CN113273419B - Method for preventing noble concubine mango flower from carrying leaves - Google Patents

Method for preventing noble concubine mango flower from carrying leaves Download PDF

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CN113273419B
CN113273419B CN202110037119.6A CN202110037119A CN113273419B CN 113273419 B CN113273419 B CN 113273419B CN 202110037119 A CN202110037119 A CN 202110037119A CN 113273419 B CN113273419 B CN 113273419B
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soil
spraying
regulator
inflorescences
percent
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CN113273419A (en
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牛迎凤
柳觐
刘紫艳
邓乐晔
毛常丽
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Yunnan Institute of Tropical Crops
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Yunnan Institute of Tropical Crops
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    • A—HUMAN NECESSITIES
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Abstract

The invention discloses a method for preventing the phenomenon of leaf banding of high-ranked imperial concubine miscanthus, which comprises the steps of conventionally pruning in middle and late ten days of 6 months, and applying a regulator I in an annular fertilization ditch to ensure that the water content of soil is kept at 75-85% of the maximum water holding capacity of the soil; spraying regulator II for the whole plant in middle and late 8 months, spraying for 1 time after 7-10 days, and spraying potash fertilizer pesticide for the 2 nd time to maintain the water content of the soil at 65-75% of the maximum water holding capacity of the soil; spraying a regulator III to inflorescences in the middle and upper 12 months to keep the water content of the soil at 50-65% of the maximum water holding capacity of the soil; and (3) spraying a regulator IV to inflorescences in the last ten days of 12 months to 1 month so as to keep the water content of the soil at 75-85% of the maximum water holding capacity of the soil. By adopting the method, the phenomenon of flower and leaf banding of the high-ranked imperial concubine mango can be effectively prevented, the number of inflorescences with the phenomenon of flower and leaf banding is controlled below 1% of the total number of inflorescences, the proportion of normal inflorescences reaches above 99%, and the normal growth and development of inflorescences and flowering fruit setting are ensured.

Description

Method for preventing noble concubine mango flower from carrying leaves
Technical Field
The invention relates to a method for preventing the phenomenon of flower and leaf banding of high-ranked imperial concubine, and belongs to the technical field of economic forest cultivation.
Background
Mango is an important tropical fruit tree, and has attractive appearance, gorgeous color and luster, high nutritional value of pulp, high vitamin A content up to 3.8%, and rich vitamin C content, and is superior to various common fruits such as oranges, strawberries and the like. In addition, mango fruits are rich in soluble sugar, protein and various amino acids necessary for human bodies, and mineral elements such as calcium, phosphorus, iron and the like are also rich. Research at home and abroad shows that eating mango can meet the taste requirement and is beneficial to human health.
The Xishuangbanna is located at the southwest border of China, has more typical tropical climate conditions, and is one of areas where mangoes are planted in a large scale in China. The high-ranked imperial concubine mango is a variety bred in Taiwan province in China, the fruits are oblong, the tops of the fruits are sharp and small, the weight of a single fruit is 300-500 g, the ripe high-ranked imperial concubine mango fruit is dark yellow in base color, bright red in cover color, bright in peel color, sweet and aromatic in pulp taste, and full in fruit juice content, and is deeply favored by consumers. Because of the excellent appearance and good quality of the Royal mango, the Royal mango is always one of the main cultivated varieties in the Xishuangbanna mango production area.
The phenomenon of the flower band leaves is a common phenomenon in the growth process of mangoes, and refers to the phenomenon that leaves are differentiated from the pedicel of an inflorescence in the growth and development processes of the mango inflorescence, and the leaves grow along with the inflorescence and cannot naturally fall off. After the phenomenon of flower and leaf carrying occurs, the development of mango inflorescences can be seriously affected, and along with the gradual growth of leaves on the flower stalks, small flowers on the inflorescences gradually fall off due to competition of nutrients with the leaves on the flower stalks, sunlight shielding caused by the leaves on the flower stalks and other reasons, so that the yield of an orchard is seriously affected.
