CN112335511A - Cultivation method for improving photosynthetic efficiency and variety stress tolerance of peanuts - Google Patents
Cultivation method for improving photosynthetic efficiency and variety stress tolerance of peanuts Download PDFInfo
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Abstract
The invention discloses a cultivation method for improving the photosynthetic efficiency and the stress tolerance of peanuts, belonging to the technical field of agricultural production. The cultivation method for improving the photosynthetic efficiency and the stress tolerance of the peanut variety disclosed by the invention utilizes the signal substance and the regulating substance to change the photosynthetic efficiency and the stress resistance of the peanut and regulate the growth and development; light respiration is inhibited, moisture and fertilizer are saved, harvest is delayed and yield is increased; and the leaf area index and the biomass are increased, the functional period of the leaves is prolonged, and the photosynthetic efficiency and the pod yield are improved.
Description
Technical Field
The invention relates to the technical field of agricultural production, in particular to a cultivation method for improving the photosynthetic efficiency and the stress tolerance of peanut varieties.
Background
The peanuts are high-efficiency and high-quality oil crops, and provide a large amount of high-quality, safe and healthy vegetable oil for people. High-yield cultivation is an important measure for improving the production benefit of peanuts. Photosynthesis is a way for plants to synthesize energy substances under the action of light by absorbing carbon dioxide and water, thereby promoting the growth and development of plants and the formation of yield. The photo-respiration is a process of decomposing energy into carbon dioxide and water by plants under light, and is a reverse process of substance synthesis. The photosynthesis and the light respiration of different plant varieties are different, so that the possibility for selecting high-light-efficiency varieties is provided.
The stress is an important adverse factor for high yield and high efficiency of peanuts, the stress-tolerant variety screening can realize the purpose of peanut stress synergism, and important stresses influencing the growth of the peanuts comprise drought, saline-alkali and flooding. A plurality of research results show that peanuts are damaged under the adverse conditions, an antioxidant reaction is generated, a signal substance similar to ABA (abscisic acid) is generated, the expression of genes in the peanuts is coordinated, and the stress tolerance of the peanuts is improved.
Ethylene is an important regulating substance for the growth of crops, and the increase of the ethylene content in different periods plays different roles in the growth and development of the crops. Research shows that when peanuts germinate, the ethylene content is rapidly increased, and at the moment, IAA (naphthylacetic acid) and 6-BA (6-benzylamino adenine) play the same role to promote the development and the morphogenesis of cells; in the mature period, the ethylene content in the peanut body is also increased, the peanut pod filling and the leaf senescence are promoted, and the IAA and the 6-BA play opposite roles at the moment. The growth and development of the peanuts can be regulated by regulating the ethylene content and the antagonistic substances thereof in the peanuts at different periods.
Therefore, the problem to be solved by the technical personnel in the field is to provide a cultivation method for improving the photosynthetic efficiency and the stress tolerance of the peanut.
