Efficient cleaning method for previous alfalfa field

Abstract

The invention provides an efficient cleaning method for a previous-crop alfalfa field, which comprises the following steps: cutting alfalfa in the alfalfa field in the vigorous growth period of the alfalfa, with the stubble height of cutting being 3-8 cm; 3-6 days after mowing, a weeding agent is sprayed to the alfalfa land; after spraying, the alfalfa land is covered with anti-grassland cloth, and the covering time is 7-15 days; observing the decomposition condition of the alfalfa root system, and removing the ground cloth when the alfalfa root system is completely rotten and decomposed; residues on the ground surface are removed, and preparation is made for planting other plants. According to the method, the alfalfa in the alfalfa field can be effectively and thoroughly removed at a time, production limitation and engineering cost input caused by secondary germination of the alfalfa are avoided, limitation on follow-up agriculture and forestry plant growth is reduced, a solid foundation is laid for secondary efficient utilization of the land in the later period, and the agriculture and forestry production value is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural weeding technology, and in particular to a high-efficiency cleaning method for a previous alfalfa field. BACKGROUND

[0002] Alfalfa is a kind of excellent forage grass with drought and barren resistance, and plays an important role in the development of animal husbandry in China. However, when the original alfalfa forage field is changed for other purposes, especially for planting other crops, the alfalfa cleaning becomes a very difficult work due to the strong vitality of alfalfa.

[0003] The alfalfa has deep root system and strong sprouting ability, and it is difficult to be completely removed by conventional mechanical and manual plowing, hoeing and herbicide spraying treatment. For the land originally used for alfalfa production, the growth of residual alfalfa will seriously limit the later agricultural and forestry planting and production, and cause the yield and quality of target crops to decrease. Therefore, it is of great significance to develop a high-efficiency alfalfa cleaning method for the reuse of the land with previous alfalfa.

[0004] In actual work, it is found that, due to the deep root system and strong sprouting ability of alfalfa, only thorough cleaning can better realize the reuse of agricultural and forestry production. However, the conventional mechanical and manual plowing and hoeing methods have very low efficiency and are difficult to effectively and comprehensively remove the underground roots. SUMMARY

[0005] The present application aims to at least solve one of the problems in the related art. To this end, the present application provides a high-efficiency cleaning method for a previous alfalfa field, which can realize effective and thorough cleaning of the alfalfa field at one time, and lay a solid foundation for the reuse of the land.

[0006] The present application provides a high-efficiency cleaning method for a previous alfalfa field, which comprises the following steps: S1. cutting the alfalfa in the alfalfa field during the vigorous growth period of the alfalfa, and the stubble height after cutting is 3-8 cm; S2. spraying herbicides on the alfalfa field 3-6 days after cutting; S3. covering the alfalfa field with grass-proof cloth after spraying, and the covering time is 7-15 days; S4. observing the decomposition status of the alfalfa root system, and removing the cloth when the alfalfa root system is completely decomposed; S5. removing the surface residues to prepare for planting other plants.

[0007] In some embodiments, the herbicides include glyphosate, gasoline, laundry detergent and water, and 250-400 g of glyphosate water agent, 5-10 mL of gasoline and 5-15 g of laundry detergent are added to every 20 L of water.

[0008] In some embodiments, in step S2, for the alfalfa field with good moisture and nutrient conditions, the herbicide is sprayed 3 days after mowing, and the herbicide is sprayed 4-6 days after mowing for other alfalfa fields.

[0009] In some embodiments, in step S3, the covering time of the weed-preventing cloth is 10 days.

[0010] In some embodiments, in step S5, the surface residues are removed by mechanical equipment or manually.

[0011] In some embodiments, in step S1, the vigorous growth period of alfalfa is May-June.

[0012] In some embodiments, the weed-preventing cloth completely covers the mowed alfalfa field.

[0013] In some embodiments, the weed-preventing cloth is spliced by multiple cloth blocks, the spliced parts are overlapped and fixed on the alfalfa field by pins.

