CN114804958A - Novel rice seedbed seedling strengthening agent - Google Patents
Novel rice seedbed seedling strengthening agent Download PDFInfo
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- CN114804958A CN114804958A CN202210581082.8A CN202210581082A CN114804958A CN 114804958 A CN114804958 A CN 114804958A CN 202210581082 A CN202210581082 A CN 202210581082A CN 114804958 A CN114804958 A CN 114804958A
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/60—Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
Abstract
The invention discloses a novel rice seedbed seedling strengthening agent, which comprises the following raw materials in parts by weight: 10-14 parts of urea, 17-19 parts of ammonium dihydrogen phosphate, 9-11 parts of potassium sulfate, 0.1-0.3 part of vitamin complex, 0.8-1.2 parts of corn steep liquor dry powder, 8-12 parts of compound amino acid powder, 0.1-0.3 part of ATP, 8-12 parts of trehalose, 0.3-0.5 part of chitosan oligosaccharide, 0.5-0.7 part of metalaxyl, 95-105 parts of charcoal, 1-2 parts of trichoderma harzianum, 0.4-0.6 part of silicon fertilizer and 0.1-0.3 part of indoleacetic acid. In the experiment of the invention, the fact that all treatments with the seedling strengthening agent have the effect of promoting the growth and development of the rice in the seedbed stage compared with the blank control without any seedling strengthening agent is found, and the autonomously developed rice seedling strengthening agent B has more obvious synergistic effect compared with the control with the conventional fertilizer.
Description
Technical Field
The invention relates to the technical field of rice, in particular to a novel rice seedbed seedling strengthening agent.
Background
As one of the important grain crops in China, rice plays an extremely important strategic position in guaranteeing the grain safety in China. In a common saying, "good seedling eight-ingredient grain" shows that the rice seedbed period is a key period for stable yield and high yield of rice. For example, the application of the seedling bed strengthening agent becomes the choice of most farmers for the convenience of seedling bed management because the heavy loss and the influence on yield are caused by improper medication and fertilizer application in the seedling bed period. The rice seedling strengthening agent is called as a rice seedling strengthening nutrient and is a multifunctional solid powdery acidic compound fertilizer. It contains not only complete fertilizer, but also germicide, chlormequat chloride, rooting agent, etc. The acid regulating, disinfecting, nourishing and chemical controlling can be integrated by one-time application, the management is simplified, and the labor and the cost can be saved. The cultivation of strong seedlings is one of the keys of stable yield and high yield of rice, and besides improving the cultivation environment and improving the cultivation technology, the use of a seedling strengthening agent becomes the most direct and effective method for cultivating strong seedlings. If the euphorbia root is correctly used in the rice seedbed period, all nutrients required by the rice before transplanting can be met, farmers can be better guided to cultivate strong seedlings, the rice planting process is simplified, and the planting effect is highlighted.
Based on the above, the invention provides a novel rice seedbed seedling strengthening agent.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a novel rice seedbed seedling strengthening agent to solve the problems in the background technology.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides a novel rice seedbed seedling strengthening agent, which comprises the following raw materials in parts by weight:
10-14 parts of urea, 17-19 parts of ammonium dihydrogen phosphate, 9-11 parts of potassium sulfate, 0.1-0.3 part of vitamin complex, 0.8-1.2 parts of corn steep liquor dry powder, 8-12 parts of compound amino acid powder, 0.1-0.3 part of ATP, 8-12 parts of trehalose, 0.3-0.5 part of chitosan oligosaccharide, 0.5-0.7 part of metalaxyl, 95-105 parts of charcoal, 1-2 parts of trichoderma harzianum, 0.4-0.6 part of silicon fertilizer and 0.1-0.3 part of indoleacetic acid.
Preferably, the vitamin complex is one or more of vitamin A, vitamin B1, vitamin C, vitamin E and vitamin K.
Preferably, the composite amino acid powder is one or more of glycine, alanine, leucine, isoleucine and valine.
Preferably, the seedling-strengthening agent is also added with modified bentonite composite carbon nano tubes, and the addition amount is 5-10% of the total amount of urea.