Disclosure of Invention
In view of the above, the present invention provides a cultivation method for improving peanut photosynthetic efficiency and variety stress tolerance, which utilizes signal substances and regulating substances to change peanut photosynthetic efficiency and stress resistance and regulate growth and development.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cultivation method for improving the photosynthetic efficiency and the stress tolerance of peanuts comprises the following specific steps:
1) promote the peanut to sprout quickly in the seedling stage and ensure the seedlings to be uniform and strong
(1) Timely sowing, concentrated strip application of base fertilizer: the average temperature is 15 ℃ during sowing, and the average temperature of 10cm soil is more than 10 ℃; in ridging, base fertilizer is spread on a ridging belt, 70-100g of compound fertilizer is applied to each meter, and the ridging is carried out to cover the bottom of the ridge; when the water content of the soil is lower than 75%, carrying out drip irrigation or sprinkling irrigation on seedling emergence water; the compound fertilizer is 18-18-18 of nitrogen-phosphorus-potassium;
(2) the method has the advantages that the method improves the requirements of the germination conditions on the ethylene level by spraying the peanut seeds with ethephon: the dosage is that 100ml of 40 percent ethephon aqua is sprayed on every 100kg of peanut seeds and 200ml of ethephon aqua is soaked for 10 to 12 hours;
(3) hydrogen peroxide seed soaking to supplement oxygen required for germination: spraying the ethephon soaked peanut seeds with 2-3% of hydrogen peroxide 1-2h before sowing, wherein each 100kg of peanut seeds is sprayed with 200-; the seed quantity for each mu of peanuts is calculated according to a formula: the dosage (kilogram) is (density is multiplied by 2/100 multiplied by the weight of hundred kernels)/1000; density: 8000-11000 holes/mu of large peanuts and 11000-13000 holes/mu of small peanuts; the unit of the weight of the Bairen is gram;
(4) after the peanut seedlings emerge and break the soil, the appearance of dead seedlings and weak seedlings is reduced: after sowing, the peanuts break the soil and emerge seedlings in 7 to 10 days, and mixed solution of 30 to 40 mg/mu of 100PPM (parts per million) IAA, 40 to 60 kg/mu of 2000-fold solution of 25 percent difenoconazole missible oil and 50 g/mu of fulvic acid salt is sprayed;
2) enhancing signal induction, regulating expression of related genes in peanut body, and improving stress tolerance of peanut
(1) Stress signal induction is enhanced in the seedling stage, and stress tolerance exercise of peanuts is promoted: when 3 leaves are unfolded 10 days after the emergence of the peanut, 100-150PPM ABA (abscisic acid) is sprayed on the leaves to 40-60 mg/mu, so as to provide a stress signal for the peanut; spraying leaves 20 days after seedling emergence by using 100-150PPM ABA 40-60 mg/mu again to perform adversity induction on the peanuts;
(2) in the later flowering stage of peanuts, stress signals are induced, so that excessive ineffective flowers are reduced, the adaptation to rainy seasons is improved, and the stress caused by concentrated rainfall is reduced: in late 7 th month, spraying 30-60 mg/mu of 100-200PPM IAA (indoleacetic acid) at the late flowering stage; at the beginning of 8 months, spraying 100-200PPM IAA 30-60 mg/mu again;
3) inhibiting peanut light respiration, reducing ineffective energy consumption, and improving peanut photosynthetic efficiency
(1) In the early stage of flowering, a light respiration inhibitor is sprayed to promote concentrated flowering, and the concentrated flowering is concentrated into a needle: sodium thiosulfate is a strong light respiration inhibitor, and enters a concentrated flowering period 25-30 days after emergence of seedlings, 20 g/mu of sodium thiosulfate, 150 g/mu of monopotassium phosphate and 50-80 g/mu of zinc sulfate are sprayed on leaf surfaces;
(2) during the needle insertion and pod expansion period, the concentrated needle insertion and pod expansion are promoted: 50-60 days after seedling emergence, 30 g/mu of sodium thiosulfate, 150 g/mu of monopotassium phosphate, 150 g/mu of potassium sulfate and 300 g/mu of cane sugar are sprayed on leaf surfaces;
(3) delaying leaf senescence, maintaining the photosynthetic efficiency of later peanut leaves: 30 days before harvesting and before the occurrence of leaf spot, 30 g/mu of sodium thiosulfate, 150 g/mu of monopotassium phosphate 100-minus one, 20-40 mg/mu of 100PPM6-BA (6-benzylaminopurine), 40-60 kg/mu of 1000-fold liquid of 25% tebuconazole wettable powder, 40-60 kg/mu of 1000-fold liquid of 25% difenoconazole missible oil and 40-60 kg/mu of 1200-fold liquid of 50% azoxystrobin missible oil are sprayed on leaf surfaces.
