CN113243268A

CN113243268A - Comprehensive weed control method in radix bupleuri planting

Info

Publication number: CN113243268A
Application number: CN202110567389.8A
Authority: CN
Inventors: 李念祖; 杨迎春; 姚玉玲; 李云飞; 杨昊; 郭芷均; 彭慧雯; 费甫华
Original assignee: YICHANG ACADEMY OF AGRICULTURAL SCIENCE; Pingcun Zhongying Hubei Pharmaceutical Co ltd
Current assignee: YICHANG ACADEMY OF AGRICULTURAL SCIENCE; Pingcun Zhongying Hubei Pharmaceutical Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-08-13

Abstract

The invention discloses a comprehensive weed control method in bupleurum planting, which comprises the following steps: before planting and sowing the radix bupleuri, utilizing a rotary cultivator to turn over soil, weeding by turning over, and spraying a sealing agent after planting and sowing the radix bupleuri; after the radix bupleuri is sprayed with the sealant, compartment surface covering is carried out; before the bupleurum seeds are not germinated, spraying the prometryn wettable powder for 1 time when the weeds in the field are more, wherein the application amount of the prometryn wettable powder per 667 square meter is 8-20 g; after all the bupleurum seedlings emerge, observing weeds in the field: when large-scale monocotyledonous weeds appear, 2-8 ml of high-efficiency haloxyfop-methyl emulsifiable concentrate is applied to every 667 square meters; when mixed monocotyledonous and dicotyledonous weeds appear, when the radix bupleuri grows to 4-leaf period or the plant height is more than or equal to 8cm, 4-15 ml of oxyfluorfen emulsifiable concentrate is sprayed every 667 square meters, and then 3-10 ml of high-efficiency haloxyfop emulsifiable concentrate is sprayed. The weed prevention and control effect of the invention reaches 90 percent, the yield of bupleurum can be improved by 20 percent, and only 2 working hours are needed.

Description

Comprehensive weed control method in radix bupleuri planting

Technical Field

The invention relates to the technical field of agricultural planting, in particular to a comprehensive weed control method in bupleurum planting.

Background

The bupleurum is one of the large Chinese medicinal material varieties in China, the medicinal part is the dry root of bupleurum or bupleurum stenophyllum of Umbelliferae, the main component is saikoside, and the bupleurum contains phytosterol, adonitol, a small amount of volatile oil and polysaccharide, and has the effects of easing pain, relieving fever, relieving cough, resisting inflammation, resisting pathogens, resisting ulcer and the like. The bupleurum is found in most areas of China, the areas of Henan, Hebei, Shaanxi, Shanxi, Gansu, inner Mongolia, Qinghai, Xinjiang and the like are taken as main distribution areas, and the bupleurum angustifolium is distributed in the areas of northeast China, North China, northwest China, east China, China and the like.

In 2020, relevant market data show that the required amount of radix bupleuri rises to 1 million tons, the annual planting area is 80 million mu, the total yield is 8000 tons, and the current gap amount reaches 2000 tons. Hubei has proper climate, the produced bupleurum has good quality, and becomes a new growing zone for the development of bupleurum, and the local market demands about 3 ten thousand mu of planting quantity. However, the current planting area of bupleurum chinense in Hubei province is only 1 ten thousand mu, which is far away from the market expectation, and one of the core factors causing low planting activity is difficult weed prevention and control. In Hubei, the growth of the bupleurum in the seedling stage is slow due to long sprouting period, so that weeds in the field grow, the labor input is increased, the yield benefit is reduced, and the wide popularization of the bupleurum planting is restricted.

Disclosure of Invention

In order to solve the technical problems, the invention provides a comprehensive weed control method in bupleurum planting.

The technical scheme adopted by the invention is as follows:

a method for comprehensively controlling weeds in bupleurum planting comprises the following steps:

1) soil plowing: before the bupleurum is planted and sowed, a rotary cultivator is used for ploughing the soil, and weeding is carried out through ploughing.

