CN112136619A

CN112136619A - Weeding method based on no-burning, line-collecting, covering, returning and no-tillage seeding of corn straws 4090

Info

Publication number: CN112136619A
Application number: CN202011003279.0A
Authority: CN
Inventors: 胡瑞学; 刘明宇; 赵晓雨; 蔡书婷; 周伟
Original assignee: DAQING AGRICULTURAL TECHNOLOGY PROMOTION CENTER
Current assignee: DAQING AGRICULTURAL TECHNOLOGY PROMOTION CENTER
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2020-12-29

Abstract

The invention discloses a weeding method based on corn straw burning-free row-gathering coverage returning 4090 no-tillage seeding, which comprises the following steps of S1: adopting a straw burning-free row-gathering covering returning 4090 no-tillage cultivation mode to sow corn seeds; s2: debugging a sprayer and replacing a special spray head for sealing the herbicide; s3: when the weeds supply soil, a closed herbicide of 53 percent isoxazole herbicide suspending agent and 81.5 percent acetochlor is uniformly sprayed on the soil surface by using a sprayer; s4: carrying the pesticide used in the step S3 out of the field after being empty-packaged and cleaned, and delivering the pesticide to a pesticide operating unit nearby for harmless treatment; s5: debugging a spraying machine, and replacing a special spray head for weeding after seedling; s6: uniformly spraying the post-emergence herbicide of 30 percent topramezone, 38 percent atrazine and a zabefeng auxiliary agent on the surfaces of leaves when the corn seedlings are in the three-leaf to five-leaf period; s7: and (5) cleaning the pesticide empty package used in the step S6, taking the pesticide empty package away from the field, and delivering the pesticide empty package to a pesticide administration unit nearby for harmless treatment. The weeding method can effectively solve the problem of serious weed in the no-tillage seeding corn field.

Description

Weeding method based on no-burning, line-collecting, covering, returning and no-tillage seeding of corn straws 4090

Technical Field

The invention relates to the technical field of no-tillage seeding of corn, in particular to a weeding method based on no-incineration row-collection coverage returning 4090 no-tillage seeding of corn straws.

Background

The core area of the popularization of the protective farming system of Heilongjiang province in Daqing city has better foundation for covering no-tillage with straws mainly comprising corns. In order to deeply enter into a black land protective farming action plan in Daqing city of real estate, the corn protective farming is pushed as a key point, the organic integration of agricultural machinery and agriculture is maintained, the key breakthrough and the integral pushing are realized simultaneously, the stable yield and the high yield are both considered with cost saving and efficiency improvement, the protective farming is actively pushed and firmly pushed in an appropriate area of the whole city, the black land protection and the agricultural sustainable development are promoted, and the national grain safety base stone is built and used.

Under the background, the no-burning row-gathering and field-returning 4090 no-tillage seeding technology of corn straws is produced. The conventional method is adopted to plant the corn, and if a large amount of straws are not treated after harvesting, the straws cannot be quickly decomposed in the current year, so that the corn sowing in the next spring is seriously influenced. The phenomena of seedling shortage and strip breakage appear after the untreated plots of the straws are sown, and the high and stable yield of the corn is difficult to guarantee. At present, in actual production, because of the influence of agricultural mechanical conditions and climatic factors, a large amount of corn straws are difficult to directly return to the field, and part of farmers adopt a mode of directly burning straws in the field to treat, so that the corn straw sticking resource waste is caused, the environmental pollution is caused, cultivated land is burnt out, and the balance of a farmland ecosystem is seriously influenced. The technology demonstration and popularization of the non-burning oriented row-collecting covering and field returning technology of the corn straws are developed, the straw burning can be effectively avoided, the environmental pollution is reduced, the straw utilization rate is improved, the soil organic matter and nutrient content is increased, the soil plough layer structure and the fertility characteristics are improved, and the soil fertility is improved, so that the black land is more and more fertile; meanwhile, the method has important significance for sustainably improving the corn yield and quality and reducing rural fire.

