CN116784185A - Method for improving cold resistance of hybrid pennisetum - Google Patents
Method for improving cold resistance of hybrid pennisetum Download PDFInfo
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- 241000209046 Pennisetum Species 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims abstract description 34
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- 239000004576 sand Substances 0.000 claims description 24
- 239000002689 soil Substances 0.000 claims description 18
- 238000011084 recovery Methods 0.000 claims description 8
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- ONIBWKKTOPOVIA-BYPYZUCNSA-N L-Proline Chemical compound OC(=O)[C@@H]1CCCN1 ONIBWKKTOPOVIA-BYPYZUCNSA-N 0.000 description 1
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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
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
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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
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0262—Mulches, i.e. covering material not-pre-formed in mats or sheets
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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
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
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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
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
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Abstract
The invention relates to the technical field of pennisetum domestication, in particular to a method for improving cold resistance of hybrid pennisetum. The invention takes the hybrid pennisetum in the seedling stage and the full growth stage as a research object, and gradually improves the cold resistance of the hybrid pennisetum by combining manual control low-temperature domestication and field overwintering domestication. Greatly improves the overwintering rate of the hybrid pennisetum in the north.
Description
Technical Field
The invention relates to the technical field of pennisetum domestication, in particular to a method for improving cold resistance of hybrid pennisetum.
Background
The hybrid pennisetum is perennial gramineous pasture, and is produced in africa and is distributed in tropical or subtropical areas. The hybrid pennisetum has the advantages of rapid growth, high plant height, more leaves, strong tillering capability, better regenerability, high biomass yield and excellent quality, and is widely researched, popularized and applied as a high-yield and high-quality pasture at present. However, the hybrid pennisetum has the disadvantages of warm and moist climate conditions, low-temperature frost resistance and natural overwintering in the north of Yangtze river, which becomes an important bottleneck for preventing the wide application of the hybrid pennisetum. In the prior art, no related report for improving the cold resistance of the hybrid pennisetum has been found. In other plants, the cold resistance of the plants is improved by transferring the cold resistance genes through biotechnology such as transgenosis, gene editing and the like, or the cold resistance of the plants is enhanced by spraying hormone medicaments and nutrient medicaments, or the cold resistance of the plants is improved by adopting cultivation management measures, and technical reports for improving the cold resistance of seeds by combining microwave treatment with low-temperature domestication are also available. On the one hand, the methods have the defects of higher cost, difficult breakthrough of technical bottlenecks or easy dispersion and loss of cold resistance and the like, and on the other hand, the technical methods have stronger pertinence and are difficult to be directly applied to other plants.
The low temperature stress is an abiotic stress to which plants are often subjected, and after the plants are subjected to the low temperature stress, various organs of the plants are damaged to different degrees, cell membranes are broken and oxidized to generate a large amount of malondialdehyde, so that the content of the substance is increased sharply. Plants themselves will also reduce the adverse effects of low temperature stress on plants by increasing the levels of major osmoregulating substances, such as soluble sugars and proline, and some antioxidant enzyme activities, such as superoxide dismutase and peroxidase activities.
Disclosure of Invention
The invention provides a method for improving cold resistance of hybrid pennisetum, which takes the hybrid pennisetum in the seedling stage and the whole growth stage as a research object, adopts manual control of low-temperature continuous intermittent domestication and overwintering domestication in a field low-cost management mode, thereby improving the cold resistance of the hybrid pennisetum year by year, finally obtaining a hybrid pennisetum plant with high cold resistance, and can withstand the low-temperature condition of more than 60 days and minus 1 ℃.
