CN112273028A - Method for preventing and treating rice blast - Google Patents
Method for preventing and treating rice blast Download PDFInfo
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- CN112273028A CN112273028A CN202011173403.8A CN202011173403A CN112273028A CN 112273028 A CN112273028 A CN 112273028A CN 202011173403 A CN202011173403 A CN 202011173403A CN 112273028 A CN112273028 A CN 112273028A
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 61
- 235000009566 rice Nutrition 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 25
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 60
- 238000005507 spraying Methods 0.000 claims abstract description 37
- DQJCHOQLCLEDLL-UHFFFAOYSA-N tricyclazole Chemical compound CC1=CC=CC2=C1N1C=NN=C1S2 DQJCHOQLCLEDLL-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000375 suspending agent Substances 0.000 claims abstract description 32
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims abstract description 24
- 235000019796 monopotassium phosphate Nutrition 0.000 claims abstract description 24
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003814 drug Substances 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-M dihydrogenphosphate Chemical compound OP(O)([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-M 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 241001061264 Astragalus Species 0.000 claims description 14
- 235000010110 Astragalus glycyphyllos Nutrition 0.000 claims description 14
- 235000006533 astragalus Nutrition 0.000 claims description 14
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 12
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims description 12
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims description 7
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 7
- 235000019691 monocalcium phosphate Nutrition 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000000618 nitrogen fertilizer Substances 0.000 claims description 6
- 239000001103 potassium chloride Substances 0.000 claims description 6
- 235000011164 potassium chloride Nutrition 0.000 claims description 6
- 239000008267 milk Substances 0.000 claims description 5
- 210000004080 milk Anatomy 0.000 claims description 5
- 235000013336 milk Nutrition 0.000 claims description 5
- 239000003337 fertilizer Substances 0.000 claims description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 2
- 229940072033 potash Drugs 0.000 claims description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 2
- 235000015320 potassium carbonate Nutrition 0.000 claims description 2
- 241001330975 Magnaporthe oryzae Species 0.000 claims 6
- 241000607479 Yersinia pestis Species 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 3
- 241000238631 Hexapoda Species 0.000 abstract description 2
- 241000894006 Bacteria Species 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 244000052616 bacterial pathogen Species 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 235000013339 cereals Nutrition 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- XUMBMVFBXHLACL-UHFFFAOYSA-N Melanin Chemical compound O=C1C(=O)C(C2=CNC3=C(C(C(=O)C4=C32)=O)C)=C2C4=CNC2=C1C XUMBMVFBXHLACL-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015816 nutrient absorption Nutrition 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000004763 spore germination Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
- A01G22/22—Rice
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- 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
-
- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
- C05G5/23—Solutions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Botany (AREA)
- Soil Sciences (AREA)
- Plant Pathology (AREA)
- Fertilizers (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The application discloses a method for preventing and treating rice blast, which belongs to the technical field of prevention and treatment of rice diseases and insect pests, and comprises the following steps: step one, treating a planting field; step two, seedling culture: spraying a potassium dihydrogen phosphate solution with the concentration of 0.3-0.4% twice on the leaf surfaces of the seedlings from the 4-leaf stage of the seedling bed stage of the seedlings to before transplanting and planting, wherein the spraying amount of a liquid medicine per mu is 50-60 Kg, and adding 50-60 g of 35-40% tricyclazole suspending agent into the potassium dihydrogen phosphate solution during the second application; step three, treating the planting field before transplanting the seedlings; step four, transplanting the seedlings; step five, processing the transplanted seedlings: after 15-40 days after transplanting and cutting the seedlings, mixing 50-60 kg of 0.3% dihydrogen phosphate solution and 50-60 g of 40% tricyclazole suspending agent per mu, adding water, spraying once, and spraying once again according to the same method in the rice break period. The growth of seedlings is promoted by planting, and the rice blast can be prevented by inhibiting the spore of rice blast bacteria through the tricyclazole suspending agent.
Description
Technical Field
The invention relates to the technical field of rice disease and insect pest control, in particular to a method for controlling rice blast.