The no-tillage seeding technology is accompanied by the problem of aggravation of diseases and weeds in the corn field, the weed base of the corn field is large, the weeds such as barnyard grass, millet atrazine, piemarker, amaranth, chenopodium album, wild soybean and scandent hop are more, and the weeds such as wild millet, dayflower, endive, spiny weed and spiny weed are less, but the prior art does not have a weeding method specially aiming at the no-tillage seeding technology.

Disclosure of Invention

Aiming at the existing problems, the invention aims to provide a weeding method based on the no-burning row-collecting coverage returning 4090 no-tillage seeding of corn straws, which aims at solving the problem of serious weed damage in the no-tillage seeding corn field by adopting the no-burning row-collecting coverage returning 4090 no-tillage seeding technology of corn straws in arid areas in the west of Heilongjiang province.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a weeding method based on corn straw burning-free row-covering returning 4090 no-tillage seeding is characterized by comprising the following steps,

s1: adopting a straw burning-free row-gathering covering returning 4090 no-tillage cultivation mode to sow corn seeds;

s2: debugging a sprayer and replacing a special spray head for sealing the herbicide;

s3: when the weeds supply soil, uniformly spraying a closed herbicide on the soil surface by using a sprayer;

s4: carrying the pesticide used in the step S3 out of the field after being empty-packaged and cleaned, and delivering the pesticide to a pesticide operating unit nearby for harmless treatment;

s5: when the three leaves of the corn seedlings reach the five leaves, debugging a spraying machine, and replacing a special spraying nozzle for weeding after seedlings;

s6: uniformly spraying the post-emergence herbicide on the surfaces of the leaves by using the spraying machine debugged in the step S5;

s7: and (5) cleaning the pesticide empty package used in the step S6, taking the pesticide empty package away from the field, and delivering the pesticide empty package to a pesticide administration unit nearby for harmless treatment.

Further, the specific operation of step S1 includes,

s11: selecting land; selecting a land block which is suitable for mechanical operation, can return the straws to the field in full and has no harmful long-residue herbicide to the corn;

s12: crushing straws; crushing crop straws in the previous stubble land blocks, wherein the crushing length is not more than 15 cm;

s13: the straw is gathered and acted; performing row-collecting operation when soil is thawed to be 10cm and no freezing and sticking exists between the straws and the ground, collecting two rows of straws in a row of furrows, and taking the other cleaned straw-free furrow as a sowing belt; the coverage width of the row-collected straws cannot exceed 75 cm; the width of the sowing belt cleaned in the row is more than 55 cm;

s14: and (6) sowing.

Further, the seeding time in step S14 is from 5 months 1 day to 5 months 6 days in the first temperature zone, and from 5 months 6 days to 5 months 10 days in the second temperature zone; the method adopts a double-row no-tillage planter with narrow row spacing of 40cm and wide row spacing of 90cm for precision dibbling, 3500-4000 seedlings are protected per mu, the thickness of the covering soil after sowing and pressing is 3-4cm, and sowing without water.

Further, in the step S14, base fertilizer and mouth fertilizer are applied while sowing, wherein the base fertilizer is 8-10cm deep below the seeds and 12cm away from the seeds, 17.5 kg of diammonium, 7.5kg of potassium sulfate, 1.5kg of zinc sulfate and 5kg of large-particle urea are applied to each mu of the base fertilizer; the fertilizer is applied with 5kg of diammonium hydrogen fertilizer per mu on the same layer and strip with the seeds.

Further, the blocking herbicide in step S3 was 53% isoxazole herbicide suspension +81.5% acetochlor.

Further, the amount of the blocking herbicide used was 130mL of 53% isoxazole-atrazine suspension +100mL of 81.5% acetochlor per acre, mixed with 30 kg of water.

Further, in the step S6, the post-emergence herbicide is 30% topramezone +38% atrazine + special adjuvant.

Further, the special auxiliary agent is a Fengfeng auxiliary agent.

