CN114766459B - Process for treating root nematode-containing soil of greenhouse by microwaves - Google Patents

Abstract

The application relates to the technical field of soil insecticidal treatment, and particularly discloses a process for treating root nematode-containing soil of a greenhouse by using microwaves, which comprises the steps of ploughing the greenhouse soil with the depth within 250mm, and mixing insect repellent materials while ploughing; laying an insect-trapping material on the ploughed greenhouse soil surface; sterilizing the greenhouse soil by using microwave soil sterilizing equipment; the method is simple to operate, the plowing is beneficial to the movement of the root nematodes, and the ingredients and pungent smell of the insect repellent can further promote the movement of the root nematodes by mixing the insect repellent during plowing; by paving the pest trapping material on the surface of the greenhouse soil, the root nematodes can be effectively attracted to move into the pest trapping material above the soil surface instead of moving into a hard deep layer which is not ploughed, and finally, the greenhouse soil is killed through microwave soil killing equipment, so that the root nematodes in the greenhouse soil can be effectively killed; the killing rate of the root nematodes can reach 100%.

Description

Process for treating root nematode-containing soil of greenhouse by microwaves

Technical Field

The application relates to the technical field of soil insecticidal treatment, in particular to a process for treating root nematode-containing soil in a greenhouse by using microwaves.

Background

The greenhouse is originally special for vegetable planting, and along with the development of social production, the application of the greenhouse is more extensive. At present, the greenhouse is widely applied to potted flower, cut flower cultivation, fruit tree cultivation, forest seedling cultivation, ornamental tree cultivation and the like. When the cultivation period of the greenhouse reaches 3-5 years, the greenhouse is affected by soil-borne diseases, so that the yield and the quality of crops are reduced, the yield of the crops is reduced by 20-40% in the initial period, the damage is more serious with the increase of the cultivation period, and finally 60% of loss or dead cultivated land is caused. And the influence loss of the root-knot nematode in the soil-borne diseases is up to more than 20 percent.

The root nematode, also known as root knot nematode, is an insect of phylum zoon, class nematoda, has a wide host range, can harm more than 130 crops of 39 families, and can survive for one year under the condition of no host. The overground part of the damaged plant grows short and slow, the color of the leaves is abnormal, the fruiting is less, the yield is low, and even the plant dies in advance. The root nematodes are mostly distributed in the soil of 0-20 cm, and especially the number of the nematodes in the soil of 3-9 cm is the largest. Under the conditions that the soil temperature is 25-30 ℃ and the soil humidity is 40-70%, the root nematodes quickly breed, stop moving below 10 ℃ and die 10 minutes at 55 ℃. The chemical agent killing technology has a leading position in soil killing and treating measures in China. However, the use of excessive chemical agents can cause drug resistance of root nematodes, and can also cause adverse effects on biodiversity, food quality, water source quality and the like, thereby causing pesticide pollution problems.

The microwave soil killing technology is an emerging technology in recent years. The microwave is generated by a magnetic wave generator, has strong penetrating power to a plurality of organic matters, non-metallic matters and the like, and can directly act on the inside of an object. The microwave soil killing method is characterized in that the microwave soil killing method utilizes the penetrating function of the microwave soil, acts on soil, is absorbed by the soil and is converted into heat, so that the soil is heated, and the aims of heating, sterilizing and killing insects are achieved. The microwave is used for killing root nematodes in soil, and the method has the advantages of low energy consumption, no pollution, no soil property change and the like. With the development of society and the continuous improvement of the quality of life of people, the requirements of people on food safety and food quality are higher and higher, and the application prospect of replacing chemical agents by the microwave soil killing technology is wider and wider.

In the related technology, the microwave soil killing device irradiates from the soil surface, is difficult to process deep soil areas, has high killing rate on soil shallow layers within 100mm, but has unobvious heating effect and killing effect on deep soil, and the root nematodes are mostly distributed in the soil of 0-20 cm. Therefore, a process for treating root nematode-containing soil in a greenhouse by using microwaves is urgently needed.

Disclosure of Invention

In order to solve the problems that in the related art, the microwave soil killing technology can only effectively kill the soil shallow layer and cannot thoroughly kill the root nematodes in the soil, the application provides a process for treating the root nematode-containing soil of a greenhouse by microwaves.