The invention provides a method for improving cold resistance of hybrid pennisetum, which comprises first-stage domestication and second-stage domestication;
performing first-stage domestication on hybrid pennisetum seedlings, wherein the first-stage domestication is divided into different domestication periods according to time sequence, and low-temperature domestication is performed at each domestication period first and then growth is recovered;
the acclimation temperature of the later acclimation period is lower than that of the former acclimation period, the stress duration is longer than that of the former acclimation period, the recovery duration is shorter than that of the later acclimation period, and the stress times are more than that of the former acclimation period;
the seedlings subjected to the first-stage domestication are moved to the field, and the second-stage domestication is performed;
the second stage of domestication is divided into different growth periods according to time sequence, and the hybrid pennisetum plants with better overwintering and turning green are selected for the next growth period of domestication;
when the pennisetum is overwintered, the covering is covered, and the thickness of the covering in the later period of birth is lower than that in the former period of birth.
Preferably, the method comprises the steps of: cold-resistant domestication is carried out on the hybrid pennisetum in different time phases; the temperature of low-temperature domestication is controlled to be gradually reduced to-1 ℃, the thickness of field overwintering domestication earthing is gradually reduced to 20-30cm, or the thickness of litters covering is reduced to 35-45cm, and the treatment temperature of the temperature suffered by pennisetum in the later domestication time stage is lower than that of the temperature suffered by pennisetum in the former time domestication stage. The cold resistance of the hybrid pennisetum is improved by manually controlling the low temperature to domesticate the hybrid pennisetum in the seedling stage and combining field planting of the hybrid pennisetum and adopting a low-cost overwintering maintenance measure to perform field overwintering domestication.
Preferably, the first acclimation culture stage is performed in a low temperature light incubator, greenhouse or shed.
According to the method for improving the cold resistance of hybrid pennisetum, the first stage of domestication sequentially comprises a 1 st domestication period, a 2 nd domestication period and a 3 rd domestication period;
stage 1 acclimatization: the domestication temperature is 2-4 ℃, the duration of each stress is 10-20 days, the growth recovery duration between stresses is 12-18 days, and the total stress is 3-5 times;
stage 2 acclimatization: the stress domestication temperature is 0-2 ℃, the duration of each stress is 15-25 days, the growth recovery duration is 7-13 days, and the total stress is 5-7 times;
stage 3 acclimatization: the stress domestication temperature is-2-0deg.C, the duration of each stress is 25-35 days, the growth is recovered for 2-8 days, and the stress is carried out for 7-9 times.
According to the method for improving the cold resistance of hybrid pennisetum, after seedlings are moved to the field, the seedlings are covered with a covering which can increase the day and night temperature difference of the soil.
Preferably, the covering is one or more of cobble, gravel sand and sand.
Preferably, sand-covering treatment is carried out on the periphery of the hybrid pennisetum plant. The sand or the material with similar specific heat capacity, such as cobblestone, gravel sand, fine cotton sand and the like, has the effect of increasing the day-night temperature difference of the soil after being covered on the surface layer of the soil, is beneficial to the accumulation of soluble sugar of the photosynthetic assimilation product of the hybrid pennisetum in the rhizome, and has an important role in improving the cold resistance of plants when being used as an important penetration regulating substance for resisting low-temperature stress of the plants.
Preferably, the sand cover radius is 30-50cm, more preferably 35-45cm.
Preferably, the thickness of the sand cover is 8-30cm, more preferably 10-20cm.
The technical principle of the sand-covering treatment of the periphery of the hybrid pennisetum plant adopted by the invention is that the day-night temperature difference of the soil temperature is increased, which is favorable for accumulating photosynthetic assimilates such as soluble sugar in the rhizome of the hybrid pennisetum plant, thereby achieving stronger tolerance to low temperature stress.
Further preferably, the cover is one or more of fine cotton sand, river sand, sea sand, mountain sand and desert sand.
Preferably, a sand-coated treatment is used in combination throughout the second acclimation stage.
The artificial control low temperature domestication is carried out on the hybrid pennisetum in the seedling stage, the sand covering treatment is combined after the field planting, and the natural overwintering domestication is carried out under the simple overwintering maintenance measures. The domestication temperature of the pennisetum in the seedling stage is lower in the post-domestication stage than that of the pennisetum in the prior domestication stage, and the field overwintering management and protection measures have poorer heat preservation effect. Can improve the cold resistance of the hybrid pennisetum.