2) Sealing after seeding: spraying a sealing agent after the planting and scattering of the radix bupleuri are finished;

3) covering the compartment surface: after the radix bupleuri is sprayed with the sealant, compartment surface covering is carried out;

4) pre-emergence weed management: before the bupleurum seeds are not germinated, spraying prometryn wettable powder when the weeds in the field are more;

5) managing weeds after seedling of radix bupleuri;

the comprehensive weed control in the bupleurum planting is completed.

Preferably, in the step 2), the sealing agent is sprayed for 2 times, the sealing agent is 33% pendimethalin emulsifiable concentrate for the first time, and 40-60 ml of the sealing agent is applied to every 667 square meters; and after the first spraying is finished, 60-100 ml of 48% trifluralin emulsifiable concentrate is sprayed every 667 square meters.

Preferably, in the step 3), the covering thickness is 1-2 cm, and crop straws or processing byproducts including straws, crushed straws, chaffs, rotten silage grass or the like can be selected for covering.

Preferably, in the step 4), before the radix bupleuri seeds do not germinate, when the weeds in the field are more, the prometryn wettable powder is sprayed for 1 time, and the application amount of the prometryn wettable powder is 8-20 g per 667 square meter, namely the application amount of the 40% prometryn wettable powder is 20-50 g.

Preferably, in the step 5), after all the bupleurum roots emerge, observing weeds in the field: when large-scale monocotyledonous weeds appear, 20-70 ml of high-efficiency haloxyfop-methyl emulsifiable concentrate with the concentration of 10-11 percent is applied to every 667 square meters; when mixed monocotyledonous and dicotyledonous weeds appear, when the radix bupleuri grows to 4-leaf period or the plant height is more than or equal to 8cm, 20-22% of oxyfluorfen emulsifiable concentrate is sprayed for every 667 square meter, and then 20-70 ml of 10-11% of high-efficiency haloxyfop emulsifiable concentrate is sprayed, and the two can not be mixed for application.

Further preferably, in the step 5), after all the bupleurum roots emerge, observing weeds in the field: when large-scale monocotyledonous weeds appear, 20-70 ml of high-efficiency haloxyfop-methyl emulsifiable concentrate with the concentration of 10.8 percent is applied to every 667 square meters; when mixed monocotyledonous and dicotyledonous weeds appear, when the radix bupleuri grows to 4-leaf period or the plant height is more than or equal to 8cm, 20-70 ml of 21 percent oxyfluorfen emulsifiable concentrate is sprayed every 667 square meter, and then 20-70 ml of 10.8 percent high-efficiency haloxyfop emulsifiable concentrate is sprayed, and the two can not be mixed for application.

Preferably, in the implementation of the method, the sowing quantity of the radix bupleuri is controlled to be 1-2.5 kilograms per 667 square meter, and the number of the effective seedlings in the radix bupleuri field is controlled to be 2-4 thousands of plants.

Preferably, the method is used in the process of interplanting bupleurum among young citrus.

Further preferably, the process for interplanting bupleurum in young citrus comprises the following steps:

s1, garden selection;

s2, selecting varieties of radix bupleuri;

s3, arranging crops for rotation: the sowing period of the radix bupleuri is autumn, and the sowing method is direct sowing;

s4, land preparation and fertilization: the cultivation compartment surface of young citrus is turned by a small rotary cultivator or a mini-tiller, a ternary compound fertilizer (N: P: K is 15:15:15) and a commercial organic fertilizer (the content of organic matters is more than or equal to 45 percent, and the NPK is more than or equal to 6 percent) are applied as base fertilizers every 667 square meters, and the application ratio is 1: 3. The organic fertilizer can also be replaced by decomposed farmyard manure, and the using amount of the organic fertilizer is 5-10 times of that of the commercial organic fertilizer;