Compared with other varieties, the flower and leaf phenomena of the high-ranked imperial concubine planted in the Xishuangbanna area are more prominent. At present, in a Xishuangbanna mango planting area, the phenomenon of flower and leaf of the high-ranked imperial concubine mango is treated by two methods. The first method is to manually remove the leaves growing on the pedicel to promote the flower belts She Huaxu to gradually grow and turn into normal inflorescences; the second method is to manually and thoroughly remove inflorescences with flower and leaf phenomena, and promote inflorescences to re-sprout and develop by utilizing the characteristic of strong regeneration capability of the inflorescences of the high-ranked imperial concubine. Both of these methods have significant drawbacks: the first method has good effect, but is very labor-consuming, especially, the inflorescence of the high-ranked imperial concubine is positioned at the top of the branch tip, the operation can be completed by means of a ladder, a bracket and the like, and for the orchard in which the high-ranked imperial concubine is planted in a large area, the operation is almost impossible to complete in a short period of time in the key period of inflorescence development; the second method also has a certain effect, but the inflorescences which are germinated again are not stronger than the inflorescences which are germinated again, and are limited by unique climatic conditions in Xishuangbanna areas, the whole fruit setting rate is often lower than that of inflorescences which are germinated for the first time because the air temperature is higher than that of the inflorescences which are germinated for the first time after the second inflorescences are germinated, the mature period of fruits produced by inflorescences which are germinated for the second time is often delayed for two weeks, and the price advantage of early-maturing mangoes is easily missed.
Therefore, for the flower and leaf banding phenomenon easily occurring in the planted high-ranked imperial concubine, no thoroughly effective solution is available at present, the best solution is to thoroughly prevent the occurrence of the phenomenon, but no relevant report or technical application for preventing the flower and leaf banding phenomenon of the high-ranked imperial concubine is available at present.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for preventing the phenomenon of banding of the flower of the high-ranked imperial concubine.
The invention is realized by the following technical scheme: a method for preventing the phenomenon of banding of the flower of the Chinese silvergrass of high-ranked imperial concubine comprises the following steps:
step (1), finishing routine pruning of the high-ranked imperial concubine in the middle and late 6 months of each year, digging an annular fertilization ditch under the drip line of the crown within 3-7 days after pruning, applying a regulator I in the annular fertilization ditch, and watering periodically to keep the water content of the soil at 75-85% of the maximum water holding capacity of the soil;
step (2), spraying regulator II 1.5-2.0L/plant for 1 time after 7-10 days when the new tree length of the tree to be pruned and germinated is 60-80 cm and the tree bark at the new tree base turns brown from green, spraying potash fertilizer pesticide on each plant on the ground surface in the drip line of the tree crown at the same time of 2 nd time, immediately spraying water to the ground surface to fully dissolve the potash fertilizer pesticide and then penetrating into the soil, and periodically watering to keep the water content of the soil at 65-75% of the maximum water holding capacity of the soil;
step (3), spraying a regulator III to the inflorescences when the inflorescences germinate to a length of 3-6 cm in the last 12 months of each year, avoiding spraying to leaves, branches and stems during spraying, and then regularly watering to keep the water content of the soil at 50-65% of the maximum water holding capacity of the soil;
and (4) spraying a regulator IV to the inflorescences when the inflorescences germinate to a length of more than or equal to 12cm in the last 12 to last 1 months of the year, avoiding spraying to leaves, branches and stems during spraying, and then regularly watering to keep the water content of the soil at 75-85% of the maximum water holding capacity of the soil.
The width of the annular fertilization ditch in the step (1) is 15-25 cm, and the depth is 25-35 cm.
The regulator I in the step (1) is prepared by mixing the following components in mass and is applied to each plant:
150-200 g of nitro water-soluble fertilizer, 1.5-2 kg of microorganism organic bacterial fertilizer and 7.5-10 kg of chitin seaweed refined potassium.
The regulator II in the step (2) is an aqueous solution containing the following active ingredient components:
0.06-0.10% of paclobutrazol and 0.15-0.20% of amino acid-containing water-soluble fertilizer.
The potassium fertilizer insecticide in the step (2) is prepared by mixing the following components in mass:
75-100 g of monopotassium phosphate and 10-15 g of dinotefuran.
The regulator III in the step (3) is an aqueous solution containing the following active ingredient components:
0.06-0.08% ethephon, 0.12-0.14% deep sea fish protein growth promoting essence, 0.0015-0.0025% amino oligose.
The regulator IV in the step (4) is an aqueous solution containing the following active ingredients:
1.5 to 2 percent of glucose, 0.5 to 0.75 percent of honey, 0.15 to 0.2 percent of penconazole and 0.07 to 0.12 percent of fluid boron.
