CN112471169A

CN112471169A - Sugarcane root-promoting lodging-resistant yield-increasing regulator and preparation method and application thereof

Info

Publication number: CN112471169A
Application number: CN202011322767.8A
Authority: CN
Inventors: 董志强; 王维瓒; 闫鹏; 黄成丰; 卢霖; 庞天; 徐江; 覃文宪
Original assignee: Institute of Crop Sciences of Chinese Academy of Agricultural Sciences; Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences
Current assignee: Institute of Crop Sciences of Chinese Academy of Agricultural Sciences; Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-03-12
Anticipated expiration: 2040-11-23
Also published as: CN112471169B

Abstract

The invention relates to a sugarcane root-promoting lodging-resistant yield-increasing regulator and a preparation method and application thereof. The regulator comprises the following components: 15-20g/L of sodium naphthalene acetate, 50-80g/L of hymexazol, 150g/L of ethephon 110-. The active agent and the spreader are selected from one or more of Tween 20, Tween 60 and Triton. The regulating agent can obviously improve the number of the seed roots and the seedling roots of the sugarcane, and the root system is developed; strong tillering capacity, high stem forming rate, strong and strong stem, strong lodging resistance, high sugar content and high sugar yield; the lodging rate of the sugarcane is reduced by 17.40-37.50%, the yield per mu is improved by 11.67-51.20%, the sugar content per mu is improved by 14.62-55.19%, and the sugar content of the sugarcane stalks is improved by more than 4%. Meanwhile, the product has the characteristics of low cost, convenient use, little field residue and the like, is easy to popularize and apply, and has a positive promoting effect on the sugarcane production in China.

Description

Sugarcane root-promoting lodging-resistant yield-increasing regulator and preparation method and application thereof

Technical Field

The invention relates to a plant growth regulator, in particular to a preparation method and application of a sugarcane root-promoting lodging-resistant yield-increasing regulator.

Background

Sugarcane is a main sugar crop, and cane sugar is an indispensable food in the life of people in China. The sugarcane is warm, wet and fertile, has long growth period and is mainly distributed in southern tropical and subtropical areas with the north latitude of 24 degrees, such as Guangxi, Guangdong, Taiwan, Fujian, Hainan, Yunnan, Sichuan and the like. In the growth process of the sugarcane, the sugarcane is frequently subjected to large-area lodging due to frequent typhoon, season wind and heavy rainfall, the yield and the quality of the sugarcane are seriously influenced, the supply condition of cane sugar in daily life of people is directly influenced, and the development of the sugarcane industry is influenced, so that the sugarcane lodging-resistant technical research is developed, the lodging rate of the sugarcane in a field is reduced, the high and stable yield of the sugarcane is guaranteed, and the sugarcane cultivation method has important practical significance for the sustainable development of the sugarcane industry.

Comprehensive analysis finds that sugarcane lodging is closely related to sugarcane variety types, sugarcane field soil conditions, sugarcane seed planting depth and management measures (high hilling and sugarcane leaf peeling), but wind disasters such as typhoons, monsoon and the like are main causes of large-area sugarcane lodging. According to statistics, in the severe typhoon and monsoon years, the lodging and bending sugarcane accounts for about 30% -40%, and the lodging dip angle is less than 30 degrees and accounts for about 15%; typhoons and monsoon affect the slight year, and lodging and bent sugarcane accounts for 10% -20%.