s5, radix bupleuri seeding quantity and seeding post-treatment: the radius range of 0.5m of the citrus plants is not sown with the bupleurum seeds, other lands in the compartment surface are uniformly sown with the bupleurum seeds, 1-2.5 kg of the bupleurum seeds are sown every 667 square meters, and after the bupleurum is sown, the comprehensive weed control is carried out;

s6, interplanting field management: the seedling emergence period of the bupleurum is long, and the pruning shaping and the top dressing of young citrus seedlings are mainly enhanced after the bupleurum is sowed;

s7, harvesting radix bupleuri: harvesting plants after 10 months in the next year after the plants begin to wither, cutting off overground parts by a sickle or a machine, mechanically or manually digging roots, drying in the sun, shaking off soil, removing stems and leaves, and drying in the sun to obtain;

and (5) interplanting the radix bupleuri in young citrus.

Still further preferably, said s1. round selects: selecting a field block which is suitable for small mechanical tillage and good in water-draining property in the young orange interplanting garden, wherein the age of the orange is preferably 1-3 years;

s2, selecting the variety of the radix bupleuri: selecting annual Bupleurum species including Bupleurum falcatum or others;

s4, land preparation and fertilization: turning and leveling the cultivation compartment surface of young citrus by using a small rotary cultivator or a mini-tiller, and applying 40-50 kg of ternary compound fertilizer (N: P: K is 15:15:15) and 120-150 kg of commercial organic fertilizer (the content of organic matters is more than or equal to 45 percent and the NPK is more than or equal to 6 percent) to every 667 square meters;

s5, radix bupleuri seeding quantity and seeding post-treatment: the radius range of 0.5m of the citrus plants is not sown with the bupleurum seeds, other lands in the compartment surface are uniformly sown with the bupleurum seeds, 1-2.5 kg of the bupleurum seeds are sown every 667 square meters, and after the bupleurum is sown, the comprehensive weed control is carried out.

Still further preferably, the S6 interplanting field management comprises: the seedling emergence period of the bupleurum is long, and the pruning shaping and the top dressing of young citrus seedlings are mainly enhanced after the bupleurum is sowed;

annual radix bupleuri generally emerges in the middle and last ten days of 12 months, and low temperature in the later period has no influence on radix bupleuri seedlings; after the seedlings of the radix bupleuri emerge in 4 months in the next year, when the radix bupleuri grows to 4-5 leaf periods, performing field topdressing and weed control, wherein 50 parts of ternary compound fertilizer (N: P: K: 15:15) and 50 parts of urea are applied to every 667 square meters, namely 5-10 kg of ternary compound fertilizer and 5-10 kg of urea;

after the radix bupleuri grows and is sealed, the field management focuses on pest control and plant regulation; and (3) after the radix bupleuri enters the bud period, topping for the first time, wherein the reserved height of the radix bupleuri after topping is 20-25 cm. When the plant height is more than or equal to 40cm, topping again, and strictly controlling the occurrence of the flowering and bolting phenomena of the bupleurum.

The invention has the beneficial effects that:

1. the weed prevention and control effect reaches 90%: in the technology of the invention, the physical and chemical prevention and control can meet the weed control of the bupleurum in different growth periods, and compared with the existing related documents, the prevention and control efficiency of the prevention and control method can be improved to 90 percent, the field weeds can be effectively reduced, and the method is a space for releasing the growth of the bupleurum. Compared with the prior planting technical system, the prior weed prevention and control can improve the yield of the radix bupleuri by 20 percent, namely increasing the yield of fresh goods by 20 kilograms per square meter 667.

2. The labor input is reduced by 70%: the sealing agent reported in various documents is used for preventing and controlling monocotyledonous weeds after seedling emergence, other weeds are removed manually, and the labor force required for every 667 square meters reaches 7 working hours, while the method for preventing and controlling the weeds in the bupleurum root field only needs 2 working hours, and the working hours are 100 yuan per one working hour, and 500 yuan per 667 square meters is saved.