The invention has the advantages and effects that: through the steps, the phenomenon of flower and leaf banding of the high-ranked imperial concubine can be effectively prevented, the number of inflorescences with the phenomenon of flower and leaf banding can be controlled below 1% of the total number of inflorescences, the proportion of normal inflorescences reaches above 99%, and the normal growth and development of inflorescences and flowering and fruit bearing are ensured.
Detailed Description
The method is particularly suitable for the emergence of the phenomenon of flower and leaf of the high-ranked imperial concubine mango planted in Xishuangbanna. The invention will be better understood from the following examples. It should be noted that variations and modifications can be made by those skilled in the art without departing from the principles of the present invention, which are also considered to be within the scope of the present invention.
Example 1
The method of the invention is used for preventing the inflorescence from generating the phenomenon of flower and leaf with the noble concubine mango planted in Xishuangbanna and with the age of 5 years. The method comprises the following steps:
step (1), finishing conventional pruning of the high-ranked imperial concubine mango in 6 months of 2019 and 15-18 days, digging an annular fertilization ditch with a width of 15cm and a depth of 35cm under the drip line of the crown within 7 days after pruning, and applying a regulator I in the annular fertilization ditch, wherein the regulator I is prepared by mixing the following components in mass, and the amount is used for each plant to apply: 150g of nitro water-soluble fertilizer, 1.5kg of microbial organic bacterial fertilizer and 7.5kg of chitin seaweed refined potassium; watering periodically to keep the water content of the soil at 75-85% of the maximum water holding capacity of the soil;
wherein, the commodity name of the nitro water-soluble fertilizer is Du high activity nitrogen potassium, the specification is 10kg per bag, and the ingredients are: total nitrogen is more than or equal to 25%, NO3-N is more than or equal to 5.9%, NH3-N is more than or equal to 1.6%, urea-N is more than or equal to 17.5%, P 2 O 5 ≥8%，K 2 O is more than or equal to 20 percent, B+Zn is more than or equal to 0.4 percent, and Cl is less than or equal to 0.1 percent; the commodity name of the microbial organic bacterial fertilizer is 'noble roots per kernel fruit', the specification is 0.25 kg/bag, the number of beneficial microbial viable bacteria is more than or equal to 2.0 hundred million/g, the organic matter is more than or equal to 60%, and the nitrogen, phosphorus and potassium are more than or equal to 5%; the product name of the chitin seaweed refined potassium is "green peptide kalman enzyme", and the specification is 20kg/barrel, the effective viable count is more than or equal to 5.0 hundred million/g;
and (2) spraying a regulator II which is an aqueous solution containing the following active ingredient components when the new tip length of the germinated tree barks after pruning is 60-80 cm and the color of the bark at the base of the new tip turns brown from green at the 8 months of 2019 for 18-21 days: 0.15% of an amino acid-containing water-soluble fertilizer and 0.06% of paclobutrazol; spraying 1 time after 10 days, spraying 2 times, simultaneously broadcasting a potassium fertilizer insecticide prepared by mixing 75g of monopotassium phosphate and 10g of dinotefuran on each plant on the ground surface in a tree crown drip line, immediately spraying water to the ground surface to enable the potassium fertilizer insecticide to be fully dissolved and then permeate into soil, and then regularly watering to enable the water content of the soil to be kept at 65-75% of the maximum water holding capacity of the soil;
wherein, the paclobutrazol is 15% wettable powder purchased in the market; the trade name of the water-soluble fertilizer containing amino acid is 'Zhengda Yishibang', the specification is 1.0 kg/bottle, the amino acid content is more than or equal to 110g/L, and the manganese+zinc content is more than or equal to 24g/L; mixing the two with water to achieve the required proportion of the regulator II;
the potassium dihydrogen phosphate is powder with the purity of 99 percent; the dinotefuran is a granule with 3% of active ingredient;
spraying a regulator III to the inflorescences when the inflorescences germinate to be 3-6 cm in length in the steps (3) and 5-12 days of 12 months in 2019, wherein the regulator III is an aqueous solution containing the following active ingredient components: 0.06% ethephon, 0.12% deep sea fish protein growth promoting essence and 0.0015% amino oligosaccharin; avoiding spraying to leaves, branches and stems during spraying, and regularly watering to keep the water content of soil at 50-65% of the maximum water holding capacity of the soil;