[0014] In some embodiments, bricks are placed at the spliced parts of the weed-preventing cloth.

[0015] In some embodiments, the weed-preventing cloth is made of polylactic acid material. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the drawings, in which: wherein: Figure 1 A flowchart of the efficient cleaning method for the preceding alfalfa field of the embodiments of the present application; Figure 2 A photo of the on-site comparison test on a certain alfalfa field; Figure 3 An effect diagram of the alfalfa field after the method of embodiment 1 of the present application is used; Figure 4 An effect diagram of the alfalfa root system after the method of embodiment 1 of the present application is used; Figure 5 An effect diagram of the alfalfa root system after the method of comparative example 1 is used; DETAILED DESCRIPTION Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0017] The efficient cleaning method for the preceding alfalfa field of the embodiments of the present application is described below with reference to the accompanying drawings.

[0018] As Figure 1As shown, the embodiment of the present application proposes a high-efficiency cleaning method for the previous alfalfa field, which comprises the following steps: S1, mowing the alfalfa in the alfalfa field during the vigorous growth period of the alfalfa, and the stubble height after mowing is 3-8 cm. The present scheme is implemented during the vigorous growth period of the alfalfa, so as to ensure that all the alfalfa in the field sprouts and avoids omission. The stubble after mowing eliminates the shading of branches and leaves on the lower plants, so as to ensure that all the plants contact the pesticide.

[0019] S2, spraying the herbicide on the alfalfa field 3-6 days after mowing. The recovery time is reserved after mowing, so as to ensure that there are enough new leaves to contact and absorb the pesticide.

[0020] S3, covering the alfalfa field with the grass-proof ground cloth after spraying, and the covering time is 7-15 days. Through the covering treatment, the pesticide can be further ensured to be fully absorbed by the root system, so as to play a better root cleaning effect. S4, observing the decomposition condition of the alfalfa root system, and when the alfalfa root system is completely decomposed, the ground cloth is removed. S5, removing the surface residues to prepare for planting other plants.

[0021] The method of the embodiment of the present application can realize the effective and complete removal of the alfalfa in the alfalfa field at one time, avoid the production restriction and engineering cost investment caused by the alfalfa re-growth, reduce the restriction on the growth of subsequent agricultural and forestry plants, lay a solid foundation for the efficient re-use of the land in the later period, and improve the agricultural and forestry production value. The operation is simple, convenient and efficient.

[0022] In some embodiments, the herbicide comprises glyphosate, gasoline, laundry detergent and water, 250-400 g of glyphosate water agent, 5-10 mL of gasoline and 5-15 g of laundry detergent are added to every 20 L of water. The formula can improve the removal effect of alfalfa and its root system.

[0023] In some embodiments, in step S2, for the alfalfa field with good water and nutrient conditions, the herbicide is sprayed 3 days after mowing to prevent the alfalfa from recovering rapidly, and the herbicide can be sprayed 4-6 days after mowing for other alfalfa fields.

[0024] In some embodiments, in step S3, the covering time of the grass-proof ground cloth is 10 days.

[0025] In some embodiments, in step S5, the surface residues are removed by mechanical equipment or manually.

[0026] In some embodiments, in step S1, the vigorous growth period of the alfalfa is May-June.

[0027] In some embodiments, the grass-proof ground cloth completely covers the alfalfa field after mowing.

[0028] In some embodiments, the weed-preventing cloth is spliced by multiple cloth pieces to prevent gaps between the cloth pieces, which weakens the efficacy of the herbicide. The spliced parts are overlapped and fixed on the alfalfa field by pins to improve the stability of the cloth and prevent the cloth from being blown away by the wind.

[0029] In some embodiments, bricks are placed at the spliced parts of the weed-preventing cloth to further prevent the cloth from being blown away by the wind.

[0030] In some embodiments, the weed-preventing cloth is made of polylactic acid material. The polylactic acid material is an environmentally friendly and biodegradable material that avoids soil pollution caused by plastic residues.