Preferably, the preparation method of the modified bentonite composite carbon nanotube comprises the following steps:
s1: 5-10 parts of bentonite is sent into 10-20 parts of coupling agent solution, then 1-5 parts of hydrochloric acid and 3-6 parts of sodium alginate are added, stirring is carried out for 15-25min at the rotating speed of 300-350r/min, and the bentonite modification solution is obtained after the stirring is finished;
s2: adding the carbon nano tube into 5-10 parts of rare earth liquid, stirring and modifying, wherein the stirring temperature is 65-75 ℃, the stirring speed is 350-370r/min, the stirring time is 10-20min, and after stirring, washing and drying are carried out to obtain a modified carbon nano tube;
s3: adding 2-3 times of bentonite modification liquid into the modified carbon nano tube, stirring and mixing fully, then washing and drying to obtain the modified bentonite composite carbon nano tube.
Preferably, the coupling agent solution is formed by mixing a coupling agent and ethanol according to the weight ratio of 1: 5.
Preferably, the rare earth liquid is rare earth lanthanum chloride with the mass fraction of 5-10%.
Preferably, the rare earth liquid is rare earth lanthanum chloride with the mass fraction of 7.5%.
Preferably, the rotation speed of the S3 for stirring and mixing fully is 1000-1500r/min, and the stirring time is 5-10 min.
The modified bentonite composite carbon nano tube is an auxiliary agent of the product, the bentonite has a lamellar structure, the carbon nano tube has a tubular structure, and the modified bentonite composite carbon nano tube and the carbon nano tube are subjected to composite modification to enhance the dispersibility of the product, so that the modified bentonite composite carbon nano tube is applied to the product and can further improve the application effect of the product.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, different independently developed seedling-strengthening agents are applied to the rice seedbed, and the influence of different seedling-strengthening agents on the rice seedbed and the early stage of transplanting is researched. In the experiment, all treatments with the seedling strengthening agent have the effect of promoting the growth and development of the rice at the seedbed stage compared with the blank control without any seedling strengthening agent, and the autonomously developed rice seedling strengthening agent B has more obvious synergistic effect compared with the control with the conventional fertilizer. The seedling strengthening agent B has more remarkable synergism on increasing the dry matter content, can obviously improve the plant height and the dry weight of the transplanting day, has the same synergism on increasing the activity of the resistant enzyme, can obviously improve the CAT and APX content compared with the conventional fertilizer, can also obviously improve the soluble protein content compared with the conventional fertilizer, can provide an environment beneficial to the growth of rice, and is the seedling strengthening agent with the most remarkable synergism on the whole.
Drawings
FIG. 1 is a graph showing the effect of different seedling-strengthening agents of the present invention on the dry weight of the aerial parts on the day of transplantation;
FIG. 2 is a graph showing the effect of different seedling-strengthening agents of the present invention on the dry weight of the underground part on the day of transplantation;
FIG. 3 is a graph showing the effect of different seedling-strengthening agents of the present invention on the APX activity on the day of rice transplantation;
FIG. 4 is a graph showing the effect of different seedling-strengthening agents of the present invention on the APX activity at the fourth day after transplantation of rice;
FIG. 5 is a graph showing the effect of different seedling-strengthening agents of the present invention on APX activity at the eighth day after transplantation of rice;
FIG. 6 is a graph showing the effect of different seedling-strengthening agents of the present invention on CAT activity on the day of rice transplantation;
FIG. 7 is a graph showing the effect of different seedling-strengthening agents of the present invention on CAT activity at the fourth day after transplantation of rice;
FIG. 8 is a graph showing the effect of different seedling-strengthening agents of the present invention on CAT activity at the eighth day after transplantation of rice;
FIG. 9 is a graph showing the effect of different seedling-strengthening agents of the present invention on SOD activity on the day of rice transplantation;