Further, the dosage of the post-emergence herbicide is 10mL of 30% topramezone, 200mL of 38% atrazine and 80mL of zabefeng auxiliary agent per mu, and the post-emergence herbicide is mixed with 20 kg of water.

Further, the spraying conditions of the closed herbicide and the post-emergence herbicide are as follows: the working pressure is more than 2 atmospheric pressures, and the wind power is less than or equal to tertiary wind.

The invention has the beneficial effects that:

aiming at the weeding method of the corn straw burning-free row-gathering mulching returning 4090 no-tillage seeding in the arid area in the west of Heilongjiang province, the invention combines the closed herbicide and the post-emergence herbicide for use, and specifically limits that the closed herbicide is 53% isoxazole-atrazine suspending agent +81.5% acetochlor and the post-emergence herbicide is 30% topramezone +38% atrazine + special auxiliary agent, thus effectively solving the problem of serious weed damage in the no-tillage seeding corn field.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the embodiments.

The first embodiment is as follows:

test site: the agricultural technology popularization center of Daqing city tests.

Soil type: carbonate black calcia, ph value: 7.6, organic content: 3.3 percent.

A weeding method for corn straw free-burning row-covering returning 4090 no-tillage seeding comprises the following steps,

specifically, S11: selecting land; selecting a land block which is suitable for mechanical operation, can return the straws to the field in full and has no harmful long-residue herbicide to the corn; the air environment quality is in accordance with the regulation of GB 3095, the soil environment quality is in accordance with the regulation of GB 15618, and the farmland irrigation water quality is in accordance with the regulation of GB 5084.

s13: the straw is gathered and acted; in Daqing areas, starting in the last ten days of April, performing row collecting operation when soil is frozen by 10cm and no freezing and sticking exists between straws and the ground, collecting two rows of straws in a row of furrows, and taking the other cleaned straw-free furrow as a sowing belt; the coverage width of the row-collected straws cannot exceed 75 cm; the width of the sowing belt cleaned in the row is more than 55 cm;

s14: and (6) sowing.

Specifically, the planting mode of covering 4090 with straws is 5-7 days later than that of the conventional ridge planting method, and the test area is in the second temperature zone, so that the planting is carried out between 6 days in 5 months and 10 days in 5 months (if the planting field is in the first temperature zone, the planting time is selected between 1 day in 5 months and 6 days in 5 months); adopting a double-row no-tillage planter with narrow row spacing of 40cm and wide row spacing of 90cm for precision dibbling, keeping 3500-4000 seedlings per mu, and sowing and compacting to obtain covering soil with thickness of 3-4cm without water sowing; for arid lands, the seeding belt needs to be supplemented with water and watered thoroughly in time after no-tillage seeding, and the land temperature is too low due to the fact that the whole irrigation is not suitable.

In seed selection, according to market requirements and regional industry development characteristics, on the basis of reasonable variety layout, a good variety which is suitable for local ecological conditions, early-maturing, high-quality, high-yield, multi-resistance and suitable for close planting and is suitable for planting is selected and approved by the national or Heilongjiang province and is less than the local perennial activity temperature by 200 ℃. The first temperature zone in the city selects the variety in 125 days, and the second temperature zone selects the variety in 122 days. The quality of the seeds is best to meet the national standard (the purity of the seeds is not less than 98%, the purity is not less than 99%, the germination rate is not less than 90%, and the water content is less than 16%). The seeds which are carefully selected and processed by a seed enterprise are selected, and the seeds without coating treatment are coated to prevent and control soil-borne pests and soil-borne diseases.

Furthermore, the no-tillage seeding machine is provided with a base fertilizer and a fertilizer applying device, the base fertilizer and the fertilizer are applied while seeding, the base fertilizer is 8-10cm deep below the seeds and 12cm away from the seeds, and the requirement of seed and fertilizer isolation is met; applying 17.5 kg of diammonium, 7.5kg of potassium sulfate, 1.5kg of zinc sulfate and 5kg of large-particle urea to a base fertilizer mu; the fertilizer is applied with 5kg of diammonium hydrogen fertilizer per mu on the same layer and strip with the seeds.

