Point-line type fertilization method for sugarcane

Abstract

The invention provides a point-line type fertilization method for sugarcane. When the newly planted sugarcane is planted, single-point fertilization (sugarcane seed bud placing position) is adopted; in the tillering stage, four-point fertilization is conducted at points (3), (4), (5) and (6), and parallel line type fertilization is conducted on sugarcane planting furrows. When perennial root sugarcanes are planted, four-point fertilization of (3), (4), (5) and (6) is adopted by adopting a sugarcane planting section isosceles trapezoid, and parallel line type fertilization is performed on sugarcane planting furrows; performing double-point fertilization on points (4) and (6) of a sugarcane planting section on perennial root sugarcanes in the tillering stage of the sugarcanes, and performing parallel line type fertilization on sugarcane planting furrows; the positions of the points (3) and (5) are 20-30 cm wide and 30 cm deep on the left and right sides of the sugarcane; the positions of the points (4) and (6) are 40-60 cm wide and 10 cm deep on the left and right sides of the sugarcane. The fertilizing method reduces the fertilizer consumption, improves the fertilizer utilization rate, and promotes cost reduction and efficiency improvement of sugarcane farmers; the method is a high-efficiency management approach for realizing a comprehensive target of high-quality sugarcane production.

Description

Technical Field

[0001] The invention relates to the field of agricultural fertilization, in particular to a sugarcane point-line fertilization method. Background Art

[0002] Sugar is an important agricultural product in my country. Sugarcane is the main cash crop for producing sugar, and its sugar production accounts for about 80% of the global production. Sugarcane has a large biomass and a long growth cycle. It is a typical C4 high-photoefficiency plant and requires a large amount of nutrients. At present, the domestic sugarcane planting area is about 17 million mu, mainly concentrated in southwest Yunnan, central and southern Guangxi, western Guangdong, and northern Hainan. Sugarcane planting is mainly perennial root sugarcane planting. After one year of new planting, the perennial root period is generally about 3-4 years, and the field management method is relatively simple.

[0003] Research has found that the amount of fertilizer required by sugarcane varies greatly during different growth and development stages. At present, sugarcane production in sugarcane areas mainly applies fertilizer to the surface once or in batches. Although this fertilization method makes up for some of the defects of the traditional fertilization method that sugarcane requires different amounts of fertilizer at different growth stages, it only adjusts the amount of fertilizer and the amount of pesticide added, and there is no targeted and precise fertilization, resulting in insufficient exploration of sugarcane yield and sugar potential.

[0004] Therefore, there is an urgent need for a sugarcane fertilization method to solve the problem of low sugarcane yield and low sugar content. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a point-line fertilization method for sugarcane to solve some of the problems raised in the above-mentioned background technology. The present invention meets the nutrient demand of sugarcane during the whole growth period by mechanized, uniform, quantitative, positioned, fixed-point and timed fertilization during the management of sugarcane perennial roots, reduces the amount of fertilizer, improves the fertilizer utilization rate, and promotes sugarcane farmers to reduce costs and increase efficiency. At the same time, the present invention collaboratively completes the ridge opening and loosening of stumps to improve soil ventilation conditions, ensuring that the sugarcane heads and underground sugarcane roots obtain sufficient oxygen to promote germination. The purpose is to improve the sugarcane fertilization system and achieve simple and efficient management of sugarcane with the comprehensive goals of high-yield, green, efficient, ecological and high-quality production.

[0006] In order to achieve the above object, the present invention is implemented through the following technical scheme: a sugarcane point-line fertilization method, comprising the following steps:

[0007] When the sugarcane is newly planted, single-point fertilization is applied on the sugarcane planting profile when the sugarcane is planted; during the tillering period, four-point fertilization is applied on the sugarcane planting profile at points (3), (4), (5) and (6), and parallel fertilization is applied along the sugarcane planting furrows;

[0008] When the sugarcane is ratoon-rooted, four-point fertilization is carried out at points (3), (4), (5) and (6) of the isosceles trapezoid of the sugarcane planting section during ratoon management, and the sugarcane planting ditch is fertilized in parallel lines; during the sugarcane tillering period, two-point fertilization is carried out at points (4) and (6) of the sugarcane planting section, and the sugarcane planting ditch is fertilized in parallel lines;

[0009] The location of single-point fertilization is where the sugarcane seed buds are placed;

[0010] (3) The location of the points is: 40-60 cm wide and 10 cm deep on the left side of the sugarcane planting;

[0011] (4) The location of the point is: a point 20-30 cm wide and 30 cm deep on the left side of the sugarcane planting;

[0012] (5) The location of the points is: 40-60 cm wide and 10 cm deep on the right side of the sugarcane planting;

[0013] (6) The location of the point is: 20-30 cm wide and 30 cm deep on the right side of the sugarcane planting.

