CN114342760A - Hybrid seed production method for autumn potatoes in Jizhongnan region - Google Patents
Hybrid seed production method for autumn potatoes in Jizhongnan region Download PDFInfo
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- CN114342760A CN114342760A CN202210006761.2A CN202210006761A CN114342760A CN 114342760 A CN114342760 A CN 114342760A CN 202210006761 A CN202210006761 A CN 202210006761A CN 114342760 A CN114342760 A CN 114342760A
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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
- A01G22/25—Root crops, e.g. potatoes, yams, beet or wasabi
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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
- A01G13/00—Protecting plants
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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
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
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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
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
- A01G24/12—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
- A01G24/15—Calcined rock, e.g. perlite, vermiculite or clay aggregates
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
- A01H1/00—Processes for modifying genotypes ; Plants characterised by associated natural traits
- A01H1/02—Methods or apparatus for hybridisation; Artificial pollination ; Fertility
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Abstract
The invention discloses a method for producing hybrid seeds of potatoes in autumn in the south-middle Hei area, which adopts small potato blocks to accelerate large buds and sow the whole potatoes 15-20 days after 7 months, so as to realize quick seedling emergence, uniform and strong seedlings after sowing. The higher temperature condition in 8 months is suitable for the growth of the stems and leaves of the potatoes, the temperature is reduced in 9 and 10 months, the potatoes enter the flowering phase, and hybrid seed production is carried out; by combining the specific management measures of moisture, temperature, fertilizer, plant protection and the like in the potato growth period and the specific pollination means in the flowering period, the problems of seed formation and low fruiting rate in hybrid seed production of the potatoes in the Jizhongnan area are solved, and the bottleneck problem of hybrid breeding of the potatoes in the Jizhongnan area is solved.
Description
Technical Field
The invention relates to the technical field of agricultural planting, in particular to a hybrid seed production method for potatoes in autumn in the south of Jizhong.
Background
The potato is the fourth major food crop in the world, and China is the biggest potato producing and consuming country in the world. The potatoes planted in the southern area of Ji are mainly used as fresh vegetables, and compared with other vegetables, the method is simple to operate, high in benefit and suitable for mechanized cultivation, so that the planting area is enlarged year by year in recent years, but the problems of lack of early-maturing potato varieties, aggravation of diseases and the like are increasingly prominent, and a new early-maturing disease-resistant potato variety suitable for local areas is urgently needed to be bred.
At present, 96.6 percent of the bred potato varieties are bred by hybridization, and the hybridization breeding technology is the most important way for breeding new potato varieties. At present, the potato breeding in the southern part of Ji is mainly carried out in spring, the potato is planted in spring, and the middle and late ten days of 5 months are flowering season; the fruit setting and maturing period is started at the beginning of 6 months, and the period is in high-temperature weather; taking the Shijiazhuang area in the central area of the southern region in Ji as an example, the average value of the highest temperature is 31.8 ℃ in 6 months in the last 5 years, the fruit setting rate is extremely low in high-temperature weather, and the fruit setting rate is extremely low, generally less than 10%, due to high-temperature fruit dropping. The method causes seed setting and extremely low seed formation of hybrid seeds, seriously restricts the process of local potato hybrid breeding, and becomes a main factor for restricting the local breeding of excellent new varieties.
Therefore, the research of the hybrid seed production technology of the potatoes in autumn in the south of Jizhong is a breakthrough for solving the bottleneck problem of breeding of the potatoes in the south of Jizhong.