wherein, the ethephon is a conventional ethephon aqua with the purity of 40 percent; the free amino acid content of the commercial super-concentrated deep-sea fish protein growth promoting essence is more than or equal to 260 g/L; the commercial amino oligosaccharin is water aqua with the active ingredient content of 5%; mixing the three materials with water to achieve the required proportion of the regulator III;
spraying a regulator IV to the inflorescences when the inflorescences germinate to a length of more than or equal to 12cm from 26 days of 12 months of 2019 to 3 days of 1 month of 2020, wherein the regulator IV is an aqueous solution containing the following active components: 1.5% glucose, 0.5% honey, 0.15% penconazole and 0.1% fluid boron; avoiding spraying to leaves, branches and stems during spraying, and regularly watering to keep the water content of soil at 75-85% of the maximum water holding capacity of the soil;
wherein, glucose is conventional glucose powder with purity of 100%; the honey is commercially available conventional honey; the penconazole is a suspending agent with the total active ingredient content of 30 percent, wherein the tebuconazole content is 8 percent, and the carbendazim content is 22 percent; the fluid boron is water aqua with B more than or equal to 150 g/L; mixing the four materials with water to achieve the ratio required by the regulator IV.
Through the steps, the phenomenon of flower banding and leaf emergence of the Royal in Xishuangbanna is effectively prevented, the number of inflorescences with flower banding and leaf emergence of each plant is only 0.67% of the total number of inflorescences on average, and the proportion of normal inflorescences reaches 99.33%, so that the normal growth and development of inflorescences and flowering and fruit bearing are ensured.
Example 2
The method of the invention is used for preventing the inflorescence from generating the phenomenon of flower and leaf with the noble concubine mango planted in Xishuangbanna and with the age of 8 years. The method comprises the following steps:
step (1), finishing conventional pruning of the high-ranked imperial concubine mango in 6 months and 12-14 days in 2019, digging an annular fertilization ditch with the width of 25cm and the depth of 35cm under the drip line of the crown within 4 days after pruning, and applying a regulator I in the annular fertilization ditch, wherein the regulator I is prepared by mixing the following components in mass, and the amount is used for each plant to apply: 180g of nitro water-soluble fertilizer, 1.8kg of microbial organic bacterial fertilizer and 8.5kg of chitin seaweed refined potassium; watering periodically to keep the water content of the soil at 75-85% of the maximum water holding capacity of the soil;
wherein, the commodity name of the nitro water-soluble fertilizer is Du high activity nitrogen potassium, the specification is 10kg per bag, and the ingredients are: total nitrogen is more than or equal to 25%, NO3-N is more than or equal to 5.9%, NH3-N is more than or equal to 1.6%, urea-N is more than or equal to 17.5%, P 2 O 5 ≥8%，K 2 O is more than or equal to 20 percent, B+Zn is more than or equal to 0.4 percent, and Cl is less than or equal to 0.1 percent; the commodity name of the microbial organic bacterial fertilizer is 'noble roots per kernel fruit', the specification is 0.25 kg/bag, the number of beneficial microbial viable bacteria is more than or equal to 2.0 hundred million/g, the organic matter is more than or equal to 60%, and the nitrogen, phosphorus and potassium are more than or equal to 5%; the product name of the chitin seaweed refined potassium is "green peptide Er carbon enzyme", the specification is 20 kg/barrel, and the effective viable count is more than or equal to 5.0 hundred million/g;
and (2) spraying 1.8L/plant regulator II which is an aqueous solution containing the following active ingredients by using a large sprayer when the new bark with a new tip length of 60-80 cm and a new tip basal part after pruning and a new bark with a bark color of green to brown are adopted in the steps (2) and 2019, 8 months and 16-17 days: 0.18% of an amino acid-containing water-soluble fertilizer and 0.08% of paclobutrazol; spraying for 1 time after 8 days, spraying for 2 times, simultaneously broadcasting potassium fertilizer insecticide prepared by mixing 80g of monopotassium phosphate and 12g of dinotefuran on each plant on the ground surface in a tree crown drip line, immediately spraying water to the ground surface to enable the potassium fertilizer insecticide to be fully dissolved and then permeate into soil, and then regularly watering to enable the water content of the soil to be kept at 65-75% of the maximum water holding capacity of the soil;