[0014] The specific amount of fertilizer for sugarcane is determined based on the actual soil nutrient test results and a certain proportion of organic matter. The elements required for sugarcane include macronutrients such as N, P, K, and micronutrients such as Ca, Mg, Fe, Mn, and Zn. The effective amount of macronutrients in the soil is generally low and cannot meet the needs of the entire growth period of sugarcane. The final formula and specific amount of fertilizer need to be calculated based on the actual soil nutrient test results, the amount required for sugarcane growth, and the fertilizer utilization rate. At the same time, according to the lack of trace elements, timely supplement the trace elements. The amount of fertilizer applied during planting / perennial root management is 25% of the total amount of fertilizer, and the amount of fertilizer applied during the tillering period is 75% of the total amount of fertilizer.

[0015] Furthermore, the fertilizer is selected as an organic-inorganic compound fertilizer with a strength higher than 30N and a moisture absorption rate lower than 5%;

[0016] Organic-inorganic compound fertilizers include formula compound fertilizers including N, P2O5, K2O and organic matter, or compound fertilizers + bio-organic fertilizers;

[0017] Compound fertilizer is a formula compound fertilizer including N, P2O5, and K2O; biological organic fertilizer is an organic fertilizer produced with sugar factory by-product filter mud, bagasse, and potassium humate as organic materials.

[0018] Furthermore, the first formula of organic-inorganic compound fertilizer for sugarcane is formed by machine mixing and granulation to form 2-4 mm spherical particles; the second formula of organic-inorganic compound fertilizer for sugarcane is formed by mechanical mixing of chemical fertilizer compound fertilizer and biological organic fertilizer to form 2-4 mm spherical particles after machine granulation.

[0019] Furthermore, the method also includes: the amount of fertilizer applied during sowing / perennial root management is 25% of the total amount of fertilizer applied, and the amount of fertilizer applied during the tillering period is 75% of the total amount of fertilizer applied.

[0020] Furthermore, in the fertilization process of the method, a fully biodegradable film is selected for full film coverage; the width of the fully biodegradable film is 1.5 to 2.8 m, the thickness is 0.012-0.013 mm, and the water vapor permeability is less than 400 g / (m 2 , 24h), the nominal strain at longitudinal fracture after aging for 100h is ≥120%, and the nominal strain at transverse fracture after aging for 100h is ≥200%.

[0021] Beneficial Effects

[0022] 1. This invention promotes the increase of sugarcane production and sugar content

[0023] The sugarcane point-line fertilization method adds a certain proportion of organic matter to the sugarcane-specific organic-inorganic compound fertilizer, which concentrates the fertilizer on the growth point of the sugarcane root system, improves the current sugarcane fertilization technology for sugarcane production, from surface fertilization to deep fertilization, and from fertilization at the sugarcane stump to fertilization at the most suitable distance from the side, thereby increasing sugarcane yield and sugar content. Organic matter is rich in a variety of beneficial substances, including organic acids, peptides and other substances, as well as rich nutrients such as nitrogen, phosphorus and potassium, which can provide sufficient nutrients for sugarcane and have a lasting fertilizer effect. The yield and sucrose content of newly planted sugarcane can be increased by 559.70-716.18 kg / mu and 0.09-0.43 percentage points respectively; the yield and sucrose content of perennial sugarcane can be increased by 1158.87-1179.70 kg / mu and 0.10-0.43 percentage points respectively.

[0024] 2. This invention improves the partial productivity of fertilizers

[0025] The present invention helps the sugarcane root system absorb fertilizer, reduces fertilizer surface loss, improves fertilizer utilization efficiency, and improves fertilizer partial productivity. Compared with the control, the fertilizer partial productivity of newly planted sugarcane increased by 13.58kg / kg and 18.09kg / kg, respectively, with an increase of 9.14% and 11.53%. Compared with the control, the fertilizer partial productivity of perennial sugarcane increased by 28.13kg / kg and 29.79kg / kg, respectively, with an increase of 18.06% and 18.27%. The improvement of fertilizer partial productivity fully demonstrates the contribution of fertilizer and soil nutrients to sugarcane yield.