FIG. 10 is a graph showing the effect of different seedling-strengthening agents of the present invention on the SOD activity of the fourth day after transplanting rice;
FIG. 11 is a graph showing the effect of different seedling-strengthening agents of the present invention on SOD activity of rice at the eighth day after transplantation
FIG. 12 is a graph showing the effect of different seedling-strengthening agents of the present invention on the soluble sugar content of rice on the day of transplantation;
FIG. 13 is a graph showing the effect of different seedling-strengthening agents of the present invention on the soluble sugar content of rice at the fourth day after transplantation;
FIG. 14 is a graph showing the effect of different seedling-strengthening agents of the present invention on the soluble sugar content of rice at the eighth day after transplantation;
FIG. 15 is a graph showing the effect of different seedling-strengthening agents of the present invention on the soluble protein content of rice on the day of transplantation;
FIG. 16 is a graph showing the effect of different seedling-strengthening agents of the present invention on the soluble protein content of rice at the fourth day after transplantation;
FIG. 17 is a graph showing the effect of different seedling-strengthening agents of the present invention on the soluble protein content of rice at the eighth day after transplantation;
FIG. 18 is a photograph of the seedling-strengthening agent D12CK showing the height and root length of rice;
FIG. 19 is a photograph of the seedling-strengthening agent D12B showing the height and root length of rice;
FIG. 20 is a photograph of the seedling-strengthening agent D15CK showing the height and root length of rice;
FIG. 21 is a photograph of the seedling-strengthening agent D15B showing the height and root length of rice;
FIG. 22 is a photograph of the seedling-strengthening agent D18CK showing the height and root length of rice;
FIG. 23 is a photograph of the seedling-strengthening agent D18B showing the height and root length of rice;
FIG. 24 is a photograph of the seedling-strengthening agent D21CK showing the height and root length of rice;
FIG. 25 is a photograph showing the plant height and root length of rice with the seedling-strengthening agent D21B of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The novel rice seedbed seedling strengthening agent comprises the following raw materials in parts by weight:
10-14 parts of urea, 17-19 parts of ammonium dihydrogen phosphate, 9-11 parts of potassium sulfate, 0.1-0.3 part of vitamin complex, 0.8-1.2 parts of corn steep liquor dry powder, 8-12 parts of compound amino acid powder, 0.1-0.3 part of ATP, 8-12 parts of trehalose, 0.3-0.5 part of chitosan oligosaccharide, 0.5-0.7 part of metalaxyl, 95-105 parts of charcoal, 1-2 parts of trichoderma harzianum, 0.4-0.6 part of silicon fertilizer and 0.1-0.3 part of indoleacetic acid.
The vitamin complex of the embodiment is one or more of vitamin A, vitamin B1, vitamin C, vitamin E and vitamin K.
The composite amino acid powder of the embodiment is one or a combination of glycine, alanine, leucine, isoleucine and valine.
The seedling-strengthening agent of the embodiment is also added with modified bentonite composite carbon nano tubes, and the addition amount is 5-10% of the total amount of urea.
The preparation method of the modified bentonite composite carbon nanotube of the embodiment comprises the following steps:
s1: 5-10 parts of bentonite is sent into 10-20 parts of coupling agent solution, then 1-5 parts of hydrochloric acid and 3-6 parts of sodium alginate are added, stirring is carried out for 15-25min at the rotating speed of 300-350r/min, and the bentonite modification solution is obtained after the stirring is finished;
s2: adding the carbon nano tube into 5-10 parts of rare earth liquid, stirring and modifying, wherein the stirring temperature is 65-75 ℃, the stirring speed is 350-370r/min, the stirring time is 10-20min, and after stirring, washing and drying are carried out to obtain a modified carbon nano tube;
s3: adding 2-3 times of bentonite modification liquid into the modified carbon nano tube, stirring and mixing fully, washing with water, and drying to obtain the modified bentonite composite carbon nano tube.
The coupling agent solution of the embodiment is formed by mixing a coupling agent and ethanol according to the weight ratio of 1: 5.
The rare earth liquid in the embodiment is rare earth lanthanum chloride with the mass fraction of 5-10%.
The rare earth liquid in the embodiment is rare earth lanthanum chloride with the mass fraction of 7.5%.
In the embodiment, the rotation speed of the S3 for sufficient stirring and mixing is 1000-1500r/min, and the stirring time is 5-10 min.