Disclosure of Invention
In view of the above, the invention provides a hybrid seed production method for potatoes in autumn in the Jizhongnan area, solves the problems of seed production and low seed yield of hybrid seeds for potatoes in the Jizhongnan area, and provides a seed production technology for hybrid seed production of potatoes in the Jizhongnan area.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hybrid seed production method for potatoes in autumn in the south of Jizhong comprises the following steps:
the method comprises the following steps: preparation work before sowing
(1.1) pregermination: accelerating germination in a dark room at the room temperature of 20-25 ℃, and when the sprouts grow for 2-3cm, performing visible light treatment by using an LED lamp with the light intensity of 1500-2000LX to grow large sprouts and strong sprouts;
(1.2) preparing a matrix: uniformly mixing the garden soil and the vermiculite, and uniformly mixing the composted organic fertilizer, the ternary compound fertilizer and the urea;
(1.3) preparing a planting environment: placing a planting substrate in a ventilated greenhouse with a sunshade net and a humidifier;
step two: seeding
Sowing the seed potatoes whose buds are accelerated in the step one, and then watering thoroughly after 15-20 days in 7 months, wherein the sowing distance is 100cm large, the small row distance is 52cm, and the plant distance is 52 cm;
step three: management of growing period
(3.1) moisture management: watering once from 10 days before sowing to fruit harvesting to 3-5 days, keeping the maximum water holding capacity of the soil to be 60-70% before seedling aligning, keeping the maximum water holding capacity of the soil to be 70-80% after seedling aligning, and stopping watering 10 days before fruit harvesting;
(3.2) temperature management: the temperature in the greenhouse is kept between 10 and 29 ℃;
(3.3) fertilizing measures: after seedling is completed, ammonium sulfate is applied along with water, and calcium, magnesium, boron and zinc medium trace element leaf fertilizers are sprayed on leaf surfaces of the seedlings in a rooting period and a bud period respectively once;
(3.4) plant protection measures: the conventional medicine is used for preventing and treating plant diseases and insect pests;
step four: pollination is carried out
(4.1) taking powder: selecting the unetched buds to take out pollen and store the pollen at 4 ℃ for storage at 8:00-10:00 am in the flowering period of 1-10 months and 1-day 9;
(4.2) preparation before pollination: selecting robust inflorescences one day before pollination, removing flowers in the inflorescences and all stamens in buds, covering mesh bags after pollination to prevent pollen from mixing, and opening a greenhouse humidifier before pollination to adjust the relative humidity to 80%;
(4.3) pollination: uniformly coating pollen on stigma at 6:00-9:00 am and 4:00-6:00 pm, coating pollen on stigma twice, coating pollen once in the morning and once in the afternoon, covering mesh bags after pollination, and recording hybridization combination by hanging a label;
step five: fruit setting and harvesting
Harvesting after pollination for 40 days, harvesting seeds after the fruits are ripe and softened, fully drying, bagging, marking and recording the hybridization combination, the number of the seeds and the time, and storing at-20 ℃ for later use.
Preferably, the potato seeds in the first step are potato blocks which are more than 3 months and less than 100g in weight after harvesting.
Preferably, in the step (1.2), the volume ratio of the garden soil to the vermiculite is 4:1, and the decomposed organic fertilizer is 10kg/m3, the ternary compound fertilizer is 600g/m3, and the urea is 200g/m 3.
Preferably, the total nutrient content of the ternary compound fertilizer in the step (1.2) is 47 percent.
Preferably, the thickness of the covering substrate after sowing in the second step is 7 cm.
Preferably, the application amount of the ammonium sulfate in the step (3.3) is 3.6g per plant, and the nutrient indexes of the calcium-magnesium-boron-zinc medium trace element foliar fertilizer are as follows: CaO is more than or equal to 15 percent, MgO is more than or equal to 6 percent, NO3N is more than or equal to 13 percent, Zn is more than or equal to 0.05 percent, B is more than or equal to 0.05 percent, Cl and S are not contained, the dosage is 1.5g/100 strains, and the solution which is 1000 times diluted is uniformly sprayed on the leaf surfaces.
Preferably, in the step (3.4), 1mL/100 strain of 32.5% difenoconazole-azoxystrobin suspending agent and 1.2g/100 strain of 80% mancozeb are sprayed for 1 time for 10 days to alternately prevent and treat the early blight and the anthracnose; 1.4g of 58% methyl cream-manganese zinc per 100 strains are usedAnd 72% cream urea, manganese zinc 1.2g/100 plants 10 days spray 1 time to use alternately and prevent the late blight; spraying 25% imidacloprid 0.7g/100 leaves and hanging yellow plates in the shed (yellow plate specification: 25 × 30 cm; hanging mode: 50cm above the ground and 100cm above the ground are according to 1 piece/m2Hanging yellow plates) for preventing and controlling insect pests such as aphids.