[0026] 3. This invention avoids the problem of "white pollution"

[0027] This sugarcane point-line fertilization method and the covering of the sugarcane with a fully biodegradable film can not only increase temperature and retain water and moisture, promote germination, and have a weed control effect, but also degrade efficiently, eliminating the problems of ordinary polyethylene mulch being difficult to degrade and recycle.

[0028] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and other objects, features and advantages of the present application will become more apparent by describing in more detail the exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0030] Figure 1 A schematic diagram of fertilization positions of a sugarcane point-line fertilization method according to the present invention;

[0031] Figure 2 This is a schematic diagram of the fertilization position when planting new sugarcane in a sugarcane point-line fertilization method of the present invention;

[0032] Figure 3 This is a schematic diagram of the fertilization position during the tillering period of newly planted sugarcane according to a sugarcane point-line fertilization method of the present invention;

[0033] Figure 4 A schematic diagram of fertilization positions during management of perennial roots of sugarcane according to a sugarcane point-line fertilization method of the present invention;

[0034] Figure 5 A schematic diagram of the fertilization position of perennial root sugarcane in the tillering period of a sugarcane point-line fertilization method of the present invention;

[0035] Specific numbers in the figure:

[0036] (1) and (2) are the fertilization profile points when newly planted sugarcane is planted;

[0037] The locations of points (3) and (7) are: 20-30 cm wide and 30 cm deep on the left side of the sugarcane planting;

[0038] (4) The location of the points is: 40-60 cm wide and 10 cm deep on the left side of the sugarcane planting;

[0039] The locations of points (5) and (9) are: 20-30 cm wide and 30 cm deep on the right side of the sugarcane planting;

[0040] The locations of points (6) and (8) are: 40-60 cm wide and 10 cm deep on the right side of the sugarcane planting;

[0041] (10), (11), (12) and (13) are the profile points of sugarcane planting locations. DETAILED DESCRIPTION

[0042] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0043] Sugarcane has a great difference in fertilizer requirements at different growth stages, and generally shows the characteristics of less fertilizer requirements at the two ends and more fertilizer requirements in the middle. Bud stage: mainly relying on the nutrients stored in the seedlings themselves, no need to absorb fertilizer from the outside; seedling growth stage: fertilizer requirements are extremely low, but fertilizer requirements are urgent, and the demand for nitrogen, phosphorus, and potassium fertilizers accounts for less than 1%, with a slightly higher demand for nitrogen, followed by phosphorus and potassium; tillering stage: fertilizer requirements gradually increase, and the absorption of the three major elements of nitrogen, phosphorus, and potassium accounts for 6%, 5.5%, and 3%; elongation stage: the key fertilization period for sugarcane, the absorption of nitrogen is about 50% to 60%, and the absorption of phosphorus and potassium is 70% each; maturity stage: fertilizer requirements decrease, nitrogen absorption accounts for 30% to 40%, phosphorus and potassium each account for about 20%.

[0044] A point-line fertilization method for sugarcane is a green and environmentally friendly technology that integrates mechanization, special fertilizers, supporting agricultural cultivation measures, and fully biodegradable films. Specifically, it is a fertilization method that combines mechanized ridging and loosening of stumps with fertilizer application during sugarcane planting, perennial root management, and tillering periods. In this process, organic and inorganic compound fertilizers are evenly applied in strips at regular intervals, quantitative intervals, and locations according to the actual growth requirements of sugarcane on both sides of the sugarcane basket during sugarcane planting / perennial root management and root growth point locations during tillering. In addition, the current sugarcane fertilization technology has been improved from surface fertilization to deep fertilization, and fertilization at the sugarcane stump position has been improved to fertilization at a certain distance from the side, which reduces fertilizer loss and improves fertilizer utilization. The present invention not only determines the different distances and depths of fertilizing the root growth point during sugarcane planting / perennial root management and tillering period, but also describes the sugarcane point-line fertilization method in detail according to basic sugarcane planting conditions such as different terrains, different geological conditions, different field row spacings, different sugarcane basket depths, etc.