wherein, the paclobutrazol is 15% wettable powder purchased in the market; the trade name of the water-soluble fertilizer containing amino acid is 'Zhengda Yishibang', the specification is 1.0 kg/bottle, the amino acid content is more than or equal to 110g/L, and the manganese+zinc content is more than or equal to 24g/L; mixing the two with water to achieve the required proportion of the regulator II;
the potassium dihydrogen phosphate is powder with the purity of 99 percent; the dinotefuran is a granule with 3% of active ingredient;
step (3), 12 months of 2019 and 3-10 days, when the inflorescences germinate to be 3-6 cm in length, spraying a regulator III to the inflorescences by adopting a backpack type electric sprayer additionally provided with an extension rod and a spray head protective cover, wherein the regulator III is an aqueous solution containing the following active ingredient components: 0.07% ethephon, 0.13% deep sea fish protein growth promoting essence and 0.002% amino-oligose; avoiding spraying to leaves, branches and stems during spraying, and regularly watering to keep the water content of soil at 50-65% of the maximum water holding capacity of the soil;
wherein, the ethephon is a conventional ethephon aqua with the purity of 40 percent; the free amino acid content of the commercial super-concentrated deep-sea fish protein growth promoting essence is more than or equal to 260 g/L; the commercial amino oligosaccharin is water aqua with the active ingredient content of 5%; mixing the three materials with water to achieve the required proportion of the regulator III;
step (4), 22 days of 12 months in 2019 to 1 day of 1 month in 2020, and when the inflorescence germinates to a length of more than or equal to 12cm, spraying a regulator IV to the inflorescence by adopting a backpack type electric sprayer with an extension rod and a spray head protection cover, wherein the regulator IV is an aqueous solution containing the following active components: 1.8% glucose, 0.65% honey, 0.18% penconazole and 0.07% fluid boron; avoiding spraying to leaves, branches and stems during spraying, and regularly watering to keep the water content of soil at 75-85% of the maximum water holding capacity of the soil;
wherein, glucose is conventional glucose powder with purity of 100%; the honey is commercially available conventional honey; the penconazole is a suspending agent with the total active ingredient content of 30 percent, wherein the tebuconazole content is 8 percent, and the carbendazim content is 22 percent; the fluid boron is water aqua with B more than or equal to 150 g/L; mixing the four materials with water to achieve the ratio required by the regulator IV.
Through the steps, the phenomenon of flower banding and leaf banding of the Royal in Xishuangbanna is effectively prevented, the number of inflorescences with flower banding and leaf banding phenomenon of each plant is only 0.75% of the total number of inflorescences on average, the proportion of normal inflorescences reaches 99.25%, and the normal growth and development of inflorescences and flowering and fruit bearing are ensured.
Example 3
The method of the invention is used for preventing the inflorescence from generating the phenomenon of flower and leaf with the noble concubine mango planted in Xishuangbanna and with the age of 12 years. The method comprises the following steps:
step (1), finishing conventional trimming of the high-ranked imperial concubine mango in 6 months of 2019 and 19-21 days, digging an annular fertilization ditch with the width of 20cm and the depth of 30cm under the drip line of the crown within 3 days after trimming, and applying a regulator I in the annular fertilization ditch, wherein the regulator I is prepared by mixing the following components in mass, and the amount is used for each plant to apply: 200g of nitro water-soluble fertilizer, 2kg of microbial organic bacterial fertilizer and 10kg of chitin seaweed refined potassium; watering periodically to keep the water content of the soil at 75-85% of the maximum water holding capacity of the soil;
wherein, the commodity name of the nitro water-soluble fertilizer is Du high activity nitrogen potassium, the specification is 10kg per bag, and the ingredients are: total nitrogen is more than or equal to 25%, NO3-N is more than or equal to 5.9%, NH3-N is more than or equal to 1.6%, urea-N is more than or equal to 17.5%, P 2 O 5 ≥8%，K 2 O is more than or equal to 20 percent, B+Zn is more than or equal to 0.4 percent, and Cl is less than or equal to 0.1 percent; the commodity name of the microbial organic bacterial fertilizer is 'noble roots per kernel fruit', the specification is 0.25 kg/bag, the number of beneficial microbial viable bacteria is more than or equal to 2.0 hundred million/g, the organic matter is more than or equal to 60%, and the nitrogen, phosphorus and potassium are more than or equal to 5%; the product name of the chitin seaweed refined potassium is "green peptide Er carbon enzyme", the specification is 20 kg/barrel, and the effective living bacteria areThe number is more than or equal to 5.0 hundred million/g;