According to the technical scheme, compared with the prior art, the invention discloses and provides a hybrid seed production method for potatoes in autumn in the south of the Ji province, which has the following beneficial effects:
by utilizing the climate characteristics that the core region of Shijiazhuang in Jizhongnan region is higher in temperature at 8 months and suitable for the growth of potato stems and leaves, and the temperature at 9 months and 10 months is cool and suitable for the hybrid pollination and fruit setting of potatoes, the fast seedling emergence, uniform and strong seedlings after sowing are achieved by adopting the small potato blocks to accelerate the germination in 15-20 days at 7 months and the whole potato sowing mode, the potato seeds are hybridized and produced by utilizing the condition that the higher temperature is suitable for the growth of the potato stems and leaves at 8 months and the temperature is reduced at 9 months and 10 months to enable the potatoes to enter the flowering phase; the invention provides a hybrid seed production technology for potatoes in autumn in the Jizhongnan region by combining specific management measures such as moisture, temperature, fertilizer, plant protection and the like for the potato growth period and specific pollination means for the flowering period, solves the problems of seed production and low seed yield of hybrid seed production of potatoes in the Jizhongnan region, and solves the bottleneck problem of hybrid breeding of potatoes in the Jizhongnan region. By adopting the technology, the seed setting rate of the potato in the autumn in the south-middle area of the wing can reach 50 percent, is extremely low and generally less than 10 percent compared with the prior art, and is greatly improved. Provides a seed production technology for crossbreeding of potatoes in the south of Ji.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a hybrid seed production method of potatoes in autumn in the south of the Ji province of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood 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.
Example 1
The test was conducted in Zhao county test base at agriculture and forestry science research institute of Shijiazhuang city in 2021, 7 months 15 days-2021, 10 months 25 days.
The method comprises the following steps: preparation work before sowing
1.1 pregermination
The germination is carried out in 20 days after 6 months, and in order to sow the whole potatoes, seedlings emerge quickly after sowing, and are uniform and strong. The seed potato should be selected from potato blocks of more than 3 months and less than 100g after harvest. Accelerating germination is carried out in a dark room at the room temperature of 20-25 ℃. When the bud grows to 2-3cm, an LED lamp with the light intensity of 1500-2000LX is used for performing light exposure treatment, so that the bud enlargement and bud strengthening are facilitated.
1.2 preparation of the matrix
And 7, 10 days after 7 months, uniformly mixing the garden soil and the vermiculite according to the volume ratio of 4:1, and adding 10kg/m3 decomposed organic fertilizer, 600g/m3 ternary compound fertilizer (the total nutrient content is 47%) and 200g/m3 urea.
1.3 potting with substrate
And 7, 10-13 days after 7 months, filling the substrate prepared in the step two into a flowerpot (the specification of the flowerpot is that the caliber is 32cm, the height is 32cm, and the volume is 25L), wherein the filling amount is as follows: filling the substrate to a position 10cm away from the edge of the upper part of the flowerpot; after the substrate is filled, the substrate is leveled and a circular plastic plate with the diameter of 7cm and the thickness of 0.3mm is placed on the substrate.
1.4 flowerpot
And 7, 14 days after 7 months, the flowerpots filled with the matrix are placed in the greenhouse in a mode of large row spacing of 100cm, small row spacing of 52cm and plant spacing of 52 cm.
1.5 shed room requirements
The greenhouse parameter requirements are as follows: the width of the greenhouse is more than or equal to 7.5m, and the height of the greenhouse is more than or equal to 2.7 m; the side air inlet and the top air inlet are provided, the side air inlet is larger than or equal to 1.5m, the top air inlet is larger than or equal to 1.5m, and the top air inlet is positioned right above the greenhouse; the greenhouse is provided with a sunshade net, a greenhouse humidifier, a water and fertilizer integration device and a dropper device.
Step two: seeding
And (4) sowing for 15-20 days in 7 months, placing the seed potatoes accelerated to sprout in the step one on the circular plastic plate placed in the step three, covering the substrate with the thickness of 7cm, and watering thoroughly by using drip irrigation equipment.
Step three: management measures for growing period
3.1 moisture management
Watering once from sowing to 10 days before fruit harvest according to soil moisture content 3-5 days, keeping maximum water holding capacity of soil 60-70% before seedling aligning, keeping maximum water holding capacity of soil 70-80% after seedling aligning, and stopping watering 10 days before fruit harvest.
3.2 temperature management
And (3) ventilating and cooling in time when the temperature in the greenhouse is higher than 30 ℃, and cooling by using a sunshade net when necessary. The highest temperature in the shed is kept at 20-29 ℃ and the lowest temperature is not lower than 10 ℃.
3.3 fertilizing measures
After aligning seedlings, applying ammonium sulfate (the using amount is 3.6 g/pot) with water by using water and fertilizer integrated drip irrigation equipment; spraying medium trace element leaf fertilizer on leaf surfaces in the rooting stage.