The application provides a process for treating root nematode-containing soil of a greenhouse by using microwaves, which adopts the following technical scheme:

a process for treating root nematode-containing soil in a greenhouse by using microwaves specifically comprises the following steps:

s1, ploughing greenhouse soil with the depth within 250mm, and mixing the insect repellent while ploughing;

s2, laying an insect-trapping material on the surface of the ploughed greenhouse soil;

s3, sterilizing and killing the greenhouse soil by using microwave soil sterilizing and killing equipment;

the insect repellent comprises the following raw materials in parts by weight: 5-10 parts of tripterygium wilfordii, 5-10 parts of rangooncreeper fruit, 5-12 parts of garlic, 5-12 parts of onion, 3-8 parts of pepper, 2-5 parts of xanthan gum, 22-40 parts of corn starch and 80-150 parts of water;

the insect attractant comprises the following raw materials in parts by weight: 20-30 parts of marigold, 20-30 parts of astragalus sinicus, 20-30 parts of vegetable root, 15-40 parts of sepiolite, 18-25 parts of bentonite, 12-18 parts of citric acid, 800-1000 parts of sandy soil and 150-300 parts of water.

By adopting the technical scheme, the plowing is beneficial to the movement of the root nematodes, and the ingredients and pungent smell of the insect-repellent material can further promote the movement of the root nematodes by mixing the insect-repellent material during plowing; by paving the pest trapping material on the surface of the greenhouse soil, the root nematodes can be effectively attracted to move into the pest trapping material above the soil surface instead of moving into a hard deep layer which is not ploughed, and finally, the greenhouse soil is killed through microwave soil killing equipment, so that the root nematodes in the greenhouse soil can be effectively killed; the method is simple to operate, the killing rate of the root nematodes can reach 100%, and the added anthelmintic material can be finally converted into a fertilizer to act on the soil, so that the soil fertility is improved; the insect trapping material can be finally mixed in soil and can also be recycled for reuse.

Preferably, the mixing amount of the insect repellent in the step S1 is 30-50 jin/mu.

Through adopting above-mentioned technical scheme, the aforesaid is mixed the volume and can be played the effect of effectively driving the root nematode, can also realize final conversion simultaneously, improves soil fertility, and the expelling parasite effect is best, and economic benefits is the highest.

Preferably, the laying thickness of the insect-trapping material in the step S2 is 10-50mm.

By adopting the technical scheme, the insect-trapping material with the thickness can well attract root nematodes and is suitable for the root nematodes to stay.

Preferably, the microwave killing parameters in step S3 are: setting microwave power at 80-200W and frequency at 500-800MHz for pretreatment for 30-50min, setting microwave power at 800-1200W and frequency at 2200-2600MHz, and treating for at least 8min.

Through adopting above-mentioned technical scheme, set up low-power, low-frequency earlier and carry out the preliminary treatment to big-arch shelter soil, slowly improve soil surface temperature, further promote the root nematode to remove to soil surface and lure in the worm material, then set up high power, high-frequency and carry out final killing to the root nematode and handle, the root nematode is exterminateed thoroughly, and soil disappears and kills effectually.

Preferably, the insect repellent comprises the following raw materials in parts by weight: 6-8 parts of centella asiatica, 6-8 parts of rangooncreeper fruit, 6-10 parts of garlic, 6-10 parts of onion, 4-7 parts of pepper, 3-4 parts of xanthan gum, 25-35 parts of corn starch and 100-140 parts of water.

Preferably, the insect repellent comprises the following raw materials in parts by weight: 7 parts of tripterygium wilfordii, 7 parts of rangooncreeper fruit, 8 parts of garlic, 8 parts of onion, 5 parts of pepper, 3.5 parts of xanthan gum, 30 parts of corn starch and 120 parts of water.

Preferably, the insect repellent is prepared by the following method:

(1) Mixing Tripterygium wilfordii, fructus quisqualis, bulbus Allii Cepae and fructus Zanthoxyli, pulverizing, decocting in water, extracting volatile oil, decoction and residue;

(2) And (3) stirring and mixing the filter residue and the corn starch, adding the filtrate, continuously stirring and mixing, finally adding the xanthan gum and the volatile oil, stirring and mixing uniformly, and granulating to obtain the insect repellent material.

