharging initial speed and the dry rubber yield of the rubber tree are obviously lower than those of the embodiment 1, the blocking index is obviously higher than those of the embodiment 1, so that the rubber discharging time of the rubber tree is obviously prolonged and the rubber discharging initial speed and the dry rubber yield are improved by adding potassium iodide into the rubber discharging regulator of the rubber tree. Example 1 also increased the gum discharge time and the dry gum yield of the larchunking B compared to comparative example 1, indicating that larchunking B as an active ingredient can increase the gum discharge regulator effect of the rubber tree.
Test example 2
The test example provides a performance test of the rubber tree discharging regulator for hot grinding 7-33-97 of rubber tree planted for 10 years, and the performance test is specifically as follows:
6 months in 2020, selecting twelve teams of test farms of Tropical agricultural academy of sciences of China, nakagaku, md.Bao, hainan, and planting for 10 years, hot grinding for 7-33-97, applying a rubber discharge regulator 3 times at positions of 2cm above and below the cutting surface of the rubber tree, wherein the interval time between each application of the rubber discharge regulator is 1 month, and each application of 2mL of rubber is carried out. There were 5 strains and 3 replicates per treatment. Clean water was used to apply the cut surface as a control.
The glue discharging time refers to the time from the start to the stop of glue discharging after glue cutting; the initial speed of glue discharge and the blocking index reflect the smoothness of glue discharge, wherein the initial speed of glue discharge = glue discharge amount (mL)/5 (min) of 0-5 min after glue cutting; blockage index = initial speed of adhesive discharge (mL/min)/total amount of adhesive discharge (mL) ×100%; dry gum yield = dry gum content (g/mL) x total gum discharge (mL), where dry gum content refers to the weight of rubber contained in each milliliter of fresh latex.
TABLE 3 influence of different rubber Tree discharging regulators on Hot grinding 7-33-97 rubber Tree discharging results
| Numbering device | Time for discharging glue (min) | Initial velocity of adhesive discharge (mL/min) | Blockage ofIndex (%) | Yield of Single plant Dry glue (g) |
| Example 1 | 136.41a | 6.08a | 2.47b | 76.83a |
| Example 2 | 93.79c | 5.25ab | 2.53b | 53.76bc |
| Example 3 | 114.83b | 5.22ab | 2.87b | 54.91bc |
| Example 4 | 132.24a | 6.94a | 3.54ab | 71.62a |
| Example 5 | 105.62bc | 5.48a | 2.73b | 55.44b |
| Example 6 | 115.22b | 6.01a | 3.22ab | 60.56b |
| Example 7 | 111.58b | 5.87a | 3.31ab | 62.25ab |
| Example 8 | 106.57bc | 5.31ab | 2.45b | 57.00b |
| Comparative example 1 | 89.55cd | 4.88b | 3.85a | 45.32c |
| Comparative example 2 | 84.84d | 4.52b | 4.09a | 39.77cd |
| Comparative example 3 | 83.67d | 4.37b | 4.30a | 39.54cd |
| Control group | 73.78d | 4.44b | 4.37a | 32.29d |
Remarks: statistical analysis was performed using SPSS 19.0 software, with the same column number identifying that the different letters represent significant differences (P < 0.05).
In Table 3, after the rubber tree discharging regulator provided by the invention is coated on the cut surface of the rubber tree which is subjected to hot grinding for 7-33-97 years, compared with the comparative example and the comparative group, the rubber tree discharging regulator provided by the invention can reduce the rubber tree blocking index, effectively prolong the rubber tree discharging time and improve the rubber tree discharging initial speed, obviously increase the rubber trunk rubber yield, and especially has the most obvious effect of improving the rubber tree discharging time and the rubber trunk yield and reducing the blocking index in the embodiment 1. The rubber discharging regulator provided by the invention can regulate rubber discharging of rubber trees in rubber trees with different ages, and can obviously improve the yield of rubber trunk.
Meanwhile, compared with comparative example 3, the rubber discharging time, the rubber discharging initial speed, the blocking index and the dry rubber yield of the embodiment 1 are obviously different, and in the comparative example 2, potassium chloride is used for replacing potassium iodide, the rubber discharging time, the rubber discharging initial speed and the dry rubber yield of the rubber tree are obviously lower than those of the embodiment 1, the blocking index is obviously higher than those of the embodiment 1, so that the rubber discharging time of the rubber tree is obviously prolonged and the rubber discharging initial speed and the dry rubber yield are improved by adding potassium iodide into the rubber discharging regulator of the rubber tree. Example 1 also increased the gum discharge time and the dry gum yield of the larchunking B compared to comparative example 1, indicating that larchunking B as an active ingredient can increase the gum discharge regulator effect of the rubber tree.