Background
The rice is an important grain crop in the world, the cultivation area is second to wheat and corn, the rice yield occupies more than 1/4 of the total grain yield in the world, and the rice yield occupies more than half of the total grain yield in China. The rice blast, also known as rice fever, fire blast, kowter blast and the like, is caused by pathogenic rice blast and is a disease of rice, and the rice blast can occur in the whole growth cycle of the rice. At present, in production practice, tricyclazole is generally selected to prevent and treat rice blast, single-drug prevention and treatment of germs easily generate resistance, and the prevention and treatment of rice blast are not considered from the standardized planting of rice. Therefore, the applicant has long practiced and combined with the pesticide and the normalized planting of rice to control the rice blast.
Disclosure of Invention
The invention aims to provide a method for preventing and treating rice blast so as to achieve the aim of preventing and treating the rice blast by combining pesticide and the standardized planting of rice.
In order to achieve the purpose, the invention provides the following technical scheme: a method for controlling rice blast, comprising the steps of:
step one, planting field treatment: in the milk ripeness stage of the rice in the previous season, 1-3 kg of milk vetch is sown in each mu of planting land, the milk vetch is harvested in the full-bloom stage of the vertical year and turned into the planting land to be thoroughly decomposed for more than 30d, and no nitrogen fertilizer is applied in the whole production season of the rice;
step two, seedling culture: spraying a potassium dihydrogen phosphate solution with the concentration of 0.3-0.4% twice on the leaf surfaces of the seedlings from the 4-leaf stage of the seedling bed stage of the seedlings to before transplanting and planting, wherein the spraying amount of a liquid medicine per mu is 50-60 Kg, and adding 50-60 g of 35-40% tricyclazole suspending agent into the potassium dihydrogen phosphate solution during the second application;
step three, treating the planting field before transplanting the seedlings: 15-20 kg of potassium chloride with the content of more than 85% and 40-60 kg of calcium superphosphate with the content of more than 16% of phosphorus pentoxide are applied to each mu;
step four, transplanting the seedlings: planting the seedlings treated in the step two in the planting field treated in the step three;
step five, processing the transplanted seedlings: after 15-40 days after transplanting and cutting the seedlings, mixing 0.3% concentration dihydrogen phosphate solution and 40% concentration tricyclazole suspending agent per mu to obtain 50-60 g total weight, adding water and spraying once, and spraying once again according to the same method during the rice break period.
The working principle and the beneficial effects of the invention are as follows: step one, adopting milk vetch as green manure, wherein the milk vetch has the nitrogen fixation function and can absorb air to fix nitrogen, harvesting the milk vetch in the full-bloom stage and turning the milk vetch into a planting field to rot, so that the nitrogen element content of soil can be increased, the trace nitrogen element is used for benefiting the growth of later-stage seedlings, potassium chloride and phosphorus pentoxide are applied in step three, no nitrogen fertilizer is applied in the whole growth period of rice, the nitrogen element content in the soil can be controlled, and the nitrogen element is required for the growth and differentiation of rice blast pathogenic bacteria to participate, so that the growth of the rice blast pathogenic bacteria can be limited, and the content of blast pathogenic bacteria in the soil can be reduced.
And spraying a potassium dihydrogen phosphate solution in the second step and the fifth step, wherein the potassium dihydrogen phosphate can promote nutrient absorption and photosynthesis of seedlings and improve the stress resistance of the seedlings, and the sterilization mechanism of the tricyclazole suspending agent is mainly to inhibit the formation of melanin of attached spores, so that spore germination and growth of spore hyphae are inhibited, pathogenic bacteria are prevented from invading people, and the generation of rice blast germ spores is reduced.
Further, in the second step, the concentration of the potassium dihydrogen phosphate solution is 0.3%, the spraying amount of the liquid medicine per mu is 50Kg, the concentration of the tricyclazole suspending agent is 35%, and the adding amount of the tricyclazole suspending agent is 50 g.
Further, in the second step, the concentration of the potassium dihydrogen phosphate solution is 0.4%, the spraying amount of the liquid medicine per mu is 55Kg, the concentration of the tricyclazole suspending agent is 40%, and the adding amount of the tricyclazole suspending agent is 59 g.