According to the method for improving the cold resistance of the hybrid pennisetum, the second stage domestication sequentially comprises a 1 st growth period, a 2 nd growth period and a 3 rd growth period.
Preferably, a growth period has a duration of 1 year.
According to the method for improving the cold resistance of the hybrid pennisetum, after the domestication of each growing period is completed, the hybrid pennisetum plants with good overwintering and turning green are selected, and the domestication is continued until the target plants are selected.
According to the method for improving the cold resistance of the hybrid pennisetum, the temperature of the second stage domestication is controlled to be more than-4 ℃.
According to the method for improving the cold resistance of the hybrid pennisetum, in the second stage of domestication, the covering is one or more of soil, a fallen object and an artificial heat-insulating material.
Preferably, the artificial heat insulation material is one or more of heat insulation quilt and ground cloth.
According to the method for improving the cold resistance of the hybrid pennisetum, in the second stage of domestication, the covering is soil.
Preferably, the first year of the covering soil has a thickness of 35-45cm, and then decreases year by year until year 3 is 20-30cm.
Or, the cover is in the form of an apoptosis.
The thickness of the first year of the withered object is 55-65cm, and gradually decreases to 25-35cm of the 3 rd year.
According to the method for improving the cold resistance of hybrid pennisetum, when the pennisetum in the seedling stage is domesticated at low temperature under manual control, the domestication temperature is gradually reduced in the 1 st, 2 nd and 3 rd growth stages, the field overwintering management and protection effect is gradually weakened, and the coverage thickness of a covering (loam or a fallen object) is gradually reduced. Meanwhile, in the field planting links of 3 growth periods, the sand covering treatment of the loam surface is combined.
According to the method for improving the cold resistance of the hybrid pennisetum, the 1 st growth period is as follows: controlling the ambient temperature of the pennisetum at-2-0 ℃ at night in the overwintering period;
growth period 2: controlling the ambient temperature of the pennisetum at-3-0 ℃ at night in the overwintering period;
growth period 3: the ambient temperature of the pennisetum is controlled to be-3-0 ℃ at night in the overwintering period.
Preferably, in the second domestication stage, the daytime temperature is controlled to be higher than 2 ℃, preferably higher than 6 ℃ in the overwintering period.
According to the method for improving the cold resistance of the hybrid pennisetum, in the second domestication stage, the hybrid pennisetum is domesticated in the arch shed.
Preferably, the canopy is windowed after the 1 st growth period.
According to the method for improving the cold resistance of the hybrid pennisetum, the pennisetum domesticated in the second domestication stage is transplanted, and the first overwintering period after the transplanting is covered with 15-25cm of soil or 20-30cm of litters.
The invention has the beneficial effects that:
the invention does not adopt any high-cost treatment modes such as biotechnology, medicament spraying treatment, sonic treatment, equipment auxiliary treatment and the like, and adopts a low-cost management and protection mode to gradually improve the cold resistance of the hybrid pennisetum.
The technical principle of the invention is stress memory of plants, when the hybrid pennisetum is repeatedly subjected to low temperature stress for a plurality of times within a certain period, the plants can generate a memory response to the low temperature stress, osmotic adjusting substances such as soluble sugar, soluble protein and proline in the plants can respond more quickly and accumulate more, and enzyme activities such as superoxide dismutase and peroxidase can also be rapidly improved. The method can enable the hybrid pennisetum to generate stronger cold resistance, and can resist low-temperature stress in the whole winter under the simple overwintering management and protection measures in northern areas.
The technical scheme adopted by the invention is simple and convenient to operate, low in cost and obvious in effect, the hybrid pennisetum material with obviously improved cold resistance can be selected from the hybrid pennisetum material, and the hybrid pennisetum material can safely overwinter under the treatment of low-cost overwintering maintenance measures in northern areas of China.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or of the prior art, the following description will make a brief introduction to the drawings used in the description of the embodiments or of the prior art, from which other drawings can be obtained.