Test example 3
The test example provides a performance test of the rubber tree rubber discharge regulator for hot-grinding 8-79 strain of rubber tree planted for 7 years, and the performance test is specifically as follows:
selecting twelve teams of test farms of Tropical agricultural academy of sciences of China, new village, baozhou, china, planting for 7 years, hot grinding for 8-79, applying a rubber discharge regulator at the position of 2cm above and below the cutting surface of the rubber tree, and applying 2mL of rubber discharge regulator per tree. There were 5 strains and 3 replicates per treatment. Clean water was used to apply the cut surface as a control.
The glue discharging time refers to the time from the start to the stop of glue discharging after glue cutting; the initial speed of glue discharge and the blocking index reflect the smoothness of glue discharge, wherein the initial speed of glue discharge = glue discharge amount (mL)/5 (min) of 0-5 min after glue cutting; blockage index = initial speed of adhesive discharge (mL/min)/total amount of adhesive discharge (mL) ×100%; dry gum yield = dry gum content (g/mL) x total gum discharge (mL), where dry gum content refers to the weight of rubber contained in each milliliter of fresh latex.
TABLE 4 Effect of rubber Tree rubber discharge regulator on rubber discharge in Hot ground 8-79 rubber Tree
| Numbering device | Time for discharging glue (min) | Initial velocity of adhesive discharge (mL/min) | Blocking index (%) | Yield of Single plant Dry glue (g) |
| Example 1 | 38.67a | 3.38a | 4.26b | 15.78a |
| Example 2 | 33.54ab | 2.60b | 5.48ab | 11.72ab |
| Example 3 | 34.27a | 2.81b | 4.55b | 11.55ab |
| Example 4 | 37.62a | 3.23a | 4.40b | 13.54a |
| Example 5 | 34.79a | 2.93ab | 5.64a | 11.64ab |
| Example 6 | 36.73a | 3.22a | 5.19b | 12.06ab |
| Example 7 | 35.09a | 3.17a | 5.84a | 13.42a |
| Example 8 | 35.48a | 2.65b | 4.26b | 12.67a |
| Comparative example 1 | 32.82ab | 2.26b | 5.98a | 9.95b |
| Comparative example 2 | 29.25b | 2.17b | 6.28a | 8.80b |
| Comparative example 3 | 28.51b | 2.11b | 6.13a | 8.93b |
| Control group | 25.50b | 2.24b | 6.36a | 8.45b |
Remarks: statistical analysis was performed using SPSS 19.0 software, with the same column number identifying that the different letters represent significant differences (P < 0.05).
In Table 4, after the rubber tree is hot ground to 8-79 varieties of cut surfaces and the rubber tree discharging regulator provided by the invention is applied, compared with a comparison example and a comparison group, the rubber tree discharging regulator provided by the invention has the advantages that the rubber tree blocking index can be reduced, the rubber tree discharging time is effectively prolonged, the rubber tree discharging initial speed is effectively increased, the rubber trunk yield is obviously increased, and especially, the rubber tree discharging time and the dry yield are improved and the blocking index is most obviously reduced in the embodiment 1. The rubber discharging regulator provided by the invention can regulate rubber discharging of rubber trees in different rubber tree varieties.
Meanwhile, compared with comparative example 3, the rubber discharging time, the rubber discharging initial speed, the blocking index and the dry rubber yield of the embodiment 1 are obviously different, and in the comparative example 2, potassium chloride is used for replacing potassium iodide, the rubber discharging time, the rubber discharging initial speed and the dry rubber yield of the rubber tree are obviously lower than those of the embodiment 1, the blocking index is obviously higher than those of the embodiment 1, so that the rubber discharging time of the rubber tree is obviously prolonged and the rubber discharging initial speed and the dry rubber yield are improved by adding potassium iodide into the rubber discharging regulator of the rubber tree. Example 1 also increased the gum discharge time and the dry gum yield of the larchunking B compared to comparative example 1, indicating that larchunking B as an active ingredient can increase the gum discharge regulator effect of the rubber tree.