According to the technical scheme, compared with the prior art, the cultivation method for improving the photosynthetic efficiency and the stress tolerance of the peanut is disclosed, and the photosynthetic efficiency, the stress resistance and the growth and development of the peanut are changed by utilizing the signal substance and the regulating substance. The cultivation method of the invention inhibits light respiration, saves water and fertilizer, delays harvest and increases yield; and the leaf area index and the biomass are increased, the functional period of the leaves is prolonged, and the photosynthetic efficiency and the pod yield are improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Example 1
A cultivation method for improving the photosynthetic efficiency and the stress tolerance of peanuts comprises the following specific steps:
1) promote the peanut to sprout quickly in the seedling stage and ensure the seedlings to be uniform and strong
(1) Timely sowing lotus flower No. 11, and centrally applying base fertilizer by strips: the average temperature is 15 ℃ during sowing, and the average temperature of 10cm soil is more than 10 ℃; in ridging, base fertilizer is spread on a ridging belt, 80g of compound fertilizer is applied to each meter of ridging belt, and the ridging is performed to cover the bottom of the ridge; when the water content of the soil is lower than 75%, carrying out drip irrigation or sprinkling irrigation on seedling emergence water; the compound fertilizer is 18-18-18 of nitrogen-phosphorus-potassium;
(2) the method has the advantages that the method improves the requirements of the germination conditions on the ethylene level by spraying the peanut seeds with ethephon: spraying 150ml of 40% ethephon solution per 100kg peanut seeds, and soaking for 11 h;
(3) hydrogen peroxide seed soaking to supplement oxygen required for germination: 1.5h before sowing, spraying 3% hydrogen peroxide on the ethephon-soaked peanut seeds, spraying 200ml of hydrogen peroxide on every 100kg of peanut seeds, and stirring uniformly in the spraying process; the seed quantity for each mu of peanuts is calculated according to a formula: the dosage (kilogram) is (density is multiplied by 2/100 multiplied by the weight of hundred kernels)/1000; density: 8000-11000 holes/mu of large peanuts and 11000-13000 holes/mu of small peanuts; the unit of the weight of the Bairen is gram;
(4) after the peanut seedlings emerge and break the soil, the appearance of dead seedlings and weak seedlings is reduced: after sowing, the peanuts break the soil and emerge seedlings in 7 to 10 days, and mixed solution of 100PPM (parts per million) IAA 35 mg/mu, 25 percent of difenoconazole missible oil 2000 times liquid 50 kg/mu and fulvic acid salt 50 g/mu is sprayed;
2) enhancing signal induction, regulating expression of related genes in peanut body, and improving stress tolerance of peanut
(1) Stress signal induction is enhanced in the seedling stage, and stress tolerance exercise of peanuts is promoted: when 3 leaves are unfolded 10 days after the emergence of the peanuts, 150PPM ABA (abscisic acid) is sprayed on the leaves at a rate of 50 mg/mu, and a stress signal is provided for the peanuts; spraying 150PPM ABA 50 mg/mu leaves 20 days after seedling emergence, and performing adversity induction on the peanuts;
(2) in the later flowering stage of peanuts, stress signals are induced, so that excessive ineffective flowers are reduced, the adaptation to rainy seasons is improved, and the stress caused by concentrated rainfall is reduced: spraying 200PPM IAA (indoleacetic acid) 45 mg/acre in late 7-month ten days at the late flowering stage; spraying 200PPM IAA 45 mg/mu at the beginning of 8 months;
3) inhibiting peanut light respiration, reducing ineffective energy consumption, and improving peanut photosynthetic efficiency
(1) In the early stage of flowering, a light respiration inhibitor is sprayed to promote concentrated flowering, and the concentrated flowering is concentrated into a needle: sodium thiosulfate is a strong light respiration inhibitor, enters a concentrated flowering period 25-30 days after emergence of seedlings, and is sprayed on leaf surfaces of the seedlings at 20 g/mu, 125 g/mu and 65 g/mu of zinc sulfate;
(2) during the needle insertion and pod expansion period, the concentrated needle insertion and pod expansion are promoted: after 50-60 days of emergence, 30 g/mu of sodium thiosulfate, 125 g/mu of monopotassium phosphate, 125 g/mu of potassium sulfate and 250 g/mu of cane sugar are sprayed on leaf surfaces;
(3) delaying leaf senescence, maintaining the photosynthetic efficiency of later peanut leaves: 30 days before harvesting and before leaf spot disease occurs, 30 g/mu of sodium thiosulfate, 125 g/mu of monopotassium phosphate, 30 mg/mu of 100PPM6-BA (6-benzylaminopurine), 1500 times of liquid 50 kg/mu of 25% tebuconazole wettable powder, 1000 times of liquid 50 kg/mu of 25% difenoconazole missible oil and 800 times of liquid 50 kg/mu of 50% azoxystrobin missible oil are sprayed on leaf surfaces.