By adopting the technical scheme, the insect repellent material has the advantages that the insect repellent material is selected by priority in parts by weight, and the insect repellent effect can be further improved; mixing Tripterygium wilfordii, fructus quisqualis, bulbus Allii Cepae and fructus Zanthoxyli, pulverizing, decocting in water, and mixing with corn starch and xanthan gum to obtain insect repellent; the insect repelling material is simple in preparation method and good in insect repelling effect, the corn starch and the xanthan gum are added to promote the forming of the insect repelling material and the stable release of the insect repelling effect, the viscosity of greenhouse soil can be further improved, the soil environment which is not favored by root nematodes is further created, and the insect repelling effect is promoted.

Preferably, the insect attractant comprises the following raw materials in parts by weight: 22-28 parts of marigold, 22-28 parts of astragalus sinicus, 22-28 parts of vegetable root, 20-36 parts of sepiolite, 20-24 parts of bentonite, 14-16 parts of citric acid, 850-950 parts of sandy soil and 180-260 parts of water.

Preferably, the insect attractant comprises the following raw materials in parts by weight: 25 parts of marigold, 25 parts of astragalus sinicus, 25 parts of vegetable root, 28 parts of sepiolite, 22 parts of bentonite, 15 parts of citric acid, 900 parts of sandy soil and 220 parts of water.

Preferably, the insect trap material is prepared by the following method:

(1) Pulverizing flos Tagetis Erectae, herba astragali Melilotoidis and vegetable root, adding water, and grinding to obtain mixed juice;

(2) Adding sepiolite and bentonite into the mixed juice, stirring and dispersing uniformly, and adding citric acid to adjust the pH value to obtain a mixture;

(3) And adding the mixture into sandy soil, and stirring and mixing uniformly to obtain the required insect trapping material.

By adopting the technical scheme, the insect-trapping material has the advantages that the insect-trapping material is preferred in weight parts, so that the insect-trapping effect can be further improved; marigold, milk vetch and vegetable root are ground by adding water to obtain mixed juice, sepiolite and bentonite are used for adsorbing the mixed juice, and sandy soil is added for stirring, so that the softness of the insect-attracting material can be effectively guaranteed, and the insect-attracting effect is remarkable.

In summary, the present application has the following beneficial effects:

the application provides a process for treating soil containing root nematodes in a greenhouse by using microwaves, which adopts a method of turning over and mixing insect-repelling materials, creates a soil environment which is not suitable for the survival of the root nematodes, can attract the root nematodes to gather into the insect-attracting materials on the soil surface of the greenhouse by paving the insect-attracting materials which have the effect of attracting the root nematodes and are suitable for the survival of the root nematodes on the soil surface of the greenhouse, and finally kills the root nematodes by using microwave soil killing equipment.

Detailed Description

The present application will be described in further detail with reference to examples.

Preparation examples 1-5 provide methods for preparing an insect repellent, and the following description will be given by taking preparation example 1 as an example.

Preparation example 1

The insect repellent comprises the following raw materials by weight: 5Kg of tripterygium wilfordii, 7Kg of rangoon creeper, 6Kg of garlic, 5Kg of onion, 4Kg of pepper, 2Kg of xanthan gum, 25Kg of corn starch and 80Kg of water;

the insect repellent material is prepared by the following method:

(1) Mixing Tripterygium wilfordii, fructus quisqualis, bulbus Allii Cepae and fructus Zanthoxyli, pulverizing to obtain mixed powder with particle size of 30 meshes, decocting in water for 12 hr, and extracting volatile oil, decoction and residue;

(2) Mixing the filter residue and corn starch, adding the filtrate, stirring and mixing at 65 deg.C for 2 hr, adding xanthan gum and volatile oil, stirring and mixing, and granulating to obtain the final product.

Preparation examples 2 to 5, the same as preparation example 1, except that: the raw material dosage and the process parameters in the preparation process are different, and the details are shown in table 1.

Table 1:

raw material	Preparation example 1	Preparation example 2	Preparation example 3	Preparation example 4	Preparation example 5
						Raltivate	5Kg	8Kg	7Kg	9Kg	10Kg
Fructus quisqualis	7Kg	5Kg	7Kg	8Kg	10Kg
						Garlic	6Kg	6Kg	8Kg	10Kg	12Kg
Onion (onion)	5Kg	6Kg	8Kg	8Kg	12Kg
						Chinese prickly ash	4Kg	3Kg	5Kg	5Kg	8Kg
Xanthan gum	2Kg	3Kg	3.5Kg	4Kg	5Kg
						Corn starch	25Kg	22Kg	30Kg	34Kg	40Kg
Water (I)	80Kg	100Kg	120Kg	130Kg	150Kg
						Process parameters	Preparation example 1	Preparation example 2	Preparation example 3	Preparation example 4	Preparation example 5
Particle size of mixed powder	30 mesh	50 mesh	60 mesh screen	80 mesh	100 mesh
						Cooking time	12h	11h	10h	9h	8h
Stirring and mixing temperature	65℃	68℃	70℃	72℃	75℃
						Stirring and mixing time	2h	1.8h	1.5h	1.2h	1h

Preparation examples 6 to 10 provide methods for preparing insect-attracting substances, and the following description will take preparation example 6 as an example.