step (2), 8 months in 2019 and 22-24 days, when the new tree barks with the length of 60-80 cm and the color of the new tree barks with the base part changed from green to brown after pruning, spraying 2.0L/plant of regulator II which is an aqueous solution containing the following active ingredients: 0.20% of an amino acid-containing water-soluble fertilizer and 0.10% of paclobutrazol; spraying for 1 time after 7 days, and simultaneously spraying for 2 times, broadcasting a potassium fertilizer insecticide prepared by mixing 100g of monopotassium phosphate and 15g of dinotefuran on each plant on the ground surface in a tree crown drip line, immediately spraying water to the ground surface to enable the potassium fertilizer insecticide to be fully dissolved and then permeate into soil, and then regularly watering to enable the water content of the soil to be kept at 65-75% of the maximum water holding capacity of the soil;
wherein, the paclobutrazol is 15% wettable powder purchased in the market; the trade name of the water-soluble fertilizer containing amino acid is 'Zhengda Yishibang', the specification is 1.0 kg/bottle, the amino acid content is more than or equal to 110g/L, and the manganese+zinc content is more than or equal to 24g/L; mixing the two with water to achieve the required proportion of the regulator II;
the potassium dihydrogen phosphate is powder with the purity of 99 percent; the dinotefuran is a granule with 3% of active ingredient;
step (3), 12 months of 2019 and 8-16 days, when the inflorescences germinate to be 3-6 cm in length, spraying a regulator III to the inflorescences by adopting a backpack type electric sprayer additionally provided with an extension rod and a spray head protective cover, wherein the regulator III is an aqueous solution containing the following active ingredient components: 0.08% ethephon, 0.14% deep sea fish protein growth promoting essence and 0.0025% amino oligosaccharin; avoiding spraying to leaves, branches and stems during spraying, and regularly watering to keep the water content of soil at 50-65% of the maximum water holding capacity of the soil;
wherein, the ethephon is a conventional ethephon aqua with the purity of 40 percent; the free amino acid content of the commercial super-concentrated deep-sea fish protein growth promoting essence is more than or equal to 260 g/L; the commercial amino oligosaccharin is water aqua with the active ingredient content of 5%; mixing the three materials with water to achieve the required proportion of the regulator III;
step (4), 29 days of 12 months in 2019 to 5 days of 1 month in 2020, and spraying a regulator IV to the inflorescences by adopting a knapsack electric sprayer additionally provided with an extension rod and a spray head protective cover when the inflorescences germinate to a length of more than or equal to 12cm, wherein the regulator IV is an aqueous solution containing the following active ingredient components: 2% glucose, 0.75% honey, 0.2% penconazole and 0.12% fluid boron; avoiding spraying to leaves, branches and stems during spraying, and regularly watering to keep the water content of soil at 75-85% of the maximum water holding capacity of the soil;
wherein, glucose is conventional glucose powder with purity of 100%; the honey is commercially available conventional honey; the penconazole is a suspending agent with the total active ingredient content of 30 percent, wherein the tebuconazole content is 8 percent, and the carbendazim content is 22 percent; the fluid boron is water aqua with B more than or equal to 150 g/L; mixing the four materials with water to achieve the ratio required by the regulator IV.
Through the steps, the phenomenon of flower banding and leaf formation of the Royal in Xishuangbanna is effectively prevented, the number of inflorescences with flower banding and leaf formation of each plant is only 0.50% of the total number of inflorescences, and the proportion of normal inflorescences reaches 99.50%, so that the normal growth and development of inflorescences and flowering and fruit setting are ensured.
Comparative example 1: as in example 3, only the restrictions of step (1), step (2), step (3) and step (4) on the specific operation time are canceled.
Comparative example 2: as in example 3, only specific restrictions on the water content of the soil by step (1), step (2), step (3) and step (4) are canceled.