Further, in the second step, the concentration of the potassium dihydrogen phosphate solution is 0.4%, the spraying amount of the liquid medicine per mu is 60Kg, the concentration of the tricyclazole suspending agent is 40%, and the adding amount of the tricyclazole suspending agent is 60 g.
Further, 15kg of potash fertilizer and 50kg of calcium superphosphate are applied in the third step. The fertilizing amount at the ratio is beneficial to the survival of the seedlings.
Further, mechanically transplanting the seedlings in the fourth step, wherein the seedling age is less than 25 days, and 1.1-1.2 ten thousand clusters are planted per mu; adopting artificial seedling cutting, controlling the seedling age within 35 days, and cutting 1-1.2 million bundles per mu. Because of the difference between the mechanical transplanting and the artificial transplanting, the survival of the seedlings is facilitated by controlling the proportion.
Further, the adding amount of water in the fifth step is 50-60 kg. The concentration of the tricyclazole suspending agent is lower when the adding amount of the water is too large, the concentration of the tricyclazole suspending agent is higher when the adding amount of the water is too small, and the adding amount of the water is proper according to the proportion.
Detailed Description
The following is further detailed by way of specific embodiments:
example 1, a method for controlling rice blast, comprising the steps of:
step one, planting field treatment: in the milk ripeness stage of the rice in the previous season, 1 kg of milk vetch is sown in each mu of the planting field, the milk vetch is harvested in the full-bloom stage of the vertical year and turned into the planting field to be thoroughly decomposed for 30d, and no nitrogen fertilizer is applied in the whole production season of the rice;
step two, seedling culture: spraying a potassium dihydrogen phosphate solution with the concentration of 0.3 percent twice on the leaf surfaces of the seedlings from the 4-leaf stage of the seedling bed stage of the seedlings to before transplanting and planting land, wherein the spraying amount of a liquid medicine per mu is 50Kg, and adding 50g of 35 percent tricyclazole suspending agent into the potassium dihydrogen phosphate solution during the second application;
step three, treating the planting field before transplanting the seedlings: 15kg of potassium chloride with the content of more than 85 percent and 40kg of calcium superphosphate with the content of more than 16 percent of phosphorus pentoxide are applied to each mu;
step four, transplanting the seedlings: planting the seedlings treated in the step two in the planting field treated in the step three, and transplanting the seedlings mechanically, wherein the seedling age is less than 25 days, and 1.1 ten thousand clusters are planted per mu; adopting artificial cutting, the seedling age is controlled within 35 days, and 1 ten thousand bundles of seedlings are cut per mu.
Step five, processing the transplanted seedlings: 15 days after transplanting and cutting the seedlings, mixing 0.3 percent concentration dihydrogen phosphate solution and 40 percent concentration tricyclazole suspending agent per mu to obtain 50g of total weight, adding water and spraying once, wherein the adding amount of the water is 50kg, and spraying once again according to the same method when the rice is in the break period.
Example 2: a method for controlling rice blast, comprising the steps of:
step one, planting field treatment: in the milk ripeness stage of the rice in the previous season, 2 kilograms of milk vetch are sown in each mu of planting land, the milk vetch is harvested in the full-bloom stage of the vertical year and turned into the planting land to be thoroughly decomposed for 32 days, and no nitrogen fertilizer is applied in the whole production season of the rice;
step two, seedling culture: spraying potassium dihydrogen phosphate solution with concentration of 0.4% twice on the leaf surface of the seedling from the 4-leaf stage of the seedling bed stage of the seedling to the place before transplanting, wherein the spraying amount of the liquid medicine per mu is 55Kg, and adding 59g of tricyclazole suspending agent with concentration of 40% into the potassium dihydrogen phosphate solution during the second application;
step three, treating the planting field before transplanting the seedlings: 15kg of potassium chloride with the content of more than 85 percent and 50kg of calcium superphosphate with the content of more than 16 percent of phosphorus pentoxide are applied to each mu;
step four, transplanting the seedlings: planting the seedlings treated in the step two in the planting field treated in the step three, and transplanting the seedlings mechanically, wherein the seedling age is less than 25 days, and 1.2 million clusters are planted per mu; adopting artificial cutting, the seedling age is controlled within 35 days, and 1 ten thousand bundles of seedlings are cut per mu.