Preparation example 6

The insect trapping material comprises the following raw materials by weight: 20Kg of marigold, 22Kg of milk vetch, 22Kg of vegetable root, 15Kg of sepiolite, 18Kg of bentonite, 12Kg of citric acid, 800Kg of sandy soil and 150Kg of water;

the insect trapping material is prepared by the following method:

(1) Pulverizing flos Tagetis Erectae, herba astragali Melilotoidis and vegetable root, adding water, heating to 50-70 deg.C, maintaining the temperature, and grinding for 1-3 hr to obtain mixed juice;

(2) Adding sepiolite and bentonite into the mixed juice, stirring and dispersing uniformly, and adding citric acid to adjust the pH value to obtain a mixture;

(3) Adding the mixture into sandy soil, stirring and mixing, and spraying water during stirring to control the humidity of the sandy soil to be 45-65% so as to obtain the required insect-trapping material.

Preparation examples 7 to 10, the same as preparation example 6, were different only in that: the raw material dosage and the process parameters in the preparation process are different, and are specifically shown in table 2.

Table 2:

raw material	Preparation example 6	Preparation example 7	Preparation example 8	Preparation example 9	Preparation example 10
						Marigold	20Kg	22Kg	25Kg	26Kg	30Kg
Astragalus sinicus (lour.) Merr	22Kg	22Kg	25Kg	28Kg	30Kg
						Vegetable root	22Kg	20Kg	25Kg	26Kg	30Kg
Sepiolite	15Kg	22Kg	28Kg	34Kg	40Kg
						Bentonite clay	18Kg	20Kg	22Kg	23Kg	25Kg
Citric acid	12Kg	14Kg	15Kg	16Kg	18Kg
						Sand soil	800Kg	850Kg	900Kg	950Kg	1000Kg
Water (W)	150Kg	180Kg	220Kg	260Kg	300Kg
						Process parameters	Preparation example 6	Preparation example 7	Preparation example 8	Preparation example 9	Preparation example 10
Grinding temperature	50℃	55℃	60℃	65℃	70℃
						Grinding time	3h	2.5h	2h	1.5h	1h
Humidity of sandy soil	45%	50%	55%	60%	65%

Examples 1-5 provide a process for treating root nematode-containing soil in a greenhouse by using microwaves, and the process is described below by taking example 1 as an example.

Example 1

A process for treating root nematode-containing soil of a greenhouse by microwaves specifically comprises the following steps:

s1, ploughing greenhouse soil with the depth of 245mm from the surface of the greenhouse soil, and mixing the insect repellent prepared in the preparation example 1 while ploughing, wherein the mixing amount of the insect repellent is controlled to be 50 jin/mu;

s2, laying the insect trapping material prepared in the preparation example 6 on the surface of the ploughed greenhouse soil, and controlling the laying thickness of the insect trapping material to be 50mm;

and S3, killing the greenhouse soil by using microwave soil killing equipment, firstly setting the microwave power to be 200W and the frequency to be 800MHz, pretreating for 30min, then setting the microwave power to be 1200W and the frequency to be 2800MHz, finally treating for 8min, and recovering the insect trapping material after the treatment is finished.

Examples 2-5, like example 1, differ only in that: the specific process parameters in the treatment process are different, and are shown in table 3.