The experiment is carried out in a growth room of the college of agriculture of eight agricultural reclamation university in Heilongjiang in 2021 month, the indoor treatment is carried out at the constant temperature of 25 +/-1 ℃, the Rh is 70% +/-5%, and the photoperiod is 12 h. 5 seedbed seedling-strengthening agents were autonomously prepared in order to use no seedling-strengthening agent (KB) and a conventional seedling-strengthening agent (CK) commercially available as a control. The ingredient table is as follows:
the area of the seedling raising tray is 32cm x 22cm, the corresponding fertilizer is weighed and mixed with 200g of screened abandoned soil for years, the mixture is laid at the bottom of the seedling raising tray, a rice seedling raising matrix tray is placed on the top of the seedling raising tray, and water is poured through the seedling raising tray. Selecting plump seeds, sterilizing with 0.5% sodium hypochlorite solution for 20min, cleaning with distilled water, soaking the seeds in clear water in a dark incubator at constant temperature (27 deg.C) for 36h, and sowing when white appears. Taking samples every three days from the emergence of seedlings, taking pictures to record the plant height and the root length, taking coins every time for each treatment, measuring the dry weight, the physiological index and the root data when the seedlings grow to three leaves and one heart, and transplanting. Sampling was performed on days 4 and 8 after transplantation to determine physiological indices, and the test was repeated three times. Lihe Hesheng (Lihe Hesheng, 2000) was used as a method for measuring physiological indexes such as SOD, CAT, POD, and APX.
Influence of different seedling-strengthening agents on plant height and root length
The influence of different seedling-strengthening agents on the plant height and the root length of the rice at the bed stage is shown in the figure, and as can be seen from table 1, the plant height of the seedling-strengthening agent B after planting is obviously improved by 40.19% compared with the conventional seedling-strengthening agent Control (CK) compared with the seedling-strengthening agent control. Compared with a blank (KB), all the seedling-strengthening agents remarkably improve the plant height at day 21. The influence of the seedling-strengthening agent on the plant height of the rice in the seedling stage is obvious in the later stage of the seedling stage. As can be seen from table 2, the seedling strengthening agent B significantly increased the root length after planting by 21 days, compared to the conventional seedling strengthening agent control, by 62.40% compared to the blank, and by 109.5% compared to the blank. The effect of the common seedling strengthening agent on the root length of the rice in the seedling stage is small, but the seedling strengthening agent B has a great promoting effect on the plant height and the root length.
TABLE 1 Effect of different seedling-strengthening agents on the height of rice plants
TABLE 2 Effect of different seedling-strengthening agents on the root growth of Rice
Influence of seedling strengthening agent on dry weight of transplanting day
The influence of different seedling strengthening agents on the dry weight of rice on the transplanting day is shown in the figure, and as can be seen from figures 1 and 2, the seedling strengthening agent B, C, D, F can remarkably increase the dry weight of the overground part of the rice on the transplanting day by 77.06%, 31.09%, 38.67% and 43.22% respectively compared with CK, wherein the seedling strengthening agent B has the most remarkable synergism, which indicates that the seedling strengthening agent B, C, D, F can improve the difference of the dry matter content of the overground part of the rice plant and the CK, and the seedling strengthening agent B has the most remarkable synergism. But all seedling-strengthening agents have no significant influence on the dry weight of underground parts.
Effect of different seedling-strengthening Agents on Rice resistance enzyme Activity
The effect of different rice seedling strengthening agent treatments on the activity of the ascorbic Acid Peroxidase (APX) of rice is shown in figures 3, 4 and 5, and it can be seen from the figures that the activities of the ascorbic acid peroxidase on the same day of rice transplantation and the fourth day after transplantation are not obviously changed, but the activities of the ascorbic acid peroxidase of the seedling strengthening agents B and C on the eighth day after transplantation are obviously improved, and compared with CK, the difference is obviously increased by 91.3 percent and 149.1 percent respectively. It is proved that the seedling strengthening agent B, C has the function of improving the activity of the ascorbic acid peroxidase after the rice is transplanted.