[0045] The key to the point-line fertilization method for sugarcane is to select organic-inorganic compound fertilizers that are suitable for mechanized application and can meet the growth requirements of sugarcane throughout its entire growth period, the matching covering of fully biodegradable films to preserve heat, water and moisture, and the rational allocation of manpower and material resources to achieve an efficient, green and high-quality sugarcane production strategy.

[0046] Embodiment 1:

[0047] The present invention provides a technical solution: a sugarcane point-line fertilization method. For the fertilization method, please refer to the attached Figure 1 , Figure 2 and Figure 3Taking the overseas Chinese dry slope sugarcane in Gengma Dai and Wa Autonomous County, Lincang City, Yunnan Province as an example, the main steps include:

[0048] Step 1. Select a round-granular fertilizer that meets the intensity of mechanized fertilization, with a smooth surface, a particle strength higher than 30N, low moisture absorption, no caking, no sticking, no crushing by hand, and a moisture absorption rate lower than 5% for sugarcane. Formula 1: total nutrients ≥33%, N+P2O5+K2O: 17-7-9, organic matter content ≥15% (the organic matter part is potassium humate, a by-product of sugarcane); Formula 2: compound fertilizer (total nutrients ≥36%, N+P2O5+K2O: 16-7-13) + biological organic fertilizer (total nutrients ≥5%, 45% organic matter, effective live bacteria 200 million / g, moisture 10%).

[0049] Step 2. The terrain is a gentle slope of dry land, the soil is red soil, the field row spacing is 1.2m, and the fertilizer amount setting of formula one is: the point fertilizer amount at the time of sowing / perennial root management is 25% of the total fertilizer amount of 120kg / mu, that is, 30kg / mu; the point line fertilizer amount during the tillering period is 75% of the total fertilizer amount of 120kg / mu, that is, 90kg / mu; the fertilizer amount setting of formula two is: the point line fertilizer amount at the time of sowing / perennial root management is 25% of the total fertilizer amount of 80kg / mu + 120kg / mu, that is, 24kg / mu + 30kg / mu; the point line fertilizer amount during the tillering period is 75% of the total fertilizer amount of 80kg / mu + 120kg / mu, that is, 56kg / mu + 90kg / mu.

[0050] Step 3: For newly planted sugarcane during planting, single-point fertilization is applied on the sugarcane planting profile (fertilization is applied at the seed bud placement position). For perennial root management of perennial sugarcane, four-point fertilization is applied at points (3), (4), (5) and (6) on the sugarcane planting profile. Parallel line fertilization is applied in the sugarcane planting ditch (fertilization is applied by connecting the points in the parallel line of the sugarcane planting ditch into a line).

[0051] Step 4: Select a fully biodegradable film for full film coverage. The fully biodegradable film is 1.5m wide, 0.012mm thick, and has a water vapor permeability of 395g / (m 2 , 24h), the nominal strain at break (longitudinal) after aging for 100h is 227%, and the nominal strain at break (transverse) after aging for 100h is 438%.

[0052] Step 5. During the tillering period of sugarcane, four-point fertilization is carried out at points (3), (4), (5) and (6) of the sugarcane planting profile for newly planted sugarcane, and parallel line fertilization is carried out in the sugarcane planting furrow (the parallel lines of the sugarcane planting furrow are connected to form a line fertilization); for perennial sugarcane, two-point fertilization is carried out at points (4) and (6) of the sugarcane planting profile, and parallel line fertilization is carried out in the sugarcane planting furrow (the parallel lines of the sugarcane planting furrow are connected to form a line fertilization).

[0053] (3) The location of the point is: a point 60 cm wide and 10 cm deep on the left side of the sugarcane planting;

[0054] (4) The location of the point is: a point 30 cm wide and 30 cm deep on the left side of the sugarcane planting;

[0055] (5) The location of the point is: a point 60 cm wide and 10 cm deep on the right side of the sugarcane planting;

[0056] (6) The location of the point is: 30 cm wide and 30 cm deep on the right side of the sugarcane planting.

[0057] Fertilization location and depth should be subdivided according to actual geographical environment and soil type:

[0058] Dry flat land: The flat land itself has no slope, and the distance and depth of mechanical fertilization only need to be determined according to the row spacing and the depth of the sugarcane stump: when the sugarcane row spacing is 1.2m, the distance of fertilization points during the tillering period is 30cm wide and 30cm deep, and 60cm wide and 10cm deep on both sides of the sugarcane; when the sugarcane row spacing is 0.8m, the distance of fertilization points during perennial root management is 30cm wide and 30cm deep, and 60cm wide and 10cm deep on both sides of the sugarcane, and the distance of fertilization during the tillering period is 40cm on both sides of the sugarcane.