FIG. 1 is a schematic flow chart of screening hybrid pennisetum plants with high cold resistance.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention takes the hybrid pennisetum in the seedling stage and the hybrid pennisetum planted in the field as research objects, firstly adopts manual control to carry out continuous intermittent domestication at low temperature, the low temperature domestication temperature in the 1 st domestication stage is 3 ℃, and gradually decreases to-1 ℃ in the 3 rd year. Transplanting domesticated acrobatic pennisetum seedlings to a field, performing sand coating treatment (with the radius of about 40cm and the thickness of about 15 cm) on the periphery of the hybrid pennisetum plants, harvesting overground biomass at the end of a growing season, performing simple overwintering maintenance and management on the hybrid pennisetum by adopting a simple earthing or withered object covering mode, wherein the thickness of the earthing is about 40cm in the first year, gradually decreasing until the year 3 is 25cm, gradually decreasing the withered object from the first 60cm to the first 30cm in the year 3, performing overwintering rate statistics and investigation in the beginning of each year, screening the hybrid pennisetum plants with better overwintering and turning green from the hybrid pennisetum plants, then continuously planting and domesticating, and finally screening the hybrid pennisetum plants with stronger cold resistance. The specific flow can be seen in fig. 1.
Example 1
Is implemented in Wuqiang county in Hebei Heshui province. The altitude of the test site is 65m, and the longitude and latitude are 115 degrees 34'E and 37 degrees 49' N.
Firstly, putting the 5-leaf hybrid pennisetum alopecuroides into a low-temperature illumination incubator for continuous intermittent low-temperature domestication, wherein the light intensity of the illumination incubator is 35000lux, the illumination (D) time is 10 hours, the non-illumination (N) time is 14 hours, and the humidity is 50%.
The manual control low-temperature domestication scheme is as follows:
stage 1 acclimatization: the stress domestication temperature is 3 ℃, the duration of each stress is 15 days, the duration of growth recovery between stresses is 15 days, and the total stress is 4 times;
stage 2 acclimatization: the stress domestication temperature is 1 ℃, the duration of each stress is 20 days, the growth recovery duration is 10 days, and the total stress is 6 times;
stage 3 acclimatization: the stress domestication temperature is-1 ℃, the duration of each stress is 30 days, the growth is recovered for 5 days, and the total stress is 8 times;
and then transplanting the hybrid pennisetum seedlings to the field. Covering river sand with the thickness of about 15cm and the radius of about 40cm around the hybrid pennisetum plant, pouring sufficient Anjia water after the hybrid pennisetum plant is transplanted, and then, not carrying out artificial irrigation and fertilization, and weeding at proper time. When the pennisetum alopecuroides grows to the end of the growing season, the biomass on the overground part of the pennisetum alopecuroides is mowed, and the stubble remaining height is about 10cm. Then, domesticating under the simple field overwintering maintenance condition, wherein the specific domestication scheme is as follows:
growth period 1: the simple greenhouse is maintained and managed in winter, and soil is covered at the stubble-remained position of the hybrid pennisetum in winter for 40cm. By the next spring, the hybrid pennisetum plants which can normally overwinter and turn green are selected, then the hybrid pennisetum seedlings are obtained through a rhizome breeding mode, and the artificial control low-temperature domestication is continued.
Growth period 2: the simple greenhouse overwintering maintenance management is carried out, the greenhouse does not carry out any heat preservation treatment, and ventilation windows such as greenhouse windows are all opened. And covering the stubble-remained position of the hybrid pennisetum with soil for 30cm in winter. By the next spring, the hybrid pennisetum plants which can normally overwinter and turn green are selected, then the hybrid pennisetum seedlings are obtained through a rhizome breeding mode, and the artificial control low-temperature domestication is continued.