S2: A3W-280G type suspended boom sprayer is debugged, and a sealed weeding special spray head No. 11004 windproof spray head produced by TEEJET company is replaced. The height of the spray heads is 50cm away from the ground, and the distance between the spray head bodies is 50 cm;

s3: when the weeds supply soil, the self-propelled boom sprayer operates under the conditions that the operating pressure is over 2 atmospheric pressures and the wind power is less than or equal to third-level wind, and the closed herbicide is uniformly sprayed on the soil surface;

specifically, the blocking herbicide is 53% isoxazole-herbicide suspension and 81.5% acetochlor, the dosage of the blocking herbicide is 130mL of 53% isoxazole-herbicide suspension and 100mL of 81.5% acetochlor per mu, and the blocking herbicide is mixed with 30 kilograms of water.

S4: cleaning the pesticide empty package used in the step S3 for 3 times, taking the pesticide empty package out of the field and returning the pesticide empty package to a pesticide operating shop or putting the pesticide empty package into a special pesticide package waste recycling bin for uniform recycling;

s5: when the corn seedlings are in the period from three leaves to five leaves, a 3W-280G type suspended boom sprayer is debugged, and a special spray head 11003 windproof spray head for post-emergence weeding, which is produced by TEEJET company, is replaced, wherein the height of the spray head is 50cm away from the ground, and the distance between spray head bodies is 50 cm;

s6: the method comprises the following steps of (1) carrying out standard operation by adopting a 3W-280G type suspended boom sprayer under the conditions of clear weather, operating pressure of more than 2 atmospheric pressures and wind power of less than or equal to tertiary wind, and uniformly spraying the post-emergence herbicide on the surfaces of blades;

specifically, the post-emergence herbicide is 30% topramezone, 38% atrazine and a special auxiliary agent, and the special auxiliary agent is a fenfluramine auxiliary agent;

the using amount of the post-emergence herbicide is 10mL of 30% topramezone, 200mL of 38% atrazine and 80mL of zabefeng auxiliary agent per mu, and the post-emergence herbicide is mixed with 20 kg of water; the spraying time is 10 am or 3 pm later.

Example two:

the second example differed from the first example only in that the application rate of the blocking herbicide was different and the other steps were the same.

Specifically, to verify that the application rates of the blocking herbicides in example one were the optimum application rates, in this example, comparative experiments were conducted with different application rates of the blocking herbicides, with 9 different sets of blocking herbicide application rate tests and a blank control test (without any treatment) being set. The application rates of the 9 different groups of the blocking herbicides were:

treatment 1: -53% isoxazole-tare suspension (90 ml/mu) +81.5% acetochlor/mu (100 ml/mu)

And (3) treatment 2: -53% isoxazole-tare suspension (90 ml/mu) +81.5% acetochlor/mu (130 ml/mu)

And (3) treatment: -53% isoxazole-tare suspension (90 ml/mu) +81.5% acetochlor/mu (160 ml/mu)

And (4) treatment: -53% isoxazole-tare suspension (110 ml/mu) +81.5% acetochlor/mu (100 ml/mu)

And (4) treatment 5: -53% isoxazole-tare suspension (110 ml/mu) +81.5% acetochlor/mu (130 ml/mu)

And (6) treatment: -53% isoxazole-tare suspension (110 ml/mu) +81.5% acetochlor/mu (160 ml/mu)

And (7) treatment: -53% isoxazole-tare suspension (130 ml/mu) +81.5% acetochlor/mu (100 ml/mu)

And (4) treatment 8: -53% isoxazole-tare suspension (130 ml/mu) +81.5% acetochlor/mu (130 ml/mu)

And (4) treatment: -53% isoxazole-tare suspension (130 ml/mu) +81.5% acetochlor/mu (160 ml/mu)

Each treating agent is added with 30 kg/mu of water. Weed control was investigated 30 days after herbicide application, 5 spots were investigated at random for each treatment, 0.2 square meters were investigated for each spot, and 1 square meter was investigated for each treatment area in total, and the results are shown in table 1.