[0031] The application will be further described below through specific embodiments.

[0032] Embodiment 1 As shown in Figure 2 , a piece of alfalfa field was selected for a comparative test, Figure 2 in which the alfalfa was cleaned in the black area using the method of the embodiment of the application, and the other parts were cleaned using the method of Comparative Example 1.

[0033] An efficient cleaning method for a previous alfalfa field, comprising the following steps: (1) The alfalfa was cut once in early May, with a stubble height of about 5 cm.

[0034] (2) The alfalfa was sprayed with herbicide 5 days after cutting. In a 20 L sprayer, water was added to the brim, and herbicide was added: glyphosate water 300 g, gasoline 5 mL, and laundry detergent 10 g.

[0035] (3) After spraying the herbicide, the alfalfa was covered with the weed-preventing cloth to allow the alfalfa to decompose naturally, and the cloth was removed after 10 days. It was observed that, as shown in Figure 3 , Figure 4 , the alfalfa was completely withered, and the underground root system was atrophied and dead.

[0036] Comparative Example 1 Only a single herbicide spraying method (with cutting or without cutting) or only a single cloth covering method was used. It was observed that, as shown in Figure 5 , the aboveground part was withered, but the root system remained alive after being dug up.

[0037] In this disclosure, the terms "some embodiments," "an embodiment," or the like, mean that the particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-described terms in various places in the specification are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Moreover, the terminology used in the specification is for the purpose of describing the particular versions or examples only and is not intended to be limiting The use of particular terminology when describing a particular feature or aspect is not intended to limit the spirit and scope of the present disclosure and is for description only.

[0038] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present disclosure, and that those skilled in the art can make changes, modifications, substitutions and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A method of efficient clean-up of a previous alfalfa field, characterized in that, The method comprises the following steps: S1, mowing alfalfa in the alfalfa field in the vigorous growth period of alfalfa, and the stubble height of mowing is 3-8 cm; S2, spraying herbicide on the alfalfa field 3-6 days after mowing; S3, covering the alfalfa field with weed-preventing cloth after spraying, and the covering time is 7-15 days; S4, observing the decomposition condition of alfalfa root system, and removing the cloth when the alfalfa root system is completely decomposed; S5, removing the surface residues and preparing for planting other plants.

2. The method of efficient clean-up of a previous alfalfa field according to claim 1, characterized in that, The herbicide comprises glyphosate, gasoline, washing powder and water, 250-400 g of glyphosate water agent, 5-10 mL of gasoline and 5-15 g of washing powder are added to 20 L of water.

3. The method of efficient cleanup of a previous alfalfa field according to claim 1, characterized in that, In step S2, the herbicide is sprayed 3 days after mowing for the alfalfa field with good water and nutrient conditions, and the herbicide is sprayed 4-6 days after mowing for other alfalfa fields.

4. The method of efficient cleanup of a previous alfalfa field according to claim 1, characterized in that, In step S3, the covering time of the weed-preventing cloth is 10 days.

5. The method of efficiently cleaning a previous alfalfa field of claim 1, wherein, In step S5, the surface residues are removed by mechanical equipment or manually.

6. The method of efficient cleanup of a previous alfalfa field according to claim 1, wherein, In step S1, the vigorous growth period of alfalfa is May-June.

7. The method of efficient cleanup of a previous alfalfa field according to claim 1, wherein, The weed-preventing cloth completely covers the mowed alfalfa field.

8. The method of efficient cleanup of a previous alfalfa field according to claim 1, wherein, The weed-preventing cloth is formed by splicing a plurality of cloth blocks, the splicing positions are overlapped with each other and are fixed on the alfalfa field by using pins.

9. The method of efficiently cleaning a previous alfalfa field of claim 1, wherein, Bricks are arranged at the splicing positions of the weed-preventing cloth.

10. The method of efficient cleanup of a previous alfalfa field according to claim 1, wherein, The weed-preventing cloth is made of polylactic acid.

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