Table 3:

process parameters	Example 1	Example 2	Example 3	Example 4	Example 5
						Depth of ploughing soil	245mm	240mm	235mm	230mm	225mm
Selection of insect repellent	Preparation example 1	Preparation example 2	Preparation example 3	Preparation example 4	Preparation example 5
						Mixing amount of insect repellent	50 jin/mu	45 jin/mu	40 jin/mu	35 jin/mu	30 jin/mu
Selection of attractant	Preparation example 6	Preparation example 7	Preparation example 8	Preparation example 9	Preparation example 10
						Thickness of insect-trapping material	50mm	40mm	30mm	20mm	10mm
Microwave pretreatment power	200W	170W	140W	110W	80W
						Frequency of microwave pretreatment	800MHz	700MHz	650MHz	600MHz	500MHz
Microwave pretreatment time	30min	35min	40min	45min	50min
						Microwave final treatment power	1200W	1100W	1000W	900W	800W
Frequency of microwave final treatment	2800MHz	2700MHz	2600MHz	2500MHz	2400MHz
						Microwave end treatment time	8	9	10	11	12

In order to verify the killing effect of root nematodes and the influence on soil treatment in the process for treating the soil containing the root nematodes in the greenhouse by using microwaves, the applicant sets comparative examples 1 to 6, wherein:

comparative example 1, like example 3, differs only in that: no insect repellent is added in the soil plowing process.

Comparative example 2, like example 3, differs only in that: in the soil turning process, the insect repellent material prepared in the preparation example 3 is replaced by the insect repellent material A prepared by the following method, 5Kg of tripterygium wilfordii, 7Kg of rangooncreeper fruit, 6Kg of garlic, 5Kg of onion and 4Kg of pepper are mixed and crushed to obtain mixed powder with the particle size of 30 meshes, 80Kg of water is added for cooking for 12 hours, volatile oil, cooking liquor and filter residues are extracted, and the volatile oil, the cooking liquor and the filter residues are stirred and mixed uniformly to obtain the insect repellent material A.

Comparative example 3, like example 3, differs only in that: no insect-trapping material is laid on the surface of the greenhouse soil.

Comparative example 4, like example 3, differs only in that: the insect attractant prepared in preparation example 8 was replaced with sandy soil with a humidity of 55%.

Comparative example 5, like example 3, differs only in that: replacing the insect attractant prepared in the preparation example 8 with an insect attractant B prepared by the following method, crushing 20Kg of marigold, 22Kg of milk vetch and 22Kg of vegetable root, adding 150Kg of water, heating to 50-70 ℃, preserving heat and grinding for 1-3h to obtain mixed juice; and adding the mixed juice into 800Kg of sandy soil, stirring and mixing, and spraying water in the stirring process to control the humidity of the sandy soil to be 55 percent so as to obtain the required insect attractant B.

Comparative example 6, like example 3, differs only in that: when the microwave soil killing equipment is used for killing the greenhouse soil, the microwave pretreatment process is omitted.

Dividing 12 pieces of greenhouse soil of a vegetable base cultivated for 3 years at random, recording the divided pieces of greenhouse soil as an experimental ground 1-11 and a comparison ground 1, respectively treating the greenhouse soil experimental ground 1-11 of the vegetable base by adopting the process for treating root nematode-containing soil of a greenhouse provided in the application in the examples 1-5 and the comparative examples 1-6 (wherein the experimental ground 1-5 is treated in the examples 1-5, the experimental ground 6-11 is treated in the comparative examples 1-6), and performing blank comparison on the comparison ground 1; and planting tomatoes in the treated experimental land, recording the killing rate of root nematodes and the yield increase rate of the planted tomatoes, and obtaining the results shown in table 4.

Table 4:

experiment ground	Root nematode kill/%)	Yield increase rate/%)
			Experimental site 1	100	43.8
Experimental site 2	100	46.1
			Experiment ground 3	100	49.3
Experimental site 4	100	47.8
			Experiment ground 5	100	45.9
Experiment site 6	80.7	14.3
			Experiment ground 7	88.6	22.5
Experiment ground 8	77.1	18.9
			Experimental ground 9	83.3	24.0
Experiment ground 10	91.0	33.4
			Experiment ground 11	93.5	38.8
Comparison ground 1	/	-18.7

The results shown in Table 4 show that: the greenhouse soil treated by the process for treating the root nematode-containing soil in the greenhouse by using the microwaves provided by the embodiments 1 to 5 can achieve the root nematode killing rate of 100 percent, and the greenhouse soil treated by operations such as plowing, mixing with insect repellents and the like can achieve the current yield increase effect by planting tomatoes again; the killing rate of the greenhouse soil root nematodes treated by the comparative examples 1-6 can not reach 100%, the yield increasing effect of the tomatoes is far lower than that of the tomatoes in the examples 1-5, and the control field 1 which is not treated at all is directly used for planting the tomatoes, so that the yield of the tomatoes is obviously reduced compared with the tomatoes in the last year.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (10)