3. The herbicide dosage and the use method are safe: the herbicides used in the technology of the invention are pendimethalin, trifluralin, prometryn, oxyfluorfen and haloxyfop-R-methyl respectively, which belong to the types with high safety, the application dosage is reduced by 40 percent compared with the normal application dosage, and the soil residue and the medicinal material residue both reach the enterprise-level GACP standard.

4. By adopting the interplanting method, the comprehensive utilization rate of land is improved by interplanting the young citrus and the radix bupleuri, the blank of increasing income in the incubation period of the young citrus is effectively supplemented, compared with the method of interplanting corn, potato, watermelon and other crops in the young citrus, the production benefit per mu is obviously different, and the comprehensive benefit of interplanting the radix bupleuri can reach 4000 yuan per mu.

5. The coverage rate of fertile farmland is improved, and the field weed damage is reduced: at present, seedlings of 1-2 ages are planted in the new garden, and the field coverage rate of the crown is less than 5%. The radix bupleuri is interplanted in the young citrus orchard, the land coverage rate is improved to be more than 90%, the growth cycle of the radix bupleuri is 1 year, and the field weed growth and spread can be well prevented and controlled by the operations of covering after seeding, herbicide spraying prevention and control, topping regulation and control and the like, so that the field management of young citrus is effectively reduced.

6. Improve soil environment, promote fertilizer utilization efficiency: by interplanting the radix bupleuri in the citrus orchard, the soil turnover frequency is increased, the soil looseness and air permeability are greatly improved, the stable state of the microbial environment in the soil is maintained, and the occurrence rate of field diseases can be effectively reduced. The compound fertilizer and the organic fertilizer are used as the base fertilizer in the interplanted middle field, so that the growth of the radix bupleuri can be met, and the demand of oranges can be guaranteed. Bupleurum growth middle and later stages are great to the phosphorus fertilizer demand, and the relative input of application of phosphorus fertilizer also improves, and the oranges and tangerines seedling also can promote root to grow on this fertilization basis, promotes the growing power of oranges and tangerines seedling.

7. The yield of fertile farmlands is increased, and the planting risk is reduced: at present, crops such as corn, watermelon, potato and the like are mainly interplanted in young citrus, the comprehensive benefit per mu is about 1500 yuan, even if multiple crops are interplanted in one year, the maximum comprehensive benefit reaches 4500 yuan, and the comprehensive benefit of interplanted radix bupleuri can reach 4000 yuan. In the interplanting process, the planting period of the radix bupleuri is one crop a year, and the radix bupleuri is a customized medicinal garden variety, so that the radix bupleuri interplanting method has the outstanding advantages of stable price, stable yield and low production investment, and is a no-existing outstanding advantage in other modes.

Drawings

FIG. 1 is a partial view of the condition of weeds covered between closed and non-closed after sowing, the covering is corn stalks and the sealing agent is pendimethalin; wherein a is the condition that the weeds in the field are not sealed, and b is the effect after the weeds in the field are sealed;

FIG. 2 is an enlarged view of the weed conditions in the covered and unsealed fields after sowing;

figure 3 pre-emergence herbicide application: closing pendimethalin after sowing, covering rice husks for 1 cm: wherein a is the local condition of prometryn spraying, b is the on-site condition of prometryn spraying, c is a local weed death image after application, and d is a weed death area image after application;

FIG. 4 shows that pendimethalin is sealed after sowing and rice husks cover 1cm, prometryn is sprayed before seedling, oxyfluorfen and haloxyfop-R-methyl are sprayed after seedling: wherein a is a post-emergence weeding front area diagram, b is a post-emergence weeding front local diagram, and c is a post-emergence weeding rear area diagram after herbicide spraying; d is a local picture after herbicide spraying and application.