[0059] Dry terrace: The terrace is essentially flat land, but due to its generally narrow characteristics, different solutions are required for digging horizontal and vertical trenches. When digging vertical trenches in narrow areas, mechanization driven by large tractors is more difficult to achieve, and small hydraulic mechanized fertilization is required. The fertilization distance and depth are the same as those on flat land.

[0060] For dry slope land, when the sugarcane planting area is a slope land, the distance and depth of mechanical fertilization need to be determined based on the slope, row spacing and sugarcane stump depth. Since the sugarcane root system is geotropic, the fertilization position of the sugarcane root growth point needs to be adjusted when facing different slopes, and the dry flat land fertilization method can also be applied.

[0061] When the soil is sandy, the roots are easier to grow deep, and the fertilization distance remains unchanged, but the fertilization depth should be appropriately 5-10cm;

[0062] When the soil is clay, the roots should not be too deep, and the fertilization distance remains unchanged, but the fertilization depth should be appropriately shallow, 5 cm;

[0063] When the soil is loam, just apply fertilizer normally according to the above-mentioned fertilization positions for different terrains.

[0064] In this embodiment, the organic-inorganic compound fertilizer for sugarcane includes two formulas. Formula 1 of the organic-inorganic compound fertilizer for sugarcane is: total nutrients ≥33%, organic matter content ≥15% (the organic matter is sugarcane byproduct molasses potassium humate); Formula 2 of the organic-inorganic compound fertilizer for sugarcane is: formula compound fertilizer + biological organic fertilizer (produced with sugar factory byproduct filter mud, bagasse, and potassium humate as organic materials), the total nutrients of the chemical fertilizer compound fertilizer are 36%, that is, N, P2O5, K2O=16-7-13, the N+P2O5+K2O of the biological organic fertilizer is ≥5%, the organic matter content is ≥45%, the number of effective live bacteria is ≥200 million / g, 5.5≤pH≤8.5, and the moisture content is ≤13%.

[0065] In this embodiment, the organic-inorganic compound fertilizer formula for sugarcane is all formed into 2-4 mm spherical particles after machine mixing and granulation.

[0066] In this embodiment, the mechanical fertilization distance, depth, fertilizer amount, and the mechanical fertilization distance and depth are adjusted according to the terrain, geological conditions, field row spacing, sugarcane basket depth, planting period, growth period, sugarcane variety, etc. The sugarcane row spacing in this plot is 120 cm, and the fertilization position during the tillering period is 30 cm wide and 30 cm deep points on the left and right sides of the sugarcane planting and 60 cm wide and 10 m deep points on the left and right sides; the fertilization position during the perennial root management of perennial root sugarcane is 30 cm wide and 30 cm deep points on the left and right sides of the sugarcane planting and 60 cm wide and 10 m deep points on the left and right sides of the sugarcane planting, and the fertilization position during the tillering period is 60 cm wide and 10 m deep points on the left and right sides of the sugarcane planting.

[0067] In this embodiment, the application amount of the fertilizer is determined. The specific fertilizer amount is specified by soil testing and formulating as much as possible according to various factors such as variety, target yield, soil fertility, etc. The organic matter content of sugarcane fertilization input must account for a certain proportion. The specific fertilizer amount is 120 kg / mu of 33% organic-inorganic compound fertilizer in formula 1 and 80 kg / mu of 36% compound fertilizer + 120 kg / mu of biological organic fertilizer in formula 2. According to different periods, the fertilizer amount setting of Formula 1 is: the point-line fertilizer amount at planting time / perennial root management is 25% of the total fertilizer amount of 120kg / mu, that is, 30kg / mu; the point-line fertilizer amount during the tillering period is 75% of the total fertilizer amount of 120kg / mu, that is, 90kg / mu; the fertilizer amount setting of Formula 2 is: the point-line fertilizer amount at planting time / perennial root management is 25% of the total fertilizer amount of 80kg / mu + 120kg / mu, that is, 24kg / mu + 30kg / mu; the point-line fertilizer amount during the tillering period is 75% of the total fertilizer amount of 80kg / mu + 120kg / mu, that is, 56kg / mu + 90kg / mu.