After the sugarcane is laid down, the sugarcane roots turn over and the root system on one side is broken, so that the absorption of nutrients and moisture is hindered, the growth of sugarcane stems is not facilitated, and the assimilation and accumulation of photosynthetic products of leaves are not facilitated; sugarcane stems are bent, top tips grow upwards, stem nodes are fragile and easy to break, lateral buds and aerial roots of the sugarcane stems germinate and extend, a large amount of stored nutrients of the sugarcane stems are consumed, growth of tip heads and root systems of the sugarcane stems is delayed, hollow stems are caused, and sugarcane yield and sucrose content are reduced (plum blossom, 2010). Further research finds that sugarcane stalks incline, bend and stagger after the sugarcane is laid down, which is not beneficial to mechanized harvesting operation and seriously reduces the mechanized harvesting efficiency; moreover, the sugarcane stalks are inclined, the stubble height (average 6.4cm) is increased, the sugarcane stalk harvesting amount is reduced, and the harvesting loss is increased. The research shows that: when the sugarcane field is lodging, the sugarcane yield is reduced by 5-20%, and the sugar content of the stalks is reduced by about 10%. Meanwhile, after the sugarcane field is lodging and mechanically harvested, the breakage rate of the sugarcane ratoon is increased (more than 20 percent), the rooting rate of the ratoon is reduced, the effective tillering rate of the sugarcane in the next year is reduced, and the density of the effective sugarcane seedlings is reduced. Therefore, lodging is a bottleneck obstacle in the development of the current sugarcane planting industry, and the popularization and application of the mechanical sugarcane harvesting and the development of the sugarcane planting industry are seriously hindered. Therefore, the research on the sugarcane lodging-resistant technology is developed, the technical measures for sugarcane lodging resistance are explored, the sugarcane yield is improved, the mechanized development of sugarcane harvesting is promoted, and the important problem to be solved urgently in the sugarcane planting industry is formed.

In the production of the sugarcane, the conventional lodging-resistant cultivation technology plays a role in preventing lodging to a certain extent. Such as: conventional anti-falling technologies such as lodging-resistant varieties, deep ploughing and deep planting (more than 30cm), high hilling (more than 30cm), sugarcane leaf peeling (4-6 leaves are reserved), and sugarcane binding fork falling prevention of green leaves are selected, so that the sugarcane can be effectively prevented from lodging to a certain extent; however, three technologies of lodging-resistant variety, deep ploughing and deep planting (more than 30cm) and high hilling (more than 30cm) have large investment; the technology of peeling sugarcane leaves (4-6 leaves are reserved) and preventing the sugarcane from falling by bundling green leaves with a fork has the disadvantages of complex operation, low working efficiency and unsuitability for large-area planting.

The application of the plant growth regulator can effectively prevent lodging and improve the yield of the sugarcane. At present, plant growth regulators applied in production are various in types, wherein ethephon, paclobutrazol and the like are mainly used for reducing plant height and preventing lodging, but the side effects brought by the ethephon, the paclobutrazol and the like are that the growth of stalks is limited, and the yield of cane stalks and cane sugar is reduced; triacontanol, brassinolide, etc. can improve photosynthetic performance and prevent premature senility, but cannot effectively prevent lodging. Therefore, the research aims at the contradiction between high density and easy lodging, high density and premature senility and between lodging resistance and sugarcane stem growth limitation of common regulators in sugarcane production, develops the sugarcane root-promoting lodging-resistant yield-increasing regulator from the aspects of promoting root system development, strengthening stalk lodging resistance and strong plant aging resistance, so as to enhance the lodging resistance of high-density sugarcane groups, and has extremely important significance for guaranteeing high quality, high yield and stable yield of sugarcane.

Disclosure of Invention

The invention aims to provide a regulator for promoting the root, strengthening the stalk, resisting lodging and increasing the yield of sugarcane, and a preparation method and application thereof. Based on the above purposes, the invention provides a sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator, which comprises a plant growth regulator, a systemic bactericide, an active agent, a spreader and water.

Wherein the plant regulator comprises ethephon and sodium naphthaleneacetate; systemic bactericides include hymexazol; the active agent and the spreader are selected from one or more of Tween 20, Tween 60 or Triton, and can promote the infiltration of the liquid medicine on the surface of the plant leaves, promote the absorption of the liquid medicine and effectively improve the action effect of the liquid medicine.