Detailed Description

Example 1

1) Test site: longquan town of yetongling area in Yichang city of Hubei province

2) The test varieties are as follows: bupleurum falcatum L of annual Bupleurum falcatum L

3) Sowing time: 10 and 20 months in 2019

4) Sowing density: the dosage of the product is 2kg per 667 square meters.

5) And (3) weed control: in the implementation, a plurality of weed prevention and control schemes are designed, and the specific scheme is shown in table 1. The contents of pendimethalin, trifluralin, prometryn, oxyfluorfen and haloxyfop-methyl are respectively 33%, 48%, 40%, 21% and 10.8% in the test group, the dosage of pendimethalin per 667 square meter in the test group 1-5 is 100ml, and the dosages of pendimethalin and trifluralin per 667 square meter in the test group 6 are respectively 50ml and 80 ml. The application dosage of each 667 square meter in a test group is 30g, and the application dosages of oxyfluorfen and haloxyfop-methyl are 40ml and 40ml in 3-6 test groups.

TABLE 1 weed control protocol for different test groups

Note that: covering rice husk after sowing with thickness of 1cm, applying weed before emergence of seedlings after germination, and weeding after emergence of seedlings by selecting bupleurum seedlings at the 4-leaf stage or bupleurum seedlings as high as more than or equal to 8 cm.

6) And (4) analyzing results: the weed control efficiency, the yield of bupleurum, the labor amount per mu and the quality of bupleurum are comprehensively analyzed. The quality of the radix bupleuri is detected by quality inspection department of the Ministry of the Pingjincun, and whether the pesticide residue is qualified or not is mainly detected.

The prevention and control efficiency investigation method comprises the following steps: sampling 3 points randomly selected in each test area by adopting a fixed sample formula (0.5m multiplied by 0.5m), recording the quantity of weeds, surveying 1 day before the application of the herbicide and 15 days after the application of the herbicide respectively, and calculating the control effect according to the following formula:

the plant control effect is (number of the weed plants in the control area-the weed plant tree in the treatment area)/the weed plant tree in the control area is multiplied by 100

7) And (3) test results:

A. efficiency of different control methods on weed control

The results in table 1 show that the weed control effects of the test groups 5 and 6 are higher, which indicates that the efficiency of the herbicide combined application on controlling weeds in the field of bupleurum is higher than that of a single control method. It is also shown that the weeds in the field can be effectively killed after the seedlings emerge and the space is provided for the subsequent growth of bupleurum. Through comparison of test groups 3, 4 and 5, the number of the monocotyledonous weeds in the weeds after seedlings emerge in the bupleurum field is higher than that of dicotyledonous weeds, which is probably related to the conventional weed communities in the field, and the weeds in the bupleurum field cannot be effectively prevented and controlled by single application of selective herbicides, and the problem of weed clustering can be effectively solved only by applying multiple herbicides.

TABLE 1 comparison of the control of weeds by different control methods

B. Influence of different weed control methods on yield and quality of radix bupleuri

As can be seen from Table 2, the control group and the test groups 1 and 2 have no significant difference in yield and are mainly reflected in the later-stage weed control, so that the field coverage thickness can reach 2cm, the relative control effect is good, and the control time is long. The difference between the test group 2 and the test group 3 is not obvious, the difference between the test group 3 and the test group 4 is not obvious, and the difference between the test group 2 and the test group 4 is obvious, so that the control effect on the field weeds is not obvious when the oxyfluorfen and the haloxyfop-R-methyl are independently applied in the post-emergence control, namely after one kind of grass is killed, the killed grass can grow in the field to form superiority. The test groups 5 and 6 have significant difference with other groups, and compared with the two groups, the two groups have no significant difference, and compared with the contrast bupleurum fresh weight yield, the yield is improved by more than 30 percent, which shows that the yield of the bupleurum in the field can be significantly improved after the weeds are effectively controlled. Comprehensive detection on the pesticide residues of the radix bupleuri in each test group shows that the quality of the radix bupleuri under each treatment reaches the standard and meets the GACP management standard in an enterprise, which indicates that the type of the herbicide related to the method and the application method thereof meet the standard production system of medicinal materials.