Growth period 3: the simple greenhouse overwintering maintenance management is carried out, the greenhouse does not carry out any heat preservation treatment, and ventilation windows such as greenhouse windows are all opened. And covering the stubble-remained position of the hybrid pennisetum with soil for 25cm in winter. And selecting the hybrid pennisetum plants which can normally overwinter and turn green and grow well in spring of the next year, and obtaining the hybrid pennisetum plants with high cold resistance.
Under the simple overwintering maintenance measure, the domesticated hybrid pennisetum plants can reach the overwintering rate of more than 70% through earthing by 20cm.
Example 2
Implemented in the city of Wuhan, hubei province, jiang Xia Ou. The altitude of the test place is 112m, and the longitude and latitude are 30.15N and 114.30E.
The hybrid pennisetum plants domesticated in Wu Jiang county of Hebei province are planted in the field, the peace water is fully poured after planting, no artificial irrigation and fertilization are performed in the growth and development process, weeds are properly removed according to the condition, the biomass on the overground parts is mowed at the end of the growing season, and the stubble height is about 10cm. The overwintering maintenance management is not carried out in the area, and the natural condition overwintering is directly carried out. The next year statistical investigation shows that the overwintering rate of the hybrid pennisetum is 100%.
Example 3
The method is implemented at a test base of agricultural university in Huazhong mountain area of Wuhan, hubei province, and the longitude and latitude of the test base are 114 degrees 35'E,30 degrees 48' N, and the altitude is 54m.
The hybrid pennisetum plants domesticated in Wu Jiang county of Hebei province are planted in the field, the peace water is fully poured after planting, no artificial irrigation and fertilization are performed in the growth and development process, weeds are properly removed according to the condition, the biomass on the overground parts is mowed at the end of the growing season, and the stubble height is about 10cm. The overwintering maintenance management is not carried out in the area, and the natural condition overwintering is directly carried out. The next year statistical investigation shows that the overwintering rate of the hybrid pennisetum is 100%.
In the above 3 examples, the hybrid pennisetum plants without any domestication treatment were planted, and all other field maintenance measures were the same as those of the domesticated hybrid pennisetum plants. The result of the overwintering rate shows that the overwintering rate of the hybrid pennisetum domesticated in the Wuqiang county trial area in Hebei province reaches over 70 percent under the same condition, and the overwintering rate of the hybrid pennisetum without domestication is 0; the overwintering rate of the hybrid pennisetum after being domesticated in the experimental land of the river Xia Ou of the Wuhan city of Hubei province can reach 100%, and the overwintering rate of the hybrid pennisetum without being domesticated is only 34.26%; the overwintering rate of the hybrid pennisetum after domestication of the agricultural university test base in the mountain area of the flood mountain of the Wuhan province in Hubei province can reach 100%, and the overwintering rate of the hybrid pennisetum without domestication is only 36.78%.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for improving cold resistance of hybrid pennisetum is characterized by comprising first-stage domestication and second-stage domestication;
performing first-stage domestication on hybrid pennisetum seedlings, wherein the first-stage domestication is divided into different domestication periods according to time sequence, and low-temperature domestication is performed at each domestication period first and then growth is recovered;
the acclimation temperature of the later acclimation period is lower than that of the former acclimation period, the stress duration is longer than that of the former acclimation period, the recovery duration is shorter than that of the later acclimation period, and the stress times are more than that of the former acclimation period;
the seedlings subjected to the first-stage domestication are moved to the field, and the second-stage domestication is performed;
the second stage of domestication is divided into different growth periods according to time sequence, and the hybrid pennisetum plants with better overwintering and turning green are selected for the next growth period of domestication;
when the pennisetum is overwintered, the covering is covered, and the thickness of the covering in the later period of birth is lower than that in the former period of birth.