The weight ratio of sodium naphthalene acetate to hymexazol to ethephon is 1: (2.5-5.3): (5.5-10), specifically, the sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator comprises the following components: 15-20g/L of sodium naphthalene acetate, 50-80g/L of hymexazol, 150g/L of ethephon 110-.

Wherein the chemical name of the Sodium naphthylacetate is alpha-Sodium naphthylacetate (English chemical name: Sodium naphthalene-1-acetate, abbreviation: NAA-Na), and the molecular formula is as follows: C12H9O2Na, molecular weight: 208.19. the pure product is white particles, powder or crystalline powder; no or slight odor, slightly sweet taste and salty taste; melting point: 120 ℃, boiling point: 373.2 deg.C; is stable in air and in solution with pH of 7-10. Readily soluble in water (53.0g/100ml, 25 ℃ C.; pH 8) and slightly soluble in ethanol (1.4g/100 ml). Low toxicity and high efficiency, LD 50: rats are orally taken 1000mg/kg at acute stage, mice are about 700mg/kg (sodium salt), and the bee-killing agent is nontoxic to bees. CAS accession number: 61-31-4, EINECS accession number: 200-504-2. Sodium naphthaleneacetate enters a plant body through leaves, tender plant epidermis and seeds, then is decomposed into naphthaleneacetate ions, and is guided to a part with vigorous growth (a growing point, tender organs, flowers or fruits) along with nutrient flow. The sodium naphthaleneacetate has the action characteristics and physiological functions of endogenous auxin indoleacetic acid, and firstly, the tip development of a root system is promoted, and the formation of adventitious roots and roots is induced; secondly, inducing the rapid expansion of cells, inducing germination, and promoting the expansion of fruits and tubers; thirdly, inducing flowering, preventing flower and fruit dropping and forming seedless fruits; fourthly, the drought resistance, cold resistance, disease resistance, salt and alkali resistance and dry hot wind resistance of crops are enhanced, and the stress resistance of the crops is improved; fifthly, the early ripening of crops is promoted, the yield is increased, and the quality is improved.

Hymexazol, chemical name 3-hydroxy-5-methylisoxazole (english name: hydroxyxazol, or hydroxy-isoxazcle, or Tachigaren), molecular formula: C4H5NO2, molecular weight: 99. the pure product is colorless crystal; melting point is 86-87 ℃; flash point 205 ± 2 ℃; vapor pressure at 25 ℃ of 133.3X 10-3 Pa; easily dissolved in water (85g/L, 25 ℃) and organic solvents such as acetone, methanol, ethanol and the like; stable in acid and alkali solution and has no corrosion. Hymexazol is a systemic bactericide and soil disinfectant. The hymexazol is absorbed by the soil after entering the soil and is combined with metal ions such as iron, aluminum and the like in the soil, so that the germination of pathogenic bacteria spores and the normal growth of pathogenic fungi mycelia are effectively inhibited or pathogenic bacteria are directly killed (the pesticide effect period is 2 weeks); meanwhile, hymexazol can promote the growth of the branches of the root system of crops. After the hymexazol is absorbed by the root system, the hymexazol quickly moves to the stem along the xylem catheter (the hymexazol is spread over the whole plant for 24 hours), and is metabolized in the plant to generate two glucosides, namely O-glucoside and N-glucoside, wherein the O-glucoside has the sterilization function as the hymexazol; the N-glucoside has the function of improving physiological activity, can induce the root of crops to branch, increase the number of lateral roots, improve the activity of root systems, improve the capacity of the root systems for absorbing water and nutrients, promote the growth of the crops, prevent the aging of the root systems, improve the stress resistance of the seedling of the crops, and resist cold and drought. Hymexazol has little influence on bacteria and actinomycetes except pathogenic bacteria in soil, does not destroy ecological balance of beneficial microorganisms in soil, can be decomposed into oxazolone and acetoacetamide in soil, and finally is decomposed into CO2 and H2O; the hymexazol is low in toxicity, the acute oral LD50 of a rat is 4678mg/kg, the percutaneous LD50 is 10000mg/kg, and the percutaneous LD50 of a mouse is 2000mg/kg, so that the hymexazol is low in toxicity to fish and birds and is non-toxic to bees; therefore, hymexazol is safe to the environment.