[0068] In this embodiment, the width and thickness, water vapor permeability, nominal strain at break after aging for 100 hours (longitudinal), nominal strain at break after aging for 100 hours (transverse) and other indicators of the fully biodegradable film all comply with the GB / T35795-2017 "Fully Biodegradable Agricultural Ground Covering Film" standard.

[0069] Comparative Example 1

[0070] Experimental method: According to a sugarcane point-line fertilization method provided in Example 1, taking the point-line fertilization of newly planted and perennial sugarcane as an example, a single-point one-time fertilization (fertilization at the seed bud placement position) of the sugarcane planting profile is adopted only when planting / perennial management. The fertilizer amount of formula 1 is 120kg / mu, and the fertilizer amount of formula 2 is 80kg / mu of compound fertilizer + 120kg / mu of organic fertilizer. No fertilizer is applied during the tillering period.

[0071] Experimental results: As shown in Table 1, compared with Example 1 and Comparative Example 1, the sugarcane fertilization method has a significant promoting effect on sugarcane yield, sugar content and fertilizer utilization rate. By changing the fertilization position and method, the point-line fertilization of sugarcane in different growth stages significantly increased the single stem weight, yield and fertilizer partial productivity of sugarcane. Compared with Comparative Example 1, the yield and sucrose content of newly planted sugarcane in Formula 1 of Example 1 increased by 716.18 kg / mu and 0.43 percentage points respectively; the yield and sucrose content of perennial sugarcane increased by 1179.70 kg / mu and 0.09 percentage points respectively; the yield and sucrose content of newly planted sugarcane in Formula 2 of Example 1 increased by 559.70 kg / mu and 0.10 percentage points respectively; the yield and sucrose content of perennial sugarcane increased by 1158.87 kg / mu and 0.43 percentage points respectively.

[0072] Table 1 Effects of different fertilization methods on yield, sucrose content and fertilizer partial productivity of newly planted and ratoon sugarcane

[0073]

[0074] Example 2

[0075] A point-line fertilization method for sugarcane, using a typical fertilization method of the present invention, taking sugarcane in dry terrace land of Mengding Town, Gengma Dai and Wa Autonomous County, Lincang City, Yunnan Province as an example, comprises the following steps:

[0076] Step 1. Select round-granular fertilizer that meets the intensity of mechanized fertilization, with a smooth surface, particle strength higher than 30N, low moisture absorption, no caking, no stickiness, and sugarcane compound fertilizer (total nutrients ≥ 36%, N+P2O5+K2O: 16-7-13) + biological organic fertilizer (total nutrients ≥ 5%, 45% organic matter, effective live bacteria 200 million / g, moisture 10%).

[0077] Step 2: The terrain is dry terrace, the soil is red soil, the field row spacing is 1.2m, and the point fertilizer amount during planting is 25% of the total fertilizer amount of 120kg / mu, that is, 30kg / mu; the point line fertilizer amount during the tillering period is 75% of the total fertilizer amount of 120kg / mu, that is, 90kg / mu, and the fertilizer amount for each line is 22.5kg / mu;

[0078] Step 3: For newly planted sugarcane during planting, single-point fertilization is applied on the sugarcane planting profile (fertilization is applied at the position where the seed buds are placed) and parallel-line fertilization is applied in the sugarcane planting ditch (fertilization is applied by connecting the points in the parallel lines of the sugarcane planting ditch into a line).

[0079] Step 4: Select a fully biodegradable film for full film coverage. The fully biodegradable film is 1.5m wide, 0.012mm thick, and has a water vapor permeability of 395g / (m 2 , 24h), the nominal strain at break (longitudinal) after aging for 100h is 227%, and the nominal strain at break (transverse) after aging for 100h is 438%.

[0080] Step 5: During the tillering period of sugarcane, fertilize the newly planted sugarcane at points (3), (4), (5) and (6) of the sugarcane planting profile in a four-point isosceles trapezoid (points with a width of 30 cm and a depth of 30 cm on the left and right sides of the sugarcane planting and points with a width of 60 cm and a depth of 10 m on the left and right sides) in parallel to the sugarcane planting ditch (fertilize in a linear manner by connecting the points parallel to the sugarcane planting ditch);

[0081] Comparative Example 2

[0082] Experimental method: According to a sugarcane point-line fertilization method provided in Example 2, taking the newly planted sugarcane point-line fertilization as an example, Comparative Example 2 adopts single-point fertilization (fertilization at the seed bud placement position) of the sugarcane planting profile according to the above steps 1, 3, and 4 when planting, and parallel line fertilization of the sugarcane planting ditch (connecting the parallel lines of the sugarcane planting ditch into a line fertilization), and the fertilizer amount is 120kg / mu 25%, that is, 30kg / mu, and step 5 fertilization during the tillering period is also based on single-point fertilization at the sugarcane growth point, parallel line fertilization of the sugarcane planting ditch (connecting the parallel lines of the sugarcane planting ditch into a line fertilization), and the fertilizer amount is 120kg / mu 75%, that is, 90kg / mu.

