CN114766459A - 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 surface of the ploughed greenhouse soil; killing the greenhouse soil by using microwave soil killing 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 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 hard deep layers which are not ploughed, and finally the greenhouse soil is killed through the 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 originally is special for vegetable planting, and along with the development of social production, the application of the greenhouse is more extensive. The current greenhouse has been 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 generally, 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 stage, the damage is more serious with the increase of the cultivation period, and finally 60% of loss or dead cultivated land is caused. The influence loss of the root-knot nematode in the soil-borne diseases reaches more than 20 percent.

Root nematodes, also known as root knot nematodes, are insects of the phylum zoophylum, class nematoda with a wide host range that can harm more than 130 crops of the 39 family and survive for one year without hosts. 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 disinfection technology plays a leading role in soil disinfection and treatment measures in China. However, 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.

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 texture 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 technology, the microwave soil killing technology can only effectively kill soil shallow layers and cannot thoroughly kill root nematodes in the soil, the application provides a process for treating root nematode-containing soil in 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 the 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 plowed greenhouse soil;

s3, killing the greenhouse soil by using microwave soil 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 trapping material 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, 1000 parts of sandy soil and 150 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 hard deep layers which are not ploughed, and finally the greenhouse soil is killed through the 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 insect repellent 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 above-mentioned volume of mixing can play the effect of effectively driving away 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 10-50 mm.

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

Preferably, the microwave killing parameters in step S3 are: firstly setting the microwave power to be 80-200W, the frequency to be 500-800MHz, pretreating for 30-50min, then setting the microwave power to be 800-1200W, the frequency to be 2200-2600MHz, and finally treating for not less than 8 min.

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 move to soil surface and lure in the worm material, then set up high power, high-frequency and carry out final killing treatment to the root nematode, the root nematode is exterminateed thoroughly, and soil killing effect is good.

Preferably, the insect repellent comprises the following raw materials in parts by weight: 6-8 parts of Tripterygium wilfordii, 6-8 parts of quisqualis indica, 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 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 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.

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 roots, 20-36 parts of sepiolite, 20-24 parts of bentonite, 14-16 parts of citric acid, 850 parts of sandy soil and 950 parts of water and 260 parts of sand.

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 raw materials are selected preferentially in parts by weight, so that the insect-trapping effect can be further improved; the marigold, the milk vetch and the vegetable root are ground by adding water to obtain mixed juice, and the sepiolite and the bentonite are used for adsorbing the mixed juice, and then the sandy soil is added for stirring, so that the softness of the insect-trapping material can be effectively ensured, and the insect-trapping effect is remarkable.

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

the application provides a process for treating root nematode-containing soil in a greenhouse by using microwaves, a method for turning over and mixing with mixed insect repellent materials is adopted to create a soil environment which is not suitable for the survival of the root nematodes, the root nematodes can be induced to gather in the insect repellent materials on the soil surface of the greenhouse by paving the insect repellent materials which have the effect of inducing the root nematodes and are suitable for the survival of the root nematodes on the soil surface of the greenhouse, and finally the root nematodes are killed by 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
Quisqualis indica	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 (W)	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 screen	60 mesh screen	80 mesh	100 mesh
						Time of cooking	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 attractants, and the following description will be given by taking 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, like preparation example 6, differ only in that: the raw material dosage and 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 following example is given 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-repelling material prepared in the preparation example 1 while ploughing, wherein the mixing amount of the insect-repelling material is controlled to be 50 jin/mu;

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

s3, killing the greenhouse soil by using microwave soil killing equipment, pre-treating for 30min by setting the microwave power to 200W and the frequency to 800MHz, then setting the microwave power to 1200W and the frequency to 2800MHz, finally treating for 8min, and recovering the insect trapping material after finishing treatment.

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 the 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 processing 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, 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 residue are extracted, and the volatile oil, the cooking liquor and the filter residue are stirred and mixed uniformly to obtain the insect repellent material A.

Comparative example 3, the same as example 3, except 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 during stirring to control the humidity of the sandy soil to be 55% 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 into experiment lands 1-11 and a comparison land 1, and respectively treating the greenhouse soil experiment lands 1-11 of the vegetable base by adopting the process for treating the root nematode-containing soil of the greenhouse provided in the examples 1-5 and the comparative examples 1-6 (wherein the experiment lands 1-5 are treated in the examples 1-5, the experiment lands 6-11 are treated in the comparative examples 1-6), and blank comparison is carried out on the comparison land 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
			Experimental 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
			Experiment ground 9	83.3	24.0
Experimental ground 10	91.0	33.4
			Experiment ground 11	93.5	38.8
Comparison 1	/	-18.7

The results shown in Table 4 show that: the root nematode killing rate of 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 reach 100 percent, and the current yield increasing effect can be achieved by planting tomatoes in the greenhouse soil treated by operations such as plowing, mixing with insect-repelling materials and the like; 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 specific embodiments are only for explaining the present application and are not limiting to the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments 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, plowing the greenhouse soil with the depth within 250mm, and mixing the insect repellent while plowing;

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

s3, killing the greenhouse soil by using microwave soil 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 trapping material 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, 1000 parts of sandy soil and 300 parts of 150 parts of water.

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

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

4. The process for treating root nematode-containing soil in a greenhouse by using microwaves as claimed in claim 1, wherein the microwave killing treatment parameters in the step S3 are as follows: firstly setting the microwave power at 80-200W and the frequency at 500-800MHz, pretreating for 30-50min, then setting the microwave power at 800-1200W and the frequency at 2400-2800MHz, and finally not less than 8 min.

5. The process for treating root nematode-containing soil of a greenhouse as claimed in claim 1, wherein the insect-repellent material comprises the following raw materials in parts by weight: 6-8 parts of Tripterygium wilfordii, 6-8 parts of quisqualis indica, 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 140 parts of water.

6. The process for treating root nematode-containing soil of a greenhouse as claimed in claim 5, wherein the insect-repellent material 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 roots, 20-36 parts of sepiolite, 20-24 parts of bentonite, 14-16 parts of citric acid, 850 parts of sandy soil and 950 parts of water and 260 parts of sand.

9. The process for treating root nematode-containing soil of a greenhouse as claimed in 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.