Ethephon is 2-chloroethylphosphonic acid (English name: Ethephon, abbreviation: Eth), molecular formula C7H8ClN, molecular weight 149.7; the pure product is white needle crystal, the melting point is 74-75 ℃, the boiling point is about 265 ℃ (decomposition), the density is 1.409 +/-0.02 g/cm3(20 ℃, original drug). Is easy to dissolve in water and difficult to dissolve in acetone and ethyl acetate; the solubility in water is about lkg/L (23 ℃), the aqueous solution is stable when the pH is less than 3.5, and ethylene is released by hydrolysis when the pH is increased. Sensitive to ultraviolet light and stable at normal pressure and temperature below 75 deg.c. Ethephon releases ethylene in plants, and has the main functions of: enhancing the RNA synthesis ability in plant cells and promoting the protein synthesis. Promoting synthesis of cellulase in the abscission zone of plant such as leaf stalk, fruit stalk and petal base, accelerating abscission layer formation, and causing organ abscission; ethephon can enhance the activity of phosphatase (when fruits are ripe) and promote the fruit ripening; in senescent or susceptible plants, ethephon increases peroxidase activity, delays senescence or increases disease resistance; ethylene can inhibit the synthesis of endogenous auxin, so that ethephon has the effect of delaying the growth of plants; ethephon releases ethylene, and induces plant organs (leaves and stems) to generate triple reactions, namely, longitudinal growth is inhibited, radial growth is promoted, and upward growth is induced; and (3) inducing the female flowers of the cucumbers to differentiate by ethylene. On the sugarcane, ethephon inhibits cell elongation, dwarfs plant height, promotes the growth of sugarcane node roots and resists lodging.

The second aspect of the invention provides a method for preparing a sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator, which comprises the following steps: respectively dissolving sodium naphthalene acetate, hymexazol and ethephon in water, mixing the three solutions, adding an active agent and a spreader, and diluting to constant volume with water to obtain the product.

The third aspect of the invention further provides application of the sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator in sugarcane planting, wherein the sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator is diluted into 500-700 times of liquid by adding water for seed soaking treatment or leaf surface spraying when being applied.

The method comprises the following specific steps: before sowing, immersing sugarcane seeds in the diluted sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator for 10-15 minutes; and in the jointing stage of the sugarcane, namely when 5-8 unfolded leaves or 7-11 visible leaves exist in the sugarcane, the diluted sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator is used for spraying on the leaf surface.

The invention has the following beneficial effects:

the sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator provided by the invention mainly contains sodium naphthalene acetate, hymexazol and ethephon, and the three substances act together, so that the product has multiple functions of enhancing the stress resistance and lodging resistance of sugarcane and improving the yield and the sugar yield, and the three substances have obvious synergistic interaction effects.

Therefore, the regulating agent can obviously enhance the rooting capacity of the seed stems of the sugarcane, induce the development of lateral roots, improve the number of root systems, increase the length of the root systems, promote the sugarcane to construct a huge root system and improve the root lodging resistance of the sugarcane; the capacity of the sugarcane for resisting low-temperature cold damage and drought stress is improved, the stem development is promoted, the dry matter accumulation is increased, the stem lodging resistance of the sugarcane is obviously improved, and the yield of the sugarcane is improved by over 10 percent. Meanwhile, the product has the characteristics of low cost, convenient use, little field residue and the like, is easy to popularize and apply, and has a positive promoting effect on promoting the high and stable yield of the sugarcane in China.