TABLE 2 analysis of Bupleurum chinense yield, quality and labor employment by different weed methods

Group of	Bupleurum output/kg	Quality standard reaching condition
			Control group	90a	Reach the standard
Test group 1	93a	Reach the standard
			Test group 2	98ab	Reach the standard
Test group 3	105b	Reach the standard
			Test group 4	104b	Reach the standard
Test group 5	130c	Reach the standard
			Test group 6	124c	Reach the standard

Note that: the above are the output per 667 square meters and the total labor for labor service. Comparing the data in the same column, the lower case completely different indicates significant difference (P < 0.05).

C. Weed comprehensive control method and conventional planting management production input analysis

The best weed prevention and control test group 6 in the test is selected to be compared with the conventional bupleurum planting weeding management, and the relevant labor employment is shown in the table 3.

TABLE 3 analysis of the amount of labor for Bupleurum chinense planting under control of various weeds

Group of	Seeding	Covering	Weeding	Pest control	Topping	Total up to
							Conventional planting	0.2	0	7	1	2	10.2
Test group 6	0.2	1	1	0.5	2	4.7

The data in table 3 show that the number of the conventional planting labor workers is 10.2, the number of the test group 6 is 4.7, and the labor workers are reduced by 5.5. At present, the labor cost of the test field is 100 yuan/working day, and the cost of the test group 6 is reduced by 550 yuan compared with the cost of the conventional planting management. The test group 6 has higher investment than the conventional planting production data, which is mainly expressed in that 13 yuan and 150 yuan are respectively added for every 667 square meters and 163 yuan is added for the total. Comprehensive analysis, and 313 yuan per 667 square meters of the test group 6 and the conventional planting production investment.

The average yield of the radix bupleuri planted in the local conventional method per 667 square meter is 95kg, the yield of the test group 6 per 667 square meter is 124kg, the difference between the yield and the yield is 29kg, the purchase price of fresh radix bupleuri is 24 yuan/kg, and the direct production benefit of the test group 6 per 667 square meter is improved by 696 yuan compared with the conventional planting.

In conclusion, compared with the conventional planting method, the test group 6 has the production benefit of improving by 1009 yuan per 667 square meter.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A comprehensive weed control method in bupleurum planting is characterized by comprising the following steps:

1) soil plowing: before planting and sowing radix bupleuri, ploughing soil by using a rotary cultivator, and weeding by ploughing;

5) managing weeds after seedling of radix bupleuri;

the comprehensive weed control in the bupleurum planting is completed.

2. The method for the comprehensive control of weeds in the planting of bupleurum chinense as claimed in claim 1, wherein: in the step 2), the sealing agent is sprayed for 2 times, the sealing agent is pendimethalin missible oil for the first time, and 12-30 ml of the sealing agent is applied to every 667 square meter; and spraying 28-50 ml of trifluralin emulsifiable concentrate every 667 square meters after the first spraying is finished.

3. The method for the comprehensive control of weeds in the planting of bupleurum chinense as claimed in claim 1, wherein: in the step 3), the covering thickness is 1-2 cm, and crop straws or processing byproducts including straws, crushed straws, chaffs, rotten silage grass or the like can be selected for covering.

4. The method for the comprehensive control of weeds in the planting of bupleurum chinense as claimed in claim 1, wherein: in the step 4), before the radix bupleuri seeds do not germinate, spraying the prometryn wettable powder for 1 time when the weeds in the field are more, wherein the application amount of the prometryn wettable powder is 8-20 g per 667 square meter, namely the application amount of the 40% prometryn wettable powder is 20-50 g.