Example 2
A cultivation method for improving the photosynthetic efficiency and the stress tolerance of peanuts comprises the following specific steps:
1) promote the peanut to sprout quickly in the seedling stage and ensure the seedlings to be uniform and strong
(1) Timely sowing lotus flower No. 11, and centrally applying base fertilizer by strips: the average temperature is 15 ℃ during sowing, and the average temperature of 10cm soil is more than 10 ℃; in ridging, base fertilizer is spread on a ridging belt, 100g of compound fertilizer is applied to each meter, and the ridging is carried out to cover the bottom of the ridge; when the water content of the soil is lower than 75%, carrying out drip irrigation or sprinkling irrigation on seedling emergence water; the compound fertilizer is 18-18-18 of nitrogen-phosphorus-potassium;
(2) the method has the advantages that the method improves the requirements of the germination conditions on the ethylene level by spraying the peanut seeds with ethephon: spraying 200ml of 40% ethephon solution per 100kg peanut seeds, and soaking for 12 h;
(3) hydrogen peroxide seed soaking to supplement oxygen required for germination: spraying 3% hydrogen peroxide 2h before sowing, spraying 300ml of ethephon soaked peanut seeds per 100kg of peanut seeds, and stirring uniformly in the spraying process; the seed quantity for each mu of peanuts is calculated according to a formula: the dosage (kilogram) is (density is multiplied by 2/100 multiplied by the weight of hundred kernels)/1000; density: 8000-11000 holes/mu of large peanuts and 11000-13000 holes/mu of small peanuts; the unit of the weight of the Bairen is gram;
(4) after the peanut seedlings emerge and break the soil, the appearance of dead seedlings and weak seedlings is reduced: after sowing, the peanuts break the soil and emerge seedlings in 7 to 10 days, and mixed solution of 100PPM (parts per million) IAA 40 mg/mu, 25 percent of difenoconazole missible oil 2000 times liquid 60 kg/mu and fulvic acid salt 50 g/mu is sprayed;
2) enhancing signal induction, regulating expression of related genes in peanut body, and improving stress tolerance of peanut
(1) Stress signal induction is enhanced in the seedling stage, and stress tolerance exercise of peanuts is promoted: when 3 leaves are unfolded 10 days after the emergence of the peanuts, 150PPM ABA (abscisic acid) is sprayed on the leaves to 40 mg/mu, and a stress signal is provided for the peanuts; spraying 150PPM ABA 40 mg/mu leaves 20 days after seedling emergence, and performing adversity induction on the peanuts;
(2) in the later flowering stage of peanuts, stress signals are induced, so that excessive ineffective flowers are reduced, the adaptation to rainy seasons is improved, and the stress caused by concentrated rainfall is reduced: spraying IAA (indoleacetic acid) of 200PPM 30 mg/acre in late 7-month late ten days at the late flowering stage; spraying 200PPM IAA 30 mg/mu at the beginning of 8 months;
3) inhibiting peanut light respiration, reducing ineffective energy consumption, and improving peanut photosynthetic efficiency