TABLE 1 Effect of different application rates of the blocking herbicides on weed control

As can be seen from table 1, while treatment 9 gave the highest control efficacy of 91.5%, treatment 7 also gave 91.2%, close to treatment 9, with a weed fresh weight of 47.97 lower than 51.09 for treatment 9, and a fresh weight control efficacy of 92.3% higher than 91.8 for treatment 9, in combination with the cost of application, treatment 7, namely 53% isoxazole herbicide suspension (130 ml/mu) +81.5% acetochlor/mu (100 ml/mu) in example one, was recommended.

Example three:

example three differed from example one only in the amount of post-emergence herbicide applied and the other steps were the same.

Specifically, to verify that the post-emergence herbicide application rates in example one were the optimum application rates, in this example, comparative tests of different post-emergence herbicide application rates were conducted, with the equipment 9 groups tested for different post-emergence herbicide application rates, and a blank control test (without any treatment) was additionally set. The application rates of the 9 different groups of post-emergence herbicides are respectively as follows:

treatment of 1-30% topramezone 6 mL/mu + adjuvant (80mL) +38% atrazine 160 mL/mu

Treatment 2-30% topramezone 8 mL/mu + auxiliary agent (80mL) +38% atrazine 160 mL/mu

Treatment of 3-30% topramezone 10 mL/mu + adjuvant (80mL) +38% atrazine 160 mL/mu

Treatment of 4-30% topramezone 6 mL/mu + adjuvant (80mL) +38% atrazine 200 mL/mu

The treatment is carried out on 5-30% of topramezone 8 mL/mu + auxiliary agent (80mL) +38% of atrazine 200 mL/mu

Treatment of 6-30% topramezone 10 mL/mu + adjuvant (80mL) +38% atrazine 200 mL/mu

Treatment of 7-30% topramezone 6 mL/mu + adjuvant (80mL) +38% atrazine 240 mL/mu

8-30% topramezone 8 mL/mu + auxiliary agent (80mL) +38% atrazine 240 mL/mu

Treatment of 9-30% topramezone 10 mL/mu + adjuvant (80mL) +38% atrazine 240 mL/mu

Each treating agent is added with 20 kg/mu of water. Weed control was investigated 15 days after herbicide application, 5 spots were investigated at random for each treatment, 0.2 square meters were investigated for each spot, and 1 square meter was investigated for each treatment area in total, and the results are shown in table 2.

TABLE 2 control of weeds with different post-emergence herbicides

As can be seen from table 2, the control effect of treatment 9 was the highest and reached 99.8%, but the control effect of treatment 6 was 99.3%, which was close to that of treatment 9. From comprehensive analysis of the application cost and the control effect, the treatment 6 is recommended, namely 10 mL/mu of 30% topramezone, 80mL of auxiliary agent and 200 mL/mu of 38% atrazine in the first embodiment.

Example four:

example four differs from example one only in the type and application rate of the blocking herbicide, and the other steps are the same.

Specifically, in this example, 81.5% acetochlor +38% atrazine + 87.5% 2.4 d isooctyl ester was selected as the blocking herbicide; 9 different blocked herbicide application rate tests were set and a blank control test (no treatment) was set. The application rates of the 9 different groups of the blocking herbicides were:

treatment 1-81.5% acetochlor 100 ml/mu +38% atrazine 200 ml/mu + 87.5% 2.4 drops isooctyl ester 30 ml/mu;

treatment 2-81.5% acetochlor 100 ml/mu +38% atrazine 230 ml/mu + 87.5% 2.4 drops isooctyl ester 30 ml/mu;

treatment 3-81.5% acetochlor 100 ml/mu +38% atrazine 260 ml/mu + 87.5% 2.4 drops isooctyl ester 30 ml/mu;