Test example 4
This test example tests the performance of the gum discharging regulator provided in examples 1-8 in a strain of rubber tree PR107 planted for 23 years, specifically as follows:
and selecting rubber tree PR107 planted for 23 years by a test farm II of Tropical agricultural academy of sciences of China in New village of Baozhong, hainan province, and applying a rubber drainage regulator 2cm above and below the cut surface of the rubber tree, wherein the dosage of the rubber drainage regulator is 2mL for each tree. There were 5 strains and 3 replicates per treatment. Clean water was used to apply the cut surface as a control.
The glue discharging time refers to the time from the start to the stop of glue discharging after glue cutting; the initial speed of glue discharge and the blocking index reflect the smoothness of glue discharge, wherein the initial speed of glue discharge = glue discharge amount (mL)/5 (min) of 0-5 min after glue cutting; blockage index = initial speed of adhesive discharge (mL/min)/total amount of adhesive discharge (mL) ×100%; dry gum yield = dry gum content (g/mL) x total gum discharge (mL), where dry gum content refers to the weight of rubber contained in each milliliter of fresh latex. .
TABLE 5 influence of rubber Tree rubber discharge regulator on rubber discharge in PR107 rubber Tree
| Numbering device | Time for discharging glue (min) | Initial velocity of adhesive discharge (mL/min) | Blocking index (%) | Yield of Single plant Dry glue (g) |
| Example 1 | 229.61a | 4.71a | 4.62b | 75.77a |
| Example 2 | 205.86ab | 4.39a | 4.93b | 69.81b |
| Example 3 | 191.92b | 4.27ab | 4.95b | 68.29b |
| Example 4 | 217.83a | 4.69a | 4.82b | 74.36a |
| Example 5 | 197.26b | 4.14ab | 4.81b | 69.54b |
| Example 6 | 209.71a | 4.41a | 4.73b | 70.93a |
| Example 7 | 198.85b | 4.47a | 4.88b | 72.73a |
| Example 8 | 187.04b | 4.16ab | 5.07a | 70.04ab |
| Comparative example 1 | 181.20bc | 3.68b | 5.26a | 63.45b |
| Comparative example 2 | 183.70bc | 3.79b | 5.47a | 58.39bc |
| Comparative example 3 | 182.02bc | 3.69b | 5.24a | 59.18bc |
| Control group | 177.39c | 3.45b | 5.67a | 52.99c |
Remarks: statistical analysis was performed using SPSS 19.0 software, with the same column number identifying that the different letters represent significant differences (P < 0.05).
In Table 4, after the rubber tree discharging regulator provided by the invention is coated on the cut surface of the PR107 variety of the rubber tree, compared with the comparative example and the comparative group, the rubber tree blocking index can be reduced in the examples 1-8, the rubber tree discharging time can be effectively prolonged, the rubber tree discharging initial speed can be improved, the rubber trunk rubber yield can be obviously increased, and especially, the rubber tree discharging time and the dry rubber yield can be improved and the blocking index can be reduced most obviously in the example 1. The rubber discharging regulator provided by the invention can regulate rubber discharging of rubber trees in different rubber tree varieties.
Meanwhile, compared with comparative example 3, the rubber discharging time, the rubber discharging initial speed, the blocking index and the dry rubber yield of the embodiment 1 are obviously different, and in the comparative example 2, potassium chloride is used for replacing potassium iodide, the rubber discharging time, the rubber discharging initial speed and the dry rubber yield of the rubber tree are obviously lower than those of the embodiment 1, the blocking index is obviously higher than those of the embodiment 1, so that the rubber discharging time of the rubber tree is obviously prolonged and the rubber discharging initial speed and the dry rubber yield are improved by adding potassium iodide into the rubber discharging regulator of the rubber tree. Example 1 also increased the gum discharge time and the dry gum yield of the larchunking B compared to comparative example 1, indicating that larchunking B as an active ingredient can increase the gum discharge regulator effect of the rubber tree.
The experimental results of comprehensive test examples 1-4 show that the rubber discharge regulator provided by the invention can regulate rubber discharge of rubber trees in different ages and different rubber tree varieties, and the yield of rubber trunk is obviously improved.
The above description of the specific embodiments of the present invention has been given by way of example only, and the present invention is not limited to the above described specific embodiments. Any equivalent modifications and substitutions for the present invention will occur to those skilled in the art, and are also within the scope of the present invention. Accordingly, equivalent changes and modifications are intended to be included within the scope of the present invention without departing from the spirit and scope thereof.
Claims (11)
1. The rubber tree discharging regulation composition is characterized by comprising the following components of potassium iodide, racecadherin B, polyether modified trisiloxane and carboxymethyl cellulose.