The effect of different rice seedling-strengthening agents on rice Catalase (CAT) is shown in figures 6, 7 and 8, and it can be seen from the figures that the catalase activity of the rice treated by different rice seedling-strengthening agents on the same day of transplantation is not obviously different, the catalase activity of most of the rice treated by the seedling-strengthening agents on the fourth day after transplantation is higher than that of the control but not obviously different, the catalase activity of the seedling-strengthening agent B on the eighth day after transplantation is obviously improved, and the difference is obviously increased by 35.8% compared with CK. Therefore, the seedling strengthening agent B has the function of improving the catalase activity after the rice is transplanted.
The influence of different rice seedling strengthening agent treatments on rice superoxide dismutase (SOD) is shown in figures 9, 10 and 11, and it can be seen from the figures that the rice superoxide dismutase treated by the seedling strengthening agents C and D on the transplanting day has a significant difference higher than that of CK and CK, and the difference is respectively increased by 42.24% and 50.67%; the rice superoxide dismutase treated by the seedling strengthening agent C and the seedling strengthening agent D on the fourth day after transplanting is obviously higher than that of CK and is obviously increased by 56.47 percent and 145.91 percent respectively compared with CK; the rice superoxide dismutase treated by the seedling strengthening agent D and the rice superoxide dismutase treated by the seedling strengthening agent F are obviously higher than the difference between CK and CK by 32.30 percent and 16.43 percent respectively on the eighth day after transplanting, which shows that the seedling strengthening agent has obvious influence on the rice superoxide dismutase after transplanting.
Influence of different seedling strengthening agents on soluble sugar content of rice
The influence of different rice seedling strengthening agent treatments on the content of soluble sugar in rice is shown in figures 12, 13 and 14, the content of soluble sugar in plants under the adverse conditions can be increased, and as shown in figure 12, compared with a control, the content of soluble sugar in rice treated by all the seedling strengthening agents on the transplanting day is lower than that of the control, and the difference is obvious, so that the growth environment provided by the self-made rice seedbed seedling strengthening agent is more suitable for the growth of rice seedlings than that of the control. As can be seen from fig. 12 and 13, the difference in soluble sugar content was gradually reduced after transplantation due to the same environment of transplantation, and the difference in soluble sugar content was not significant between the treatments on the eighth day after transplantation as compared with the control.
Influence of different seedling strengthening agents on the content of soluble protein in rice
The effect of different rice seedling strengthening agent treatments on the content of soluble protein of rice is shown in fig. 15, 16 and 17, and it can be seen from fig. 17 that the content of soluble protein of the seedling strengthening agent B in the eighth day after rice transplantation can be significantly increased compared with the conventional seedling strengthening agent control, the difference is significant compared with the control, the content of soluble protein is increased by 61.06% compared with the control, which indicates that the effect of the seedling strengthening agent B on the soluble protein of the transplanted rice is significant, and the content of the soluble protein after transplantation can be significantly increased compared with the control.
Optimization example 1
The preparation method of the modified bentonite composite carbon nanotube of the embodiment comprises the following steps:
s1: sending 5 parts of bentonite into 10 parts of coupling agent solution, then adding 1 part of hydrochloric acid and 3 parts of sodium alginate, stirring at the rotating speed of 300r/min for 15min, and obtaining bentonite modification solution after stirring;
s2: adding the carbon nano tube into 5 parts of rare earth liquid, stirring and modifying, wherein the stirring temperature is 65 ℃, the stirring speed is 350r/min, the stirring time is 10min, and after stirring, washing and drying are carried out to obtain a modified carbon nano tube;
s3: and adding 2 times of bentonite modification solution into the modified carbon nano tube, stirring and mixing fully, washing with water, and drying to obtain the modified bentonite composite carbon nano tube.
The coupling agent solution of the embodiment is formed by mixing a coupling agent and ethanol according to the weight ratio of 1: 5.
The rare earth liquid in the embodiment is rare earth lanthanum chloride with the mass fraction of 5%.
In the present embodiment, the rotation speed of the S3 stirring and mixing is 1000r/min, and the stirring time is 5 min.