[0083] Experimental results: As shown in Table 2, by comparing the schemes of Example 2 and Comparative Example 2, it can be seen that different fertilization positions and fertilization methods have a significant effect on sugarcane yield, sugar content and fertilizer utilization rate. Point-line fertilization at different growth stages of sugarcane significantly increased the single stem weight, yield and fertilizer partial productivity of sugarcane. Compared with Comparative Example 2, the yield, sucrose content and fertilizer partial productivity of newly planted sugarcane in Example 2 increased by 1149.05 kg / mu, 0.47 percentage points and 29.01 kg / kg, respectively, with increases of 21.03%, 3.30% and 31.03%, respectively.

[0084] Table 2 Effects of different fertilization methods on newly planted sugarcane yield, sucrose content and fertilizer partial productivity

[0085]

[0086] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A sugarcane point-line fertilization method, characterized in that: The method comprises the following steps: When the sugarcane is newly planted, single-point fertilization is applied to the newly planted sugarcane on the sugarcane planting profile; during the sugarcane tillering period, four-point fertilization is applied to the newly planted sugarcane at points (3), (4), (5) and (6) on the sugarcane planting profile, and parallel fertilization is applied to the sugarcane planting furrows; When the sugarcane is perennial sugarcane, four-point fertilization is performed on the perennial sugarcane at points (3), (4), (5) and (6) of the sugarcane planting section, and the fertilization is performed in parallel lines with the sugarcane planting furrows; during the sugarcane tillering period, two-point fertilization is performed on the perennial sugarcane at points (4) and (6) of the sugarcane planting section, and the fertilization is performed in parallel lines with the sugarcane planting furrows; The location of the single-point fertilization is the location where the sugarcane seed buds are placed; The location of point (3) is: a point 40-60 cm wide and 10 cm deep on the left side of the sugarcane planting; The location of point (4) is: a point 20-30 cm wide and 30 cm deep on the left side of the sugarcane planting; The location of point (5) is: a point 40-60 cm wide and 10 cm deep on the right side of the sugarcane planting; The position of point (6) is 20-30 cm wide and 30 cm deep on the right side of the sugarcane planting.

2. The fertilization method according to claim 1, characterized in that: The fertilizer in the method is selected from organic and inorganic compound fertilizers with a strength higher than 30N and a moisture absorption rate lower than 5%; The organic-inorganic compound fertilizer includes a formula compound fertilizer including N, P2O5, K2O and organic matter or a compound fertilizer + biological organic fertilizer; The compound fertilizer is a formula compound fertilizer including N, P2O5, and K2O; the biological organic fertilizer is an organic fertilizer produced using sugar factory byproduct filter mud, bagasse, and potassium humate as organic materials.

3. The fertilization method according to claim 1, characterized in that: The first formula of the organic-inorganic compound fertilizer for sugar cane is formed by machine mixing and granulation to form 2-4 mm spherical particles; the second formula of the organic-inorganic compound fertilizer for sugar cane is formed by mechanical mixing of chemical fertilizer compound fertilizer and biological organic fertilizer to form 2-4 mm spherical particles.

4. The fertilization method according to claim 1, characterized in that: The method further comprises: the amount of fertilizer applied during sowing / perennial root management is 25% of the total amount of fertilizer applied, and the amount of fertilizer applied during the tillering period is 75% of the total amount of fertilizer applied.

5. The fertilization method according to claim 1, characterized in that: In the fertilization process of the method, a fully biodegradable film is selected for full film coverage; the width of the fully biodegradable film is 1.5-2.8m, the thickness is 0.012-0.013mm, and the water vapor permeability is less than 400g / (m 2 , 24h), the nominal strain at longitudinal fracture after aging for 100h is ≥120%, and the nominal strain at transverse fracture after aging for 100h is ≥200%.

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