Detailed Description

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Preliminary experiments 1 Effect of Naphthaline sodium acetate, hymexazol, ethephon on sugarcane yield and component factors

Selecting sodium naphthalene acetate, hymexazol and ethephon, respectively setting three concentration gradients of 0, 1 and 2 (the concentration gradients are shown in table 1), carrying out permutation and combination, carrying out 27 treatments in total, taking the cinnamic sugar 42 as a test variety, carrying out a field experiment at Tandoda county Dingdang experiment station of sugarcane research institute of autonomous region of Guangxi nationality, soaking the seeds before the seeding of the sugarcane (soaking the seeds for 10-15 minutes), and spraying the foliar in a jointing stage (5-8 leaf expanding stage), wherein the treatment is repeated for three times. The seeding amount of the sugarcane (double-bud seedlings) is 3000 per mu. Harvesting in the mature period, measuring yield and yield constituting factors, and measuring sugar content and sugar yield.

TABLE 1 concentration gradients for sodium naphthaleneacetate, hymexazol, and ethephon

TABLE 2 Effect of sodium Naphthalenate (N), hymexazol (H) and ethephon (E) on sugarcane yield and yield contributors

Note: the effective stem number and the stem forming rate per mu are actual survey values of the cells, the yield per mu is the actual harvest yield of the cells, and the single stem weight is the average value data of 20 sugarcane stems per cell; the sugar content is 1.0825-7.703, wherein 1.0825 is a linear regression coefficient of sucrose and brix, and 7.703 is an empirical coefficient; and taking 6 sugarcane plants at the process maturity stage, taking sugarcane juice from the base part, the middle part and the upper part of the sugarcane, and applying an average value of measurement values of an ATAGO handheld saccharimeter.

As shown in Table 2, the experimental results show that the three components are jointly applied according to different concentration ratios, and 26 combinations can obviously improve the yield per mu and the sugar yield per mu, wherein the yield per mu of the sugarcane is increased by 4.40-52.54%, and the sugar yield per mu is increased by 4.07-59.22%; the stem forming rate and the effective stem number are respectively increased by 1.48 to 29.22 percent and 1.06 to 28.68 percent, and the single stem weight is increased by 3.16 to 8.73 percent; the sugar content is increased by 0.34-52.54%. When the three components are applied independently, the yield per mu of sugarcane, the number of available stems per mu, the weight of a single stem, the content of sucrose and the sugar yield per mu are increased to different degrees compared with a control, but the increase range is lower than that when the three components (or two of the three components) are used together, and the common effect of the three components is higher than that of the two components, so that the three components have remarkable synergistic effect when applied together. Preliminary experiment 2 influence of sodium naphthalene acetate, hymexazol and ethephon on rhizome morphology and stalk thrust

Selecting sodium naphthalene acetate, hymexazol and ethephon, respectively setting three concentration gradients of 0, 1 and 2 (the concentration gradients are shown in table 3), carrying out permutation and combination, carrying out 27 treatments in total, taking the cinnamic sugar 42 as a test variety, carrying out a field experiment at Tandoda county Dingdang experiment station of sugarcane research institute of autonomous region of Guangxi nationality, soaking the seeds before the seeding of the sugarcane (soaking the seeds for 10-15 minutes), and spraying the foliar in a jointing stage (5-8 leaf expanding stage), wherein the treatment is repeated for three times. The seeding amount of the sugarcane (double-bud seedlings) is 3000 per mu. Harvesting in the mature period, and measuring the pushing force of the sugarcane stalks (the pushing force of the gravity center points of the stalks) and the morphological indexes of the rootstocks.

Table 3: influence of sodium naphthalene acetate (N), hymexazol (H) and ethephon (E) on sugarcane root and stem morphology indexes

Note: the sugarcane stem height, the sugarcane stem diameter and the total root length are the average values of 20 continuous plants, and the stem pushing force is the measured value of the actual pushing force of the gravity center point of the 20 continuous plants.