(1) In the early stage of flowering, a light respiration inhibitor is sprayed to promote concentrated flowering, and the concentrated flowering is concentrated into a needle: sodium thiosulfate is a strong light respiration inhibitor, enters a concentrated flowering period 25-30 days after emergence of seedlings, and is sprayed on leaf surfaces of the seedlings at a concentration of 20 g/mu, 150 g/mu of monopotassium phosphate and 80 g/mu of zinc sulfate;
(2) during the needle insertion and pod expansion period, the concentrated needle insertion and pod expansion are promoted: after 50-60 days of emergence, 30 g/mu of sodium thiosulfate, 150 g/mu of monopotassium phosphate, 150 g/mu of potassium sulfate and 300 g/mu of cane sugar are sprayed on leaf surfaces;
(3) delaying leaf senescence, maintaining the photosynthetic efficiency of later peanut leaves: 30 days before harvesting and before leaf spot disease occurs, 30 g/mu of sodium thiosulfate, 150 g/mu of monopotassium phosphate, 40 mg/mu of 100PPM6-BA (6-benzylaminopurine), 1000-fold liquid 60 kg/mu of 25% tebuconazole wettable powder, 1000-fold liquid 60 kg/mu of 25% difenoconazole missible oil and 1200-fold liquid 40 kg/mu of 50% azoxystrobin missible oil are sprayed on leaf surfaces.
Example 3
A cultivation method for improving the photosynthetic efficiency and the stress tolerance of peanuts comprises the following specific steps:
1) promote the peanut to sprout quickly in the seedling stage and ensure the seedlings to be uniform and strong
(1) Timely sowing lotus flower No. 11, and centrally applying base fertilizer by strips: the average temperature is 15 ℃ during sowing, and the average temperature of 10cm soil is more than 10 ℃; in ridging, base fertilizer is spread on a ridging belt, 70g of compound fertilizer is applied to each meter, and the ridging is carried out to cover the bottom of the ridge; when the water content of the soil is lower than 75%, carrying out drip irrigation or sprinkling irrigation on seedling emergence water; the compound fertilizer is 18-18-18 of nitrogen-phosphorus-potassium;
(2) the method has the advantages that the method improves the requirements of the germination conditions on the ethylene level by spraying the peanut seeds with ethephon: the dosage is 100ml of 40 percent ethephon water agent sprayed on every 100kg of peanut seeds, and the peanut seeds are soaked for 10 hours;
(3) hydrogen peroxide seed soaking to supplement oxygen required for germination: spraying ethephon soaked peanut seeds with 2% hydrogen peroxide 1h before sowing, wherein 200ml of ethephon soaked peanut seeds are sprayed per 100kg of ethephon soaked peanut seeds, and stirring uniformly in the spraying process; the seed quantity for each mu of peanuts is calculated according to a formula: the dosage (kilogram) is (density is multiplied by 2/100 multiplied by the weight of hundred kernels)/1000; density: 8000-11000 holes/mu of large peanuts and 11000-13000 holes/mu of small peanuts; the unit of the weight of the Bairen is gram;
(4) after the peanut seedlings emerge and break the soil, the appearance of dead seedlings and weak seedlings is reduced: after sowing, the peanuts break the soil and emerge seedlings in 7 to 10 days, and mixed solution of 100PPM (parts per million) IAA 30 mg/mu, 25 percent of difenoconazole missible oil 2000 times liquid 40 kg/mu and fulvic acid salt 50 g/mu is sprayed;