3.4 plant protection measures
The difenoconazole and the mancozeb are used for preventing and treating early blight and anthracnose; cymoxanil and cymoxanil are used for preventing and treating late blight; imidacloprid and yellow plates hung in the greenhouse are used for preventing and controlling insect pests such as aphids.
Step four: pollination is carried out
4.1 flowering phase
Sowing the seeds in 7 months and 15-20 days, wherein the seedlings emerge in 1-10 days in 8 months generally, and the flowering period is 1 day in 9 months and 1 day in 10 months.
4.2 taking the powder
The powder taking time is 8:00-10:00 in the morning. Selecting buds which will not bloom (to prevent pollen from mixing). Taking off the buds, and taking out pollen for pollination with toothpick; or spreading the buds for cooling, collecting pollen in 10ml centrifugal tube, storing at 4 deg.C, and taking out at any time.
4.3 preparation before pollination
One day before pollination, selecting a robust inflorescence, removing all flowers and stamens in buds in the inflorescence, and covering a mesh bag to prevent pollen from mixing (the mesh bag is 60 meshes, the weight of each flower is less than or equal to 2g, and the length is multiplied by the width by 23 multiplied by 17 cm). Before pollination, the humidifier of the greenhouse is opened to ensure that the relative humidity in the greenhouse reaches 80 percent during pollination.
4.4 pollination
Pollination time was 6 a.m: 00-9:00, 4:00-6:00 in the afternoon. Uniformly smearing pollen on stigma to obtain a layer of pollen particles on stigma surface; each stigma was applied twice, once in the morning and once in the afternoon. After pollination, a mesh bag is timely sleeved to prevent fruit dropping after pollen stringing and fruit setting (the mesh bag specification is 60 meshes, the weight of each mesh bag is less than or equal to 2g, and the length multiplied by the width is 23 multiplied by 17cm), and a label is hung to record hybridization combination.
Step five: fruit setting and harvesting
And (4) observing the fruit setting situation after pollination for 15 days, if the fruit setting situation of pollination cannot reach the expected situation due to artificial factors such as improper operation and the like, and the time is not later than 10 months and 1 day, carrying out supplementary pollination according to the method in step four. Harvesting after pollination for 40 days, and after harvesting, the fruit is after-ripening. And (4) harvesting seeds after the fruits are ripened and softened, harvesting the seeds, fully drying, bagging, and marking and recording the hybridization combination, the number of the seeds and the time. Storing at-20 deg.C for use.
Comparative example
The hybrid seed production technology of the potatoes provided by the invention is adopted to compare with the conventional hybrid seed production method for the hybrid seed production. In the test base of Zhao county of agricultural and forestry science research institute in Shijiazhuang city, 6 hybridization combinations are selected according to two hybridization methods, each hybridization combination is pollinated to 30 flowers in each pair by adopting the two hybridization methods, the number of fructification is counted after harvesting, the number of seeds is obtained, and the fructification rate is calculated. The specific potato hybrid seed production methods have the following specific results in table 1:
TABLE 1 Effect of different hybridization method treatments on Potato hybrid seed set
As shown by the comparison of the tests, the average seed setting rate of 6 hybrid combinations is 51.5 percent by adopting the method for producing hybrid seeds of potatoes in autumn in the south of Ji; the average fruit set percentage in 6 hybridization combinations was 6.7% using conventional hybridization methods. The method for producing hybrid seeds of potatoes in autumn in the south of Ji improves the number of hybrid seeds and the seed setting rate.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
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 (7)
1. A hybrid seed production method for potatoes in autumn in the south of Jizhong is characterized by comprising the following steps:
the method comprises the following steps: preparation work before sowing
(1.1) pregermination: accelerating germination in a dark room at the room temperature of 20-25 ℃, and when the sprouts grow for 2-3cm, performing visible light treatment by using an LED lamp with the light intensity of 1500-2000LX to grow large sprouts and strong sprouts;
(1.2) preparing a matrix: uniformly mixing the garden soil and the vermiculite, and uniformly mixing the composted organic fertilizer, the ternary compound fertilizer and the urea;
(1.3) preparing a planting environment: placing a planting substrate in a ventilated greenhouse with a sunshade net and a humidifier;