Step five, processing the transplanted seedlings: 30 days after transplanting and cutting the seedlings, adding 0.3 percent of dihydrogen phosphate solution and 40 percent of tricyclazole suspending agent into each mu of rice, mixing, then weighing 50g of the total weight, adding water, spraying once, wherein the adding amount of the water is 55kg, and spraying once again according to the same method when the rice is in the crevasse period.
Example 3: a method for controlling rice blast, comprising the steps of:
step one, planting field treatment: in the milk ripeness stage of the rice in the previous season, 3 kilograms of milk vetch are sown in each mu of planting land, the milk vetch is harvested in the full-bloom stage of the vertical year and turned into the planting land for being thoroughly decomposed for 35 days, and no nitrogen fertilizer is applied in the whole production season of the rice;
step two, seedling culture: spraying potassium dihydrogen phosphate solution with concentration of 0.4% twice on the leaf surface of the seedling from the 4-leaf stage of the seedling bed stage of the seedling to the place before transplanting, wherein the spraying amount of the liquid medicine per mu is 60Kg, and adding 60g of tricyclazole suspending agent with concentration of 40% into the potassium dihydrogen phosphate solution during the second application;
step three, treating the planting field before transplanting the seedlings: applying 20kg of potassium chloride with the content of more than 85 percent and 60kg of calcium superphosphate with the content of more than 16 percent of phosphorus pentoxide to each mu;
step four, transplanting the seedlings: planting the seedlings treated in the step two in the planting field treated in the step three, and transplanting the seedlings mechanically, wherein the seedling age is less than 25 days, and 1.2 million clusters are planted per mu; adopting artificial cutting, the seedling age is controlled within 35 days, and 1.2 million bundles are cut per mu.
Step five, processing the transplanted seedlings: after seedlings are transplanted and cut for 40 days, 0.3 percent of dihydrogen phosphate solution and 40 percent of tricyclazole suspending agent are mixed for each mu, the total weight is 60g, water is added for spraying once, the adding amount of the water is 60kg, and the spraying is carried out once again according to the same method when the opening of rice is broken.
Comparative example: step one, seedling culture: spraying potassium dihydrogen phosphate solution with concentration of 0.4% twice on the leaf surface of the seedling from the 4-leaf stage of the seedling bed stage of the seedling to the place before transplanting, wherein the spraying amount of the liquid medicine per mu is 60Kg, and adding 60g of tricyclazole suspending agent with concentration of 40% into the potassium dihydrogen phosphate solution during the second application;
step two, seedling treatment after transplanting: after seedlings are transplanted and cut for 40 days, 0.3 percent of dihydrogen phosphate solution and 40 percent of tricyclazole suspending agent are mixed per mu, 60kg of water is added, and then spraying is carried out once, and spraying is carried out once again according to the same method during the seedling opening period.
Comparative example: seedling culture: spraying potassium dihydrogen phosphate solution with concentration of 0.4% twice on the leaf surface of the seedling from the 4-leaf stage of the seedling bed stage of the seedling to the place before transplanting, wherein the spraying amount of the liquid medicine per mu is 60Kg, and adding 60g of tricyclazole suspending agent with concentration of 40% into the potassium dihydrogen phosphate solution during the second application; and (3) seedling treatment after transplanting: after seedlings are transplanted and cut for 40 days, 0.3 percent of dihydrogen phosphate solution and 40 percent of tricyclazole suspending agent are mixed for each mu, the total weight is 60g, water is added and sprayed once, the adding amount of the water is 60kg, the mixture is sprayed once again according to the same method when the rice is in the crevasse stage, and nitrogen, phosphorus and potassium fertilizers are applied according to the conventional method.
Comparative examples and examples 1 to 3 show that the average pest index of examples 1 to 3 is less than 35.8% of the average pest index of the comparative examples by sampling and comparing the attack conditions of the rice blast, and the results prove that the rice blast control of examples 1 to 3 is better than the rice blast control of the comparative examples.