Optimization example 2
The preparation method of the modified bentonite composite carbon nanotube of the embodiment comprises the following steps:
s1: sending 10 parts of bentonite into 20 parts of coupling agent solution, then adding 5 parts of hydrochloric acid and 6 parts of sodium alginate, stirring at the rotating speed of 350r/min for 25min, and obtaining bentonite modification liquid after stirring;
s2: adding the carbon nano tube into 10 parts of rare earth liquid, stirring and modifying, wherein the stirring temperature is 75 ℃, the stirring speed is 370r/min, the stirring time is 20min, and after the stirring is finished, washing and drying to obtain a modified carbon nano tube;
s3: and adding 3 times of bentonite modification solution into the modified carbon nano tube, stirring and mixing fully, washing with water, and drying to obtain the modified bentonite composite carbon nano tube.
The coupling agent solution of the embodiment is formed by mixing a coupling agent and ethanol according to the weight ratio of 1: 5.
The rare earth liquid in the embodiment is rare earth lanthanum chloride with the mass fraction of 10%.
The rare earth liquid in the embodiment is rare earth lanthanum chloride with the mass fraction of 7.5%.
In the present embodiment, the rotation speed of the S3 stirring and mixing is 1500r/min, and the stirring time is 10 min.
Optimization example 3
The preparation method of the modified bentonite composite carbon nanotube of the embodiment comprises the following steps:
s1: sending 7.5 parts of bentonite into 15 parts of coupling agent solution, then adding 3 parts of hydrochloric acid and 4.5 parts of sodium alginate, stirring at the rotating speed of 325r/min for 20min, and obtaining bentonite modification solution after stirring;
s2: adding the carbon nano tube into 7.5 parts of rare earth liquid, stirring and modifying, wherein the stirring temperature is 70 ℃, the stirring speed is 360r/min, the stirring time is 15min, and after stirring, washing and drying are carried out to obtain a modified carbon nano tube;
s3: and adding 2.5 times of bentonite modification solution into the modified carbon nano tube, stirring and mixing fully, washing with water, and drying to obtain the modified bentonite composite carbon nano tube.
The coupling agent solution of the embodiment is formed by mixing a coupling agent and ethanol according to the weight ratio of 1: 5.
The rare earth liquid in the embodiment is rare earth lanthanum chloride with the mass fraction of 7.5%.
In the present embodiment, the rotation speed of the S3 for sufficient stirring and mixing is 1250r/min, and the stirring time is 7.5 min.
Through the tests of optimization examples 1-3, the modified bentonite composite carbon nano tube can further enhance the synergistic performance of the seedling strengthening agent of the product.
The appearance of the rice seedling strengthening agent is a manifestation of scientific and technical development, and the appearance of the agent also promotes the development of the rice planting industry in China. The plant growth regulator has obvious disease prevention and bacteriostasis effects, so that the seedling quality can be obviously improved, the growth and development of rice can be promoted, the mature period can be shortened, the rice yield can be improved by applying the plant growth regulator, and the economic benefit can be improved: but also can simplify the procedure of seedling raising, greatly reduce the labor intensity of farmers and further save the cost (Wang Xiyan, 2015). With the progress and development of science and technology, the technologies of dry seedling raising and plastic tray seedling raising are continuously popularized, and seedling-strengthening agents, i.e. agents for promoting the cultivation of strong seedlings, are developed and are applied to agricultural production in a product form. Because the method has the advantages of less input time and lower input cost, the seedling raising efficiency, the seedling quality and the rice yield can be obviously improved, and the method is widely applied to various rice growing areas in China at present. With the expanding application range of the seedling strengthening agent, various brands of the seedling strengthening agent for rice should be born (Song Wei et al, 2016). The seedling strengthening agent can be applied to the dry-raised seedling strengthening process of rice, and can complete four procedures of bed soil disinfection, acid regulation, seedling nutrition supply and chemical control at one time and high efficiency. The method is convenient to operate, has obvious effects, and has the advantages of disease control and seedling strengthening and yield increasing (Zhanggui Fang, et al, 2013; Lidella, et al, 2010).