As shown in table 3, the experimental results show that the three components are applied together according to different concentration ratios, and the sugarcane stem height, the sugarcane stem diameter, the total root length and the sugarcane stem pushing force can be significantly improved by 26 combinations, wherein the sugarcane stem pushing force (the center of gravity of the stems) is increased by 1.24% -55.67%, the sugarcane stem height is increased by 1.34% -11.41%, and the sugarcane stem diameter and the total root length are respectively increased by 0.38% -5.77% and 4.70% -60.03%. When the three components are applied independently, the sugarcane stem height, the sugarcane stem diameter, the total root length and the sugarcane stem pushing force are increased to different degrees compared with a control, but the increase range is lower than that when the three components (or two of the three components) are used together, and the common effect of the three components is higher than that of the two components, so that the three components have remarkable synergistic effect when applied together.

Example 1

Dissolving 1.5g of sodium naphthalene acetate in 5ml of water to obtain a solution I after complete dissolution; dissolving 8g of hymexazol in 10ml of water, and obtaining a solution II after complete dissolution; then 13g of ethephon is added into 20ml of water, and solution III is obtained after complete dissolution; and mixing the solution I, the solution II and the solution III, adding 1ml of Tween 20, shaking up, and finally adding water to a constant volume of 100ml to obtain the sugarcane lodging-resistant and anti-aging high-light-efficiency lodging-resistant yield-increasing regulator.

Example 2

2g of sodium naphthalene acetate is dissolved in 5ml of water, and a solution I is obtained after the sodium naphthalene acetate is completely dissolved; dissolving 5g of hymexazol in 10ml of water, and obtaining a solution II after complete dissolution; then 13g of ethephon is added into 20ml of water, and solution III is obtained after complete dissolution; and mixing the solution I, the solution II and the solution III, adding 1ml of Tween 20, shaking up, and finally adding water to a constant volume of 100ml to obtain the sugarcane lodging-resistant and anti-aging high-light-efficiency lodging-resistant yield-increasing regulator.

Example 3

2g of sodium naphthalene acetate is dissolved in 5ml of water, and a solution I is obtained after the sodium naphthalene acetate is completely dissolved; dissolving 8g of hymexazol in 10ml of water, and obtaining a solution II after complete dissolution; then 11g of ethephon is added into 6ml of water, and solution III is obtained after complete dissolution; and mixing the solution I, the solution II and the solution III, adding 1ml of Tween 20, shaking up, and finally adding water to a constant volume of 100ml to obtain the sugarcane lodging-resistant and anti-aging high-light-efficiency lodging-resistant yield-increasing regulator.

Example 4

2g of sodium naphthalene acetate is dissolved in 5ml of water, and a solution I is obtained after the sodium naphthalene acetate is completely dissolved; dissolving 8g of hymexazol in 10ml of water, and obtaining a solution II after complete dissolution; then 13g of ethephon is added into 6ml of water, and solution III is obtained after complete dissolution; and mixing the solution I, the solution II and the solution III, adding 1ml of Tween 20, shaking up, and finally adding water to a constant volume of 100ml to obtain the sugarcane lodging-resistant and anti-aging high-light-efficiency lodging-resistant yield-increasing regulator.

Example 5

2g of sodium naphthalene acetate is dissolved in 5ml of water, and a solution I is obtained after the sodium naphthalene acetate is completely dissolved; dissolving 8g of hymexazol in 10ml of water, and obtaining a solution II after complete dissolution; then 15g of ethephon is added into 6ml of water, and solution III is obtained after complete dissolution; and mixing the solution I, the solution II and the solution III, adding 1ml of Tween 20, shaking up, and finally adding water to a constant volume of 100ml to obtain the sugarcane lodging-resistant and anti-aging high-light-efficiency lodging-resistant yield-increasing regulator.

Example 6

A field experiment is carried out by taking the osmanthus sugar 42 as a test variety, taking the regulators of examples 1, 2, 3, 4, 5 and 6 to be diluted into 500 times of liquid by adding water, taking the regulators of examples 7, 8, 9, 10, 11 and 12 to be diluted into 1000 times of liquid by adding water, spraying the liquid on the leaf surfaces of a seed soaking period (15 minutes for seed soaking) and a jointing period (5-8 leaf expanding period) before sugarcane sowing, and repeating the steps every three times, and setting clear water contrast. The seeding amount of the sugarcane (double-bud seedlings) is 3000 per mu. And in the harvest period, measuring the yield per mu and the sugar content per mu of the sugarcane, and counting the lodging rate.