It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the invention, and these should be construed as the scope of the invention, which will not affect the effect of the invention and the applicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. A method for controlling rice blast, which is characterized by comprising the following steps: the method comprises the following steps:
step one, planting field treatment: in the milk ripeness stage of the rice in the previous season, 1-3 kg of milk vetch is sown in each mu of planting land, the milk vetch is harvested in the full-bloom stage of the vertical year and turned into the planting land to be thoroughly decomposed for more than 30d, and no nitrogen fertilizer is applied in the whole production season of the rice;
step two, seedling culture: spraying a potassium dihydrogen phosphate solution with the concentration of 0.3-0.4% twice on the leaf surfaces of the seedlings from the 4-leaf stage of the seedling bed stage of the seedlings to before transplanting and planting, wherein the spraying amount of a liquid medicine per mu is 50-60 Kg, and adding 50-60 g of 35-40% tricyclazole suspending agent into the potassium dihydrogen phosphate solution during the second application;
step three, treating the planting field before transplanting the seedlings: 15-20 kg of potassium chloride with the content of more than 85% and 40-60 kg of calcium superphosphate with the content of more than 16% of phosphorus pentoxide are applied to each mu;
step four, transplanting the seedlings: planting the seedlings treated in the step two in the planting field treated in the step three;
step five, processing the transplanted seedlings: after 15-40 days after transplanting and cutting the seedlings, mixing 0.3% concentration dihydrogen phosphate solution and 40% concentration tricyclazole suspending agent per mu to obtain 50-60 g total weight, adding water and spraying once, and spraying once again according to the same method during the rice break period.
2. The method for controlling rice blast of rice as claimed in claim 1, characterized in that: in the second step, the concentration of the potassium dihydrogen phosphate solution is 0.3%, the spraying amount of the liquid medicine per mu is 50Kg, the concentration of the tricyclazole suspending agent is 35%, and the adding amount of the tricyclazole suspending agent is 50 g.
3. The method for controlling rice blast of rice as claimed in claim 2, characterized in that: in the second step, the concentration of the potassium dihydrogen phosphate solution is 0.4%, the spraying amount of the liquid medicine per mu is 55Kg, the concentration of the tricyclazole suspending agent is 40%, and the adding amount of the tricyclazole suspending agent is 59 g.
4. The method for controlling rice blast of rice as claimed in claim 3, characterized in that: in the second step, the concentration of the potassium dihydrogen phosphate solution is 0.4%, the spraying amount of the liquid medicine per mu is 60Kg, the concentration of the tricyclazole suspending agent is 40%, and the adding amount of the tricyclazole suspending agent is 60 g.
5. The method for controlling rice blast of rice as claimed in claim 4, characterized in that: and step three, 15kg of potash fertilizer and 50kg of calcium superphosphate are applied.
6. The method for controlling rice blast of rice as claimed in claim 5, characterized in that: mechanically transplanting the seedlings, wherein the seedling age is less than 25 days, and 1.1-1.2 thousands of clusters are planted per mu; adopting artificial seedling cutting, controlling the seedling age within 35 days, and cutting 1-1.2 million bundles per mu.
7. The method for controlling rice blast of rice as claimed in claim 6, characterized in that: and the adding amount of the water in the fifth step is 50-60 kg.
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| CN202011173403.8A CN112273028A (en) | 2020-10-28 | 2020-10-28 | Method for preventing and treating rice blast |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011173403.8A CN112273028A (en) | 2020-10-28 | 2020-10-28 | Method for preventing and treating rice blast |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116406613A (en) * | 2023-03-22 | 2023-07-11 | 浙江省农业科学院 | Method for improving resistance of rice to rice blast by improving sakurin content through phosphorus deficiency and application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008024665A (en) * | 2006-07-24 | 2008-02-07 | Sumitomo Chemical Co Ltd | Method for controlling rice blast disease |
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| CN116406613B (en) * | 2023-03-22 | 2024-04-30 | 浙江省农业科学院 | Method for improving resistance of rice to rice blast by improving sakurin content through phosphorus deficiency and application |
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