2. The rubber tree discharging regulation composition according to claim 1, wherein the components of the rubber tree discharging regulation composition comprise, by weight, 15000-40000 parts of potassium iodide, 0.004-0.011 parts of lanchunkin B, 300-500 parts of polyether modified trisiloxane and 18000-24000 parts of carboxymethyl cellulose.
3. The rubber tree discharging regulation composition according to claim 2, wherein the components of the rubber tree discharging regulation composition comprise, by weight, 25000-35000 parts of potassium iodide, 0.006-0.010 parts of lanchunkin B, 350-450 parts of polyether modified trisiloxane and 20000-22000 parts of carboxymethyl cellulose.
4. The rubber tree discharging regulation composition according to claim 3, wherein the components of the rubber tree discharging regulation composition comprise, in parts by weight, 30000 parts of potassium iodide, 0.008 parts of labrocolin B, 400 parts of polyether modified trisiloxane and 22000 parts of carboxymethyl cellulose.
5. A rubber tree discharging regulator, which is an aqueous solution of the rubber tree discharging regulating composition according to any one of claims 1 to 4.
6. A process for producing a regulator for rubber tapping according to claim 5, wherein the regulator is obtained by dissolving the largchun B with a small amount of dimethyl sulfoxide and then dissolving all the components in water.
7. Use of the rubber tree discharging regulating composition according to any one of claims 1 to 4 or the rubber tree discharging regulator according to claim 5 for promoting rubber tree discharging.
8. The use according to claim 7, wherein the rubber tree discharging adjusting composition according to any one of claims 1 to 4 or the rubber tree discharging adjusting agent according to claim 5 can prolong the rubber tree discharging time, increase the discharging speed, decrease the emulsion blocking index, and achieve an increase in the latex yield.
9. A method for promoting rubber tree ejection, characterized in that the rubber tree ejection regulating composition according to any one of claims 1 to 4 is dissolved with water to a proper concentration, or the rubber tree ejection regulator according to claim 5 is regulated with water to a proper concentration, so that 1L of water contains 15 to 40g of potassium iodide, 0.004 to 0.0111 mg of labrocoline B, 300 to 500mg of polyether modified trisiloxane and 18 to 24g of carboxymethyl cellulose, and then the mixture is applied to 1.8 to 2.2cm above and below the cut surface of the rubber tree after 22 to 26 hours of ejection stop, and the dosage is 1 to 3 mL/plant.
10. The method according to claim 9, wherein 1L of water contains 25 to 35g of potassium iodide, 0.006 to 0.010mg of labrocolin B, 350 to 450mg of polyether-modified trisiloxane and 20 to 22g of carboxymethyl cellulose after dissolving the rubber tree gum discharging regulator composition according to any one of claims 1 to 4 with water to an appropriate concentration or after regulating the rubber tree gum discharging regulator according to claim 5 with water to an appropriate concentration;
when the coating is applied, the coating is applied to the position of 2cm above and below the rubber tree cutting surface for 24 hours after stopping discharging, and the dosage is 2 mL/plant.
11. The method of claim 10, wherein 1L of water contains 30g potassium iodide, 0.008mg labrocolin B, 400mg polyether modified trisiloxane, and 22g carboxymethyl cellulose.
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| FR628726A (en) * | 1926-12-06 | 1927-10-28 | Protective device for bleeding rubber trees in rainy weather | |
| CN1391803A (en) * | 2002-07-04 | 2003-01-22 | 中国热带农业科学院橡胶栽培研究所 | Rubber production promoter for rubber tree |
| CN1561721A (en) * | 2004-03-19 | 2005-01-12 | 何向东 | Rubber yield promoter for rubber tree |
| CN103130886A (en) * | 2013-03-21 | 2013-06-05 | 中国热带农业科学院橡胶研究所 | Rubber tree aquaporin, and coding gene and application thereof |
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| FR628726A (en) * | 1926-12-06 | 1927-10-28 | Protective device for bleeding rubber trees in rainy weather | |
| CN1391803A (en) * | 2002-07-04 | 2003-01-22 | 中国热带农业科学院橡胶栽培研究所 | Rubber production promoter for rubber tree |
| CN1561721A (en) * | 2004-03-19 | 2005-01-12 | 何向东 | Rubber yield promoter for rubber tree |
| CN103130886A (en) * | 2013-03-21 | 2013-06-05 | 中国热带农业科学院橡胶研究所 | Rubber tree aquaporin, and coding gene and application thereof |
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