2) enhancing signal induction, regulating expression of related genes in peanut body, and improving stress tolerance of peanut
(1) Stress signal induction is enhanced in the seedling stage, and stress tolerance exercise of peanuts is promoted: when 3 leaves are unfolded 10 days after the emergence of the peanuts, 100PPM ABA (abscisic acid) is sprayed on the leaves to reach 60 mg/mu, so that a stress signal is provided for the peanuts; spraying leaves 20 days after seedling emergence with 100PPM ABA 60 mg/mu, and performing adversity induction on the peanuts;
(2) in the later flowering stage of peanuts, stress signals are induced, so that excessive ineffective flowers are reduced, the adaptation to rainy seasons is improved, and the stress caused by concentrated rainfall is reduced: spraying 100PPM IAA (indoleacetic acid) 60 mg/acre in late 7-month ten days at the late flowering stage; spraying 100PPM IAA 60 mg/mu at the beginning of 8 months;
3) inhibiting peanut light respiration, reducing ineffective energy consumption, and improving peanut photosynthetic efficiency
(1) In the early stage of flowering, a light respiration inhibitor is sprayed to promote concentrated flowering, and the concentrated flowering is concentrated into a needle: sodium thiosulfate is a strong light respiration inhibitor, enters a concentrated flowering period 25-30 days after emergence of seedlings, and is sprayed on leaf surfaces of the seedlings at a concentration of 20 g/mu, 100 g/mu of monopotassium phosphate and 50 g/mu of zinc sulfate;
(2) during the needle insertion and pod expansion period, the concentrated needle insertion and pod expansion are promoted: after 50-60 days of emergence, 30 g/mu of sodium thiosulfate, 100 g/mu of monopotassium phosphate, 100 g/mu of potassium sulfate and 200 g/mu of cane sugar are sprayed on leaf surfaces;
(3) delaying leaf senescence, maintaining the photosynthetic efficiency of later peanut leaves: 30 days before harvesting and before leaf spot disease occurs, 30 g/mu of sodium thiosulfate, 100 g/mu of monopotassium phosphate, 20 mg/mu of 100PPM6-BA (6-benzylaminopurine), 1000-fold liquid 60 kg/mu of 25% tebuconazole wettable powder, 1000-fold liquid 40 kg/mu of 25% difenoconazole missible oil and 800-fold liquid 60 kg/mu of 50% azoxystrobin missible oil are sprayed on leaf surfaces.
Comparative example
The conventional planting method comprises the following steps: irrigating first, the water consumption per mu is 40-60m3And then deeply turning and ridging, husking seeds at a seeding rate of 15 kg/mu, sowing seeds at a density of 10000 holes/mu, and dibbling the seeds at double seeds. And the paclobutrazol is adopted for chemical control in the field, diseases and insect pests are prevented and treated in time, and the rice is harvested at a proper period.
Peanuts were cultivated by the cultivation method according to examples 1 to 3 of the present invention and comparative example, and the parameters were recorded, and the results are shown in table 1.