Urea, diammonium phosphate, potassium sulfate and composite trace elements in the seedling strengthening agent are conventional substances for improving N, P, K and trace elements for rice, and corn steep liquor dry powder, composite amino acid, ATP, trehalose and chitosan oligosaccharide are novel fertilizers, and the effect on rice is not clear, so that the experiment is matched with the conventional substances such as metalaxyl, biochar, silicon fertilizer, indoleacetic acid and Trichoderma harzianum and the novel fertilizers such as corn steep liquor dry powder, composite amino acid, ATP, trehalose and chitosan oligosaccharide on the basis of the conventional fertilizers to develop a novel multi-effect seedling strengthening agent for rice seedbeds.
The experiment finds that the performance of the seedling strengthening agent B in the prepared 5 seedbed seedling strengthening agents is optimal, the seedling strengthening agent B is the seedling strengthening agent which is most suitable for the seedbed stage of rice in comprehensive performance at present, but the types of the prepared seedling strengthening agents are few, different proportions of different substances in the seedling strengthening agent are still needed to be further researched, and in conclusion, the novel seedling strengthening agent for rice has a larger application prospect in the fields of agriculture and the like in the future.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A novel rice seedbed seedling strengthening agent is characterized by comprising the following raw materials in parts by weight:
10-14 parts of urea, 17-19 parts of ammonium dihydrogen phosphate, 9-11 parts of potassium sulfate, 0.1-0.3 part of vitamin complex, 0.8-1.2 parts of corn steep liquor dry powder, 8-12 parts of compound amino acid powder, 0.1-0.3 part of ATP, 8-12 parts of trehalose, 0.3-0.5 part of chitosan oligosaccharide, 0.5-0.7 part of metalaxyl, 95-105 parts of biochar, 1-2 parts of trichoderma harzianum, 0.4-0.6 part of silicon fertilizer and 0.1-0.3 part of indoleacetic acid.
2. A novel rice seedbed seedling strengthening agent as claimed in claim 1, wherein the vitamin complex is one or more of vitamin A, vitamin B1, vitamin C, vitamin E and vitamin K.
3. The novel rice seedbed seedling-strengthening agent as claimed in claim 1, wherein the compound amino acid powder is one or more of glycine, alanine, leucine, isoleucine and valine.
4. A novel rice seedbed seedling strengthening agent as claimed in claim 1, wherein the seedling strengthening agent is further added with modified bentonite composite carbon nanotubes, and the addition amount is 5-10% of the total amount of urea.
5. A novel rice seedbed seedling strengthening agent as claimed in claim 4, wherein the preparation method of the modified bentonite composite carbon nanotube comprises:
s1: 5-10 parts of bentonite is sent into 10-20 parts of coupling agent solution, then 1-5 parts of hydrochloric acid and 3-6 parts of sodium alginate are added, stirring is carried out for 15-25min at the rotating speed of 300-350r/min, and the bentonite modification solution is obtained after the stirring is finished;
s2: adding the carbon nano tube into 5-10 parts of rare earth liquid, stirring and modifying, wherein the stirring temperature is 65-75 ℃, the stirring speed is 350-370r/min, the stirring time is 10-20min, and after stirring, washing and drying are carried out to obtain a modified carbon nano tube;
s3: adding 2-3 times of bentonite modification liquid into the modified carbon nano tube, stirring and mixing fully, then washing and drying to obtain the modified bentonite composite carbon nano tube.
6. A novel rice seedbed seedling strengthening agent as claimed in claim 5, wherein the coupling agent solution is prepared by mixing a coupling agent and ethanol according to a weight ratio of 1: 5.
7. A novel rice seedbed seedling-strengthening agent as claimed in claim 5, wherein the rare earth liquid is rare earth lanthanum chloride with mass fraction of 5-10%.
8. A novel rice seedbed seedling-strengthening agent as claimed in claim 7, wherein the rare earth liquid is rare earth lanthanum chloride with a mass fraction of 7.5%.
9. The novel rice seedbed seedling-strengthening agent as claimed in claim 5, wherein the rotation speed of S3 for sufficient stirring and mixing is 1000-1500r/min, and the stirring time is 5-10 min.
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