treatment 4-81.5% acetochlor 120 ml/mu +38% atrazine 200 ml/mu + 87.5% 2.4 drops isooctyl ester 30 ml/mu;

treating 5-81.5% acetochlor 120 ml/mu +38% atrazine 230 ml/mu + 87.5% 2.4 drops isooctyl ester 30 ml/mu;

treating 6-81.5% acetochlor 120 ml/mu +38% atrazine 260 ml/mu + 87.5% 2.4 drops isooctyl ester 30 ml/mu;

treating 7-81.5% acetochlor 140 ml/mu +38% atrazine 200 ml/mu + 87.5% 2.4 drops isooctyl ester 30 ml/mu;

treatment 8-81.5% acetochlor 140 ml/acre +38% atrazine 230 ml/acre + 87.5% 2.4 drops isooctyl ester 30 ml/acre;

treating 9-81.5% acetochlor 140 ml/mu +38% atrazine 260 ml/mu + 87.5% 2.4 drops isooctyl ester 30 ml/mu;

each treating agent is added with 30 kg/mu of water. Weed control was investigated 30 days after herbicide application, 5 spots were investigated at random for each treatment, 0.2 square meters were investigated for each spot, and 1 square meter was investigated for each treatment area in total, and the results are shown in table 3.

TABLE 3 weed control effect of different application rates of the herbicide

As can be seen from Table 3, the control effect of treatment 9 is the highest, the control effect on the plant number can reach 90.2%, but the control effect of treatment 6 can also reach 89.7%, which is close to the control effect of treatment 9 of 90.2%, and treatment 6 (81.5% acetochlor 120 ml/mu +38% atrazine 260 ml/mu + 87.5% 2.4 drops of isooctyl ester 30 ml/mu) is the best from comprehensive analysis of the application cost and the control effect.

Comparing the control effect (89.6%) of treatment 6 (81.5% acetochlor 120 ml/mu +38% atrazine 260 ml/mu + 87.5% 2.4 d isooctyl ester 30 ml/mu) as a herbicide on weeds in this example with the control effect (91.8%) of 53% isoxazole-atrazine suspending agent (130 ml/mu) +81.5% acetochlor/mu (100 ml/mu) as a herbicide on weeds in example one, it is evident that the control effect of 53% isoxazole-atrazine suspending agent (130 ml/mu) +81.5% acetochlor (100 ml/mu) as a herbicide on weeds in the present invention is better and the application cost is lowest.

Example five:

example five differs from example one only in the kind and application amount of the post-emergence herbicide, and the other steps are the same.

Specifically, in this example, the post-emergence herbicide was selected from 24% nicosulfuron atrazine + 15% mesotrione; 9 different blocked herbicide application rate tests were set and a blank control test (no treatment) was set. The application rates of the 9 different groups of the blocking herbicides were:

treatment 1-24% nicosulfuron atrazine (80ml) + 15% mesotrione (50ml)

Treatment 2-24% nicosulfuron atrazine (100ml) + 15% mesotrione (50ml)

Treatment 3-24% nicosulfuron atrazine (120ml) + 15% mesotrione (50ml)

Treatment 4-24% nicosulfuron atrazine (80ml) + 15% mesotrione (70ml)

Treatment 5-24% nicosulfuron atrazine (100ml) + 15% mesotrione (70ml)

Treatment 6-24% nicosulfuron atrazine (120ml) + 15% mesotrione (70ml)

Treatment 7-24% nicosulfuron atrazine (80ml) + 15% mesotrione (90ml)

Treatment 8-24% nicosulfuron atrazine (100ml) + 15% mesotrione (90ml)

Treatment 9-24% nicosulfuron atrazine (120ml) + 15% mesotrione (90ml)

Each treating agent is added with 20 kg/mu of water. Weed control was investigated 15 days after herbicide application, 5 spots were investigated at random for each treatment, 0.2 square meters were investigated for each spot, and 1 square meter was investigated for each treatment area in total, and the results are shown in table 4.