Comparative example 3: as in example 3, only the "digging an annular fertilization trench with a width of 20cm and a depth of 30cm under the water drop line of the crown in 3 days after trimming" in the step (1) was omitted, and the regulator I was applied in the annular fertilization trench, which was prepared by mixing the following components by mass, the amounts being used for each plant: 200g of nitro water-soluble fertilizer, 2kg of microbial organic bacterial fertilizer and 10kg of chitin seaweed refined potassium.
Comparative example 4: as in example 3, the "spraying of the entire plant with a large-sized atomizer with the regulator II 2.0L/plant" in the step (2) was omitted, and the regulator II was an aqueous solution containing the following active ingredient components: 0.20% of an amino acid-containing water-soluble fertilizer and 0.10% of paclobutrazol; and spraying for 1 time after 7 days.
Comparative example 5: as in example 3, only "spraying regulator iii to inflorescences" in step (3), regulator iii being an aqueous solution containing the following active ingredients: operation of 0.08% ethephon, 0.14% deep sea fish protein growth promoting essence, 0.0025% amino oligosaccharin ".
Comparative example 6: as in example 3, the "spraying regulator IV to inflorescences" of step (4) was omitted, and regulator IV was an aqueous solution containing the following active ingredients: 2% glucose, 0.75% honey, 0.2% penconazole, 0.12% fluid boron.
The effect of preventing the banding phenomenon of the inflorescence of the high-ranked imperial concubine mango flowers of example 3 and comparative examples 1 to 6 was compared as follows:
Figure DEST_PATH_IMAGE002
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Claims (2)

1. a method for preventing the phenomenon of banding of the flower of the Chinese silvergrass of high-ranked imperial concubine is characterized by comprising the following steps:
step (1), finishing routine pruning of the high-ranked imperial concubine in the middle and late 6 months of each year, digging an annular fertilization ditch under the drip line of the crown within 3-7 days after pruning, applying a regulator I in the annular fertilization ditch, and watering periodically to keep the water content of the soil at 75-85% of the maximum water holding capacity of the soil;
the regulator I is prepared by mixing the following components in mass and is applied to each plant: 150 to 200 percent g percent of nitro water-soluble fertilizer, 1.5 to 2 percent kg percent of microbial organic bacterial fertilizer and 7.5 to 10 percent kg percent of chitin seaweed refined potassium;
step (2), spraying regulator II 1.5-2.0L/plant for 1 time after 7-10 days, spraying potash fertilizer pesticide on each plant on the ground surface in the crown drip line for 2 times when the new tree length of the tree to be trimmed is 60-80 cm and the color of the tree bark at the new tree base is changed from green to brown, immediately spraying water to the ground surface to fully dissolve the potash fertilizer pesticide, and then watering periodically to keep the water content of the soil at 65-75% of the maximum water holding capacity of the soil;
the regulator II is an aqueous solution containing the following active ingredient components: 0.06-0.10% of paclobutrazol and 0.15-0.20% of amino acid-containing water-soluble fertilizer;
the potassium fertilizer insecticide is prepared by mixing the following components in mass: 75-100 parts of potassium dihydrogen phosphate, g parts of dinotefuran and 10-15 parts of g parts of dinotefuran;
step (3), when the inflorescences germinate to the length of 3-6 cm in the last and middle 12 months of each year, spraying a regulator III to the inflorescences, avoiding spraying to leaves, branches and stems during spraying, and watering periodically to keep the water content of the soil at 50-65% of the maximum water holding capacity of the soil;
the regulator III is an aqueous solution containing the following active ingredient components: 0.06-0.08% ethephon, 0.12-0.14% deep sea fish protein growth promoting essence, 0.0015-0.0025% amino oligose;
step (4), spraying a regulator IV to inflorescences when the inflorescences germinate to a length of more than or equal to 12cm in the last 12 th to 1 st last year of the year, avoiding spraying to leaves, branches and stems during spraying, and watering periodically to keep the water content of soil at 75-85% of the maximum water holding capacity of the soil;
the regulator IV is an aqueous solution containing the following active components: 1.5 to 2 percent of glucose, 0.5 to 0.75 percent of honey, 0.15 to 0.2 percent of penconazole and 0.07 to 0.12 percent of fluid boron.
2. The method for preventing the banding phenomenon of the high-ranked imperial concubine flower according to claim 1, wherein the method comprises the following steps of: the width of the annular fertilization ditch in the step (1) is 15-25 cm, and the depth is 25-35 cm.
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