Table 4: influence of sugarcane root promoting, stalk strengthening, lodging resistance and yield increasing regulator on sugarcane yield, sugar yield and lodging rate

Note: the data in the table are the average of 6 measurements.

The experimental results (as shown in table 4) show that the co-application of the three components can significantly improve the yield per mu and the sugar content per mu of the sugarcane and reduce the lodging rate. Wherein, the yield per mu and the sugar content per mu are improved by 16.21 to 22.70 percent and 16.87 to 23.39 percent, and the lodging rate is reduced by 17.30 to 35.58 percent. Shows that: the sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator effectively improves the lodging-resistant capability of the sugarcane and improves the yield and the sugar yield of the sugarcane.

Example 7 Effect of the sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator of the invention on sugarcane lodging resistance and yield-increasing effect

In 2018 and 2019, respectively carrying out multipoint experiment demonstration at Dingdang experimental station in Longan county of sugarcane research institute of Guangxi Zhuang nationality and Xinxiang experimental station of crop science research institute of Chinese agricultural academy, taking the sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator of example 1 to dilute 1000 times, and soaking seeds for 10-15 minutes before sowing; spraying on the leaf surface in the jointing stage (5-8 leaf spreading) of the sugarcane, and not spraying in the contrast. The experimental results are shown in Table 5, the lodging rate of all the tested sugarcanes is reduced by 17.40-37.50 percent by applying the sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator, the average yield per mu is improved by 11.67-51.20 percent, and the average sugar per mu is improved by 14.62-55.19 percent.

TABLE 5 influence of sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator on sugarcane yield-increasing effect

Note: the lodging rate is the actual investigation value of the harvest period, and the yield per mu is the actual harvest yield.

Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A regulator for promoting the growth of sugarcane root, strengthening stalk, resisting lodging and increasing yield is characterized by comprising a plant growth regulator, a systemic bactericide, an active agent, a spreader and water.

2. The sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator of claim 1, wherein the plant growth regulator comprises ethephon, sodium naphthaleneacetate; the systemic bactericide comprises hymexazol.

3. The sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing modulator of claim 2, wherein the active agent and the spreader are selected from one or more of tween 20 or tween 60 or triton.

4. The sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator as claimed in claim 3, wherein the weight ratio of sodium naphthalene acetate, hymexazol and ethephon is 1: (2.5-5.3): (5.5-10).

5. The sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator as claimed in claim 4, which comprises the following components: 15-20g/L of sodium naphthalene acetate, 50-80g/L of hymexazol, 150g/L of ethephon 110-.

6. The method for preparing the sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator as claimed in any one of claims 1-5, is characterized by comprising the following steps: respectively dissolving sodium naphthalene acetate, hymexazol and ethephon in water, mixing the three solutions, adding an active agent and a spreader, and diluting to constant volume with water to obtain the product.

7. Use of a sugarcane root-promoting, stalk-strengthening, lodging-resistant and yield-increasing regulator as defined in any one of claims 1 to 5 in sugarcane planting.

8. The application of claim 7, wherein the sugarcane root and stalk promoting, lodging resistant and yield increasing regulator is diluted into 700 times of 500-fold liquid for seed soaking treatment and/or foliage spraying.

9. The use of claim 8, wherein the time for seed soaking is before sowing and the time for foliar spray is at the stage of sugarcane jointing.

10. The use of claim 9, wherein the seed soaking is submerging the sugarcane seeds for 10-15 minutes; the sugarcane jointing stage is a stage in which 5-8 unfolded leaves or 7-11 visible leaves exist.