TABLE 4 control Effect of different post-emergence herbicides on weeds

As can be seen from Table 4, the control effect of treatment 9 is the highest, and the control effect on the plant number can reach 96.6%, but the control effect of treatment 6 can also reach 96.4%, and is close to the control effect of treatment 9 of 96.6%, and treatment 6 is recommended to be used from comprehensive analysis of the medication cost and the control effect.

Compared with the control effect (96.4%) of the treatment 6 (24% nicosulfuron atrazine (120mL) + 15% mesotrione (70mL)) used as the post-emergence herbicide in the example, the control effect (99.3%) of the herbicide on the weeds is better when 30% topramezone 10 mL/mu + the adjuvant (80mL) +38% atrazine 200 mL/mu is used as the post-emergence herbicide in the example, and it is obvious that the control effect of the herbicide on the weeds is better when 30% topramezone 10 mL/mu + the adjuvant (80mL) +38% atrazine 200 mL/mu is used as the post-emergence herbicide in the invention.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A weeding method based on corn straw burning-free row-covering returning 4090 no-tillage seeding is characterized by comprising the following steps,

2. The weeding method based on corn straw burning-free row-gathering coverage returning to 4090 no-tillage seeding according to claim 1, characterized in that: the specific operation of step S1 includes,

s14: and (6) sowing.

3. The weeding method based on corn straw burning-free row-gathering coverage returning to field 4090 no-tillage seeding as claimed in claim 2, wherein: the seeding time in the step S14 is 5 months 1 days to 5 months 6 days in the first temperature zone, and 5 months 6 days to 5 months 10 days in the second temperature zone; the method adopts a double-row no-tillage planter with narrow row spacing of 40cm and wide row spacing of 90cm for precision dibbling, 3500-4000 seedlings are protected per mu, the thickness of the covering soil after sowing and pressing is 3-4cm, and sowing without water.

4. The weeding method based on corn straw burning-free row-gathering coverage returning to field 4090 no-tillage seeding as claimed in claim 3, wherein: in the step S14, base fertilizer and mouth fertilizer are applied while sowing, the base fertilizer is 8-10cm deep below the seeds and 12cm away, 17.5 kg of diammonium, 7.5kg of potassium sulfate, 1.5kg of zinc sulfate and 5kg of large-particle urea are applied per mu of the base fertilizer; the fertilizer is applied with 5kg of diammonium hydrogen fertilizer per mu on the same layer and strip with the seeds.

5. The weeding method based on corn straw burning-free row-gathering coverage returning to 4090 no-tillage seeding according to claim 1, characterized in that: the blocking herbicide in step S3 was 53% isoxazole herbicide suspension +81.5% acetochlor.

6. The weeding method based on corn straw burning-free row-gathering coverage returning to field 4090 no-tillage seeding as claimed in claim 5, wherein: the dosage of the closed herbicide is 130mL of 53% isoxazole-herbicide suspending agent +100mL of 81.5% acetochlor per mu, and the closed herbicide is mixed with 30 kilograms of water.

7. The weeding method based on corn stalk non-combustion row-gathering mulching returning to 4090 no-tillage seeding as claimed in claim 1, wherein the post-emergence herbicide in step S6 is 30% topramezone +38% atrazine + special purpose adjuvant.

8. The weeding method based on corn straw burning-free row-gathering mulching returning to 4090 no-tillage seeding as claimed in claim 7, wherein the special aid is a fenfluramine aid.

9. The weeding method based on corn stalk burning-free row-gathering mulching returning to 4090 no-tillage seeding as claimed in claim 8, wherein the amount of post-emergence herbicide is 10mL 30% topramezone +200mL 38% atrazine +80mL schobenfeng aid/acre, mixed with 20 kg water.

10. The weeding method based on corn straw burning-free collective row coverage returning to field 4090 no-tillage seeding as claimed in claim 1, wherein the spraying conditions of the blocking herbicide and the post-emergence herbicide are as follows: the working pressure is more than 2 atmospheric pressures, and the wind power is less than or equal to tertiary wind.