5. The method for the comprehensive control of weeds in the planting of bupleurum chinense as claimed in claim 1, wherein: in the step 5), after all the bupleurum roots emerge, observing weeds in the field: when large-scale monocotyledonous weeds appear, 20-70 ml of high-efficiency haloxyfop-methyl emulsifiable concentrate with the concentration of 10-11 percent is applied to every 667 square meters; when mixed monocotyledonous and dicotyledonous weeds appear, when the radix bupleuri grows to 4-leaf period or the plant height is more than or equal to 8cm, 20-22% of oxyfluorfen emulsifiable concentrate is sprayed for every 667 square meter, and then 20-70 ml of 10-11% of high-efficiency haloxyfop emulsifiable concentrate is sprayed, and the two can not be mixed for application.

6. The method for the comprehensive control of weeds in the planting of bupleurum chinense as claimed in claim 1, wherein: in the implementation of the method, the seeding amount of radix bupleuri per 667 square meter needs to be controlled to be 1-2.5 kilograms, and the number of effective seedlings in the radix bupleuri field is controlled to be 2-4 thousands of plants.

7. The method for the comprehensive control of weeds in the planting of bupleurum chinense as claimed in any one of claims 1 to 5, wherein: the method is used for the flow of interplanting the bupleurum among young oranges.

8. The method for the comprehensive control of weeds in the planting of bupleurum chinense as claimed in claim 6, wherein: the process for interplanting the bupleurum in the young citrus comprises the following steps:

s1, garden selection;

s2, selecting varieties of radix bupleuri;

s4, land preparation and fertilization: turning and shaping the cultivation compartment surface of the young citrus by using a small rotary cultivator or a mini-tiller, and applying ternary compound and commercial organic fertilizer as base fertilizer; the organic fertilizer can also be replaced by decomposed farmyard manure, and the using amount of the organic fertilizer is 5-10 times of that of the commercial organic fertilizer;

s5, radix bupleuri seeding quantity and seeding post-treatment: the radius range of 0.5m of the citrus plant is not sown with the bupleurum seeds, other lands in the compartment surface are uniformly sown with the bupleurum seeds, and after the bupleurum is sown, the comprehensive weed control is carried out;

and (5) interplanting the radix bupleuri in young citrus.

9. The method for the comprehensive control of weeds in the planting of bupleurum chinense as claimed in claim 7, wherein: s1, garden selection: selecting a field block which is suitable for small mechanical tillage and good in water-draining property in the young orange interplanting garden, wherein the age of the orange is preferably 1-3 years;

s4, land preparation and fertilization: turning and leveling the cultivation compartment surface of young citrus by using a small rotary cultivator or a mini-tiller, and applying 40-50 kg of ternary compound fertilizer and 120-150 kg of commercial organic fertilizer to every 667 square meters;

s5, radix bupleuri seeding quantity and seeding post-treatment: the radius range of 0.5m of the citrus plants is not broadcast with bupleurum seeds, other lands in the compartment surface are uniformly broadcast with bupleurum seeds, and 1-2.5 kg of bupleurum seeds are broadcast with each 667 square meters.

10. The method for the comprehensive control of weeds in the planting of bupleurum chinense as claimed in claim 7, wherein: and S6 interplanting field management: the seedling emergence period of the bupleurum is long, and the pruning shaping and the top dressing of young citrus seedlings are mainly enhanced after the bupleurum is sowed;

annual radix bupleuri generally emerges in the middle and last ten days of 12 months, and low temperature in the later period has no influence on radix bupleuri seedlings; after the seedlings of the radix bupleuri emerge in 4 months in the next year, when the radix bupleuri grows to 4-5 leaves, performing field topdressing and weed control, wherein 5-10 kg of ternary compound fertilizer and 5-10 kg of urea are applied to every 667 square meters; after the radix bupleuri grows and is sealed, the field management focuses on pest control and plant regulation; after the radix bupleuri enters a bud period, topping for the first time, wherein the reserved height of the topped radix bupleuri is 20-25 cm; when the plant height is more than or equal to 40cm, topping again, and strictly controlling the occurrence of the flowering and bolting phenomena of the bupleurum.