2. The method for improving cold resistance of hybrid pennisetum according to claim 1, wherein the first stage of domestication comprises a 1 st domestication period, a 2 nd domestication period and a 3 rd domestication period in sequence;
stage 1 acclimatization: the domestication temperature is 2-4 ℃, the duration of each stress is 10-20 days, the growth recovery duration between stresses is 12-18 days, and the total stress is 3-5 times;
stage 2 acclimatization: the stress domestication temperature is 0-2 ℃, the duration of each stress is 15-25 days, the growth recovery duration is 7-13 days, and the total stress is 5-7 times;
stage 3 acclimatization: the stress domestication temperature is-2-0deg.C, the duration of each stress is 25-35 days, the growth is recovered for 2-8 days, and the stress is carried out for 7-9 times.
3. The method for improving cold resistance of hybrid pennisetum according to claim 1 or 2, wherein after the seedlings are moved to the field, the seedlings are covered with a cover capable of increasing the day and night temperature difference of the soil;
preferably, the covering is one or more of cobble, gravel sand and sand;
further preferably, the cover is one or more of fine cotton sand, river sand, sea sand, mountain sand and desert sand;
preferably, the sand-coated radius is 30-50cm, more preferably 35-45cm;
preferably, the thickness of the sand cover is 8-30cm, more preferably 10-20cm.
4. A method for improving cold resistance of hybrid pennisetum according to any of claims 1-3, wherein the second stage domestication comprises in sequence a 1 st fertility period, a 2 nd fertility period and a 3 rd fertility period;
preferably, each growth period is 1 year.
5. The method for improving cold resistance of hybrid pennisetum according to any one of claims 1-4, wherein the temperature of the second stage domestication is controlled above-4 ℃.
6. The method for improving cold resistance of hybrid pennisetum according to any one of claims 1-5, wherein in the second stage of domestication, the cover is one or more of soil, a litter, and an artificial thermal insulation material;
preferably, the artificial heat insulation material is one or more of heat insulation quilt and ground cloth.
7. The method for improving cold resistance of hybrid pennisetum according to any one of claims 1-6, wherein in the second stage of domestication, the cover is soil;
preferably, the thickness of the covering soil in the first year is 35-45cm, and then the covering soil is gradually decreased year by year until the covering soil in the 3 rd year is 20-30cm;
or, the cover is in the form of an apoptosis;
the thickness of the first year of the withered object is 55-65cm, and gradually decreases to 25-35cm of the 3 rd year.
8. The method for improving cold resistance of hybrid pennisetum according to any one of claims 1-7, wherein the 1 st growth period: controlling the ambient temperature of the pennisetum at-2-0 ℃ at night in the overwintering period;
growth period 2: controlling the ambient temperature of the pennisetum at-3-0 ℃ at night in the overwintering period;
growth period 3: controlling the ambient temperature of the pennisetum at-3-0 ℃ at night in the overwintering period;
preferably, in the second domestication stage, the daytime temperature is controlled to be higher than 2 ℃, preferably higher than 6 ℃ in the overwintering period.
9. The method for improving cold resistance of hybrid pennisetum according to any one of claims 1-8, wherein in the second domestication stage, the hybrid pennisetum is domesticated in a canopy;
preferably, the window is opened after the 1 st growth period.
10. The method for improving cold resistance of hybrid pennisetum according to any one of claims 1-9, wherein pennisetum after the second domestication stage is transplanted, and the first overwintering stage after the transplanting is covered with 15-25cm soil or 20-30cm litters.
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| CN202410862408.3A CN118716130A (en) | 2023-06-30 | 2024-06-28 | Method for improving cold resistance of hybrid pennisetum |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117918196A (en) * | 2024-03-21 | 2024-04-26 | 云南省草地动物科学研究院 | Cold domestication cultivation method for cold-resistant new strain of elephant grass |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117918196A (en) * | 2024-03-21 | 2024-04-26 | 云南省草地动物科学研究院 | Cold domestication cultivation method for cold-resistant new strain of elephant grass |
| CN117918196B (en) * | 2024-03-21 | 2024-06-04 | 云南省草地动物科学研究院 | Cold domestication cultivation method for cold-resistant new strain of elephant grass |
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