1. A process for treating root nematode-containing soil of a greenhouse by microwaves is characterized by comprising the following steps:

s1, ploughing greenhouse soil with the depth within 250mm, and mixing the insect repellent while ploughing;

s2, laying an insect trapping material on the surface of the turned greenhouse soil;

s3, sterilizing and killing the greenhouse soil by using microwave soil sterilizing and killing equipment;

the insect repellent comprises the following raw materials in parts by weight: 5-10 parts of tripterygium wilfordii, 5-10 parts of rangooncreeper fruit, 5-12 parts of garlic, 5-12 parts of onion, 3-8 parts of pepper, 2-5 parts of xanthan gum, 22-40 parts of corn starch and 80-150 parts of water;

the insect attractant comprises the following raw materials in parts by weight: 20-30 parts of marigold, 20-30 parts of astragalus sinicus, 20-30 parts of vegetable root, 15-40 parts of sepiolite, 18-25 parts of bentonite, 12-18 parts of citric acid, 800-1000 parts of sandy soil and 150-300 parts of water.

2. The process for treating the root nematode-containing soil of the greenhouse as claimed in claim 1, wherein the mixing amount of the insect-repellent material in the step S1 is 30-50 jin/mu.

3. The process for treating root nematode-containing soil of a greenhouse according to claim 1, wherein the laying thickness of the pest trapping material in the step S2 is 10-50mm.

4. The process for microwave treatment of root nematode-containing soil in greenhouses according to claim 1, wherein the microwave killing treatment parameters in the step S3 are as follows: setting microwave power at 80-200W and frequency at 500-800MHz for pretreatment for 30-50min, and setting microwave power at 800-1200W and frequency at 2400-2800MHz for final treatment not less than 8min.

5. The process for treating root nematode-containing soil of a greenhouse according to claim 1, wherein the insect repellent comprises the following raw materials in parts by weight: 6-8 parts of centella asiatica, 6-8 parts of rangooncreeper fruit, 6-10 parts of garlic, 6-10 parts of onion, 4-7 parts of pepper, 3-4 parts of xanthan gum, 25-35 parts of corn starch and 100-140 parts of water.

6. The process for treating root nematode-containing soil of a greenhouse of claim 5, wherein the insect repellent comprises the following raw materials in parts by weight: 7 parts of Tripterygium wilfordii, 7 parts of rangooncreeper fruit, 8 parts of garlic, 8 parts of onion, 5 parts of pepper, 3.5 parts of xanthan gum, 30 parts of corn starch and 120 parts of water.

7. The process for treating root nematode-containing soil of a greenhouse according to claim 1, wherein the insect repellent material is prepared by the following method:

(1) Mixing Tripterygium wilfordii, fructus quisqualis, bulbus Allii Cepae and fructus Zanthoxyli, pulverizing, decocting in water, extracting volatile oil, decoction and residue;

(2) And stirring and mixing the filter residue and the corn starch, adding the filtrate, continuously stirring and mixing, finally adding the xanthan gum and the volatile oil, stirring and mixing uniformly, and granulating to obtain the insect repellent.

8. The process for treating root nematode-containing soil of a greenhouse according to claim 1, wherein the pest trapping material comprises the following raw materials in parts by weight: 22-28 parts of marigold, 22-28 parts of astragalus sinicus, 22-28 parts of vegetable root, 20-36 parts of sepiolite, 20-24 parts of bentonite, 14-16 parts of citric acid, 850-950 parts of sandy soil and 180-260 parts of water.

9. The process for treating root nematode-containing soil of a greenhouse according to claim 1, wherein the pest trapping material comprises the following raw materials in parts by weight: 25 parts of marigold, 25 parts of astragalus sinicus, 25 parts of vegetable root, 28 parts of sepiolite, 22 parts of bentonite, 15 parts of citric acid, 900 parts of sandy soil and 220 parts of water.

10. The process for treating root nematode-containing soil of a greenhouse according to claim 1, wherein the pest trapping material is prepared by the following method:

(1) Pulverizing flos Tagetis Erectae, herba astragali Melilotoidis and vegetable root, adding water, and grinding to obtain mixed juice;

(2) Adding sepiolite and bentonite into the mixed juice, stirring and dispersing uniformly, and adding citric acid to adjust the pH value to obtain a mixture;

(3) And adding the mixture into sandy soil, and stirring and mixing uniformly to obtain the required insect trapping material.