step two: seeding
Sowing the seed potatoes whose buds are accelerated in the step one, and then watering thoroughly after 15-20 days in 7 months, wherein the sowing distance is 100cm large, the small row distance is 52cm, and the plant distance is 52 cm;
step three: management of growing period
(3.1) moisture management: watering once from 10 days before sowing to fruit harvesting to 3-5 days, keeping the maximum water holding capacity of the soil to be 60-70% before seedling aligning, keeping the maximum water holding capacity of the soil to be 70-80% after seedling aligning, and stopping watering 10 days before fruit harvesting;
(3.2) temperature management: the temperature in the greenhouse is kept between 10 and 29 ℃;
(3.3) fertilizing measures: after seedling is completed, ammonium sulfate is applied along with water, and calcium, magnesium, boron and zinc medium trace element leaf fertilizers are sprayed on leaf surfaces of the seedlings in a rooting period and a bud period respectively once;
(3.4) plant protection measures: the conventional medicine is used for preventing and treating plant diseases and insect pests;
step four: pollination is carried out
(4.1) taking powder: selecting the unetched buds to take out pollen and store the pollen at 4 ℃ for storage at 8:00-10:00 am in the flowering period of 1-10 months and 1-day 9;
(4.2) preparation before pollination: selecting robust inflorescences one day before pollination, removing flowers in the inflorescences and all stamens in buds, covering mesh bags after pollination to prevent pollen from mixing, and opening a greenhouse humidifier before pollination to adjust the relative humidity to 80%;
(4.3) pollination: uniformly coating pollen on stigma at 6:00-9:00 am and 4:00-6:00 pm, coating pollen on stigma twice, coating pollen once in the morning and once in the afternoon, covering mesh bags after pollination, and recording hybridization combination by hanging a label;
step five: fruit setting and harvesting
Harvesting after pollination for 40 days, harvesting seeds after the fruits are ripe and softened, fully drying, bagging, marking and recording the hybridization combination, the number of the seeds and the time, and storing at-20 ℃ for later use.
2. The method for hybrid seed production of potatoes in autumn in the south of the Hezhong as claimed in claim 1, wherein the potato seed in the first step is potato blocks with the weight of less than 100g and more than 3 months after harvest.
3. The hybrid seed production method for potatoes in autumn in the south of the Hezhong as claimed in claim 1, wherein in the step (1.2), the volume ratio of garden soil to vermiculite is 4:1, and 10kg/m of decomposed organic fertilizer is mixed in3600g/m ternary compound fertilizer3200g/m of urea3。
4. The method for hybrid seed production of potatoes in autumn in the south of the Hezhong as claimed in claim 1, wherein the total nutrient content of the ternary compound fertilizer in the step (1.2) is 47%.
5. The method for hybrid seed production of potatoes in autumn in the south of the Hezhong as claimed in claim 1, wherein the thickness of the covering substrate after sowing in the second step is 7 cm.
6. The hybrid seed production method for potatoes in autumn in the south of the Hezhong as claimed in claim 1, wherein the application amount of ammonium sulfate in step (3.3) is 3.6g per plant, and the nutrient indexes of the calcium-magnesium-boron-zinc medium trace element foliar fertilizer are as follows: CaO is more than or equal to 15 percent, MgO is more than or equal to 6 percent, NO3N is more than or equal to 13 percent, Zn is more than or equal to 0.05 percent, B is more than or equal to 0.05 percent, Cl and S are not contained, the dosage is 1.5g/100 strains, and the solution which is 1000 times diluted is uniformly sprayed on the leaf surfaces.
7. The method for hybrid seed production of potatoes in autumn in the south of the Hezhong as claimed in claim 1, wherein in the step (3.4), 1mL/100 strain of 32.5% difenoconazole-azoxystrobin suspending agent and 1.2g/100 strain of 80% mancozeb are sprayed for 10 days for 1 time to alternately prevent and treat the early blight and the anthracnose; 1, spraying 1 time of 58 percent of methylzinc-manganese-zinc 1.4g/100 strains and 72 percent of urea-manganese-zinc 1.2g/100 strains for 10 days to alternately prevent and treat late blight; the insect pests such as aphids and the like are prevented and controlled by spraying 25% imidacloprid 0.7g/100 plants on leaf surfaces and hanging yellow plates in a shed.
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| CN116472953A (en) * | 2023-04-28 | 2023-07-25 | 石家庄市农林科学研究院 | Potato crossbreeding method and device |
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| CN116472953A (en) * | 2023-04-28 | 2023-07-25 | 石家庄市农林科学研究院 | Potato crossbreeding method and device |
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