TABLE 1
As can be seen from Table 1, by using the cultivation methods of examples 1 to 3 of the present invention, compared with the prior art cultivation techniques of comparative examples, photo-respiration was suppressed, moisture and fertilizer were saved, harvest was delayed and yield increased; and the leaf area index and the biomass are increased, the functional period of the leaves is prolonged, and the photosynthetic efficiency and the pod yield are improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. A cultivation method for improving the photosynthetic efficiency and the stress tolerance of peanuts is characterized by comprising the following specific steps:
1) promote the peanut to sprout quickly in the seedling stage and ensure the seedlings to be uniform and strong
(1) Timely sowing, concentrated strip application of base fertilizer: the average temperature is 15 ℃ during sowing, and the average temperature of 10cm soil is more than 10 ℃; in ridging, base fertilizer is spread on a ridging belt, 70-100g of compound fertilizer is applied to each meter, and the ridging is carried out to cover the bottom of the ridge; when the water content of the soil is lower than 75%, carrying out drip irrigation or sprinkling irrigation on seedling emergence water;
(2) spraying peanut seeds with ethephon, spraying 100ml of 40% ethephon water agent per 100kg of peanut seeds, and soaking for 10-12 h;
(3) hydrogen peroxide seed soaking to supplement oxygen required for germination: spraying the ethephon soaked peanut seeds with 2-3% of hydrogen peroxide 1-2h before sowing, wherein each 100kg of peanut seeds is sprayed with 200-; the seed quantity for each mu of peanuts is calculated according to a formula: the dosage (kilogram) is (density is multiplied by 2/100 multiplied by the weight of hundred kernels)/1000; density: 8000-11000 holes/mu of large peanuts and 11000-13000 holes/mu of small peanuts; the unit of the weight of the Bairen is gram;
(4) after the peanut seedlings emerge and break the soil, the appearance of dead seedlings and weak seedlings is reduced: after sowing, after 7-10 days, the peanuts break the soil and emerge seedlings, and mixed solution of 30-40 mg/mu of 100PPM IAA, 40-60 kg/mu of 25% difenoconazole missible oil 2000 times liquid and 50 g/mu of fulvic acid salt is sprayed;
2) enhancing signal induction, regulating expression of related genes in peanut body, and improving stress tolerance of peanut
(1) Stress signal induction is enhanced in the seedling stage, and stress tolerance exercise of peanuts is promoted: when 3 leaves are unfolded 10 days after the emergence of the peanuts, 100-150PPM ABA 40-60 mg/mu is sprayed on the leaves to provide a stress signal for the peanuts; spraying leaves 20 days after seedling emergence by using 100-150PPM ABA 40-60 mg/mu again to perform adversity induction on the peanuts;
(2) in the later flowering stage of peanuts, stress signals are induced, so that excessive ineffective flowers are reduced, the adaptation to rainy seasons is improved, and the stress caused by concentrated rainfall is reduced: in late 7 th month, spraying 100 plus 200PPM IAA 30-60 mg/mu at the later stage of flowering; at the beginning of 8 months, spraying 100-200PPM IAA 30-60 mg/mu again;
3) inhibiting peanut light respiration, reducing ineffective energy consumption, and improving peanut photosynthetic efficiency
(1) In the early stage of flowering, a light respiration inhibitor is sprayed to promote concentrated flowering, and the concentrated flowering is concentrated into a needle: after seedling emergence, the seedlings enter a concentrated flowering period in 25-30 days, 20 g/mu of sodium thiosulfate, 150 g/mu of monopotassium phosphate and 50-80 g/mu of zinc sulfate are sprayed on leaf surfaces;
(2) during the needle insertion and pod expansion period, the concentrated needle insertion and pod expansion are promoted: 50-60 days after seedling emergence, 30 g/mu of sodium thiosulfate, 150 g/mu of monopotassium phosphate, 150 g/mu of potassium sulfate and 300 g/mu of cane sugar are sprayed on leaf surfaces;
(3) delaying leaf senescence, maintaining the photosynthetic efficiency of later peanut leaves: 30 days before harvesting and before the occurrence of leaf spot, 30 g/mu of sodium thiosulfate, 100 g/mu of monopotassium phosphate, 20-40 mg/mu of 100PPM6-BA, 40-60 kg/mu of 1500-fold liquid of 25% tebuconazole wettable powder, 40-60 kg/mu of 1000-fold liquid of 25% difenoconazole missible oil and 40-60 kg/mu of 1200-fold liquid of 50% azoxystrobin missible oil are sprayed on leaf surfaces.
2. The cultivation method for improving the photosynthetic efficiency and the stress tolerance of the peanut variety according to claim 1, wherein in the step 1) (1), the compound fertilizer is nitrogen-phosphorus-potassium ═ 18-18-18.
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| CN114258831A (en) * | 2021-12-17 | 2022-04-01 | 菏泽市农业科学院 | Method for controlling flower, filling and increasing yield of peanuts |
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