CN106538220A - Bulbus Allii Cepae Flos abelmoschi manihot method for interplanting cultivation - Google Patents

Abstract

The invention discloses an onion-okra interplanting cultivation method. The onion adopts a four-dense and one thin planting method, and the four dense rows are covered with plastic film, and the thin rows are not covered with plastic film; the okra is planted in the sparse row. The symbiotic period of described onion and okra is in early May-early June. Adopting the technical scheme of the invention to carry out interplanting cultivation of onion and okra can make full use of natural resources such as soil, light, water conservancy, etc., so that the per unit yield of onion and okra both have relatively high yields, thereby obtaining significant economic benefits.

Description

Onion-okra Interplanting Cultivation Method

technical field

The invention relates to the technical field of crop cultivation, in particular to an onion-okra interplanting cultivation method.

Background technique

Okra is a special economic crop that can be used as medicine, vegetable, fodder and flowers. Its application prospects are increasingly broad, the demand is increasing day by day, and the market benefits are significant. However, due to the increase in land prices and labor costs, the benefits of pure planting of okra are relatively low. , planting one season of spring okra, not only the idle time of the land from November to April of the following year is as long as half a year, wasting natural resources such as light, heat, water, gas and so on during the idle time of the okra field; The green leaf area of okra is very small, which seriously wastes light resources, thus limiting the expansion of okra planting scale and the development of industry. Aiming at many problems in okra planting, through experiments and demonstrations, it is found that onion and okra have a short symbiotic period and are suitable for intercropping. Yield is a problem to be solved in onion-okra intercropping.

Contents of the invention

In order to solve the deficiencies in the prior art, the invention provides an onion-okra interplanting cultivation method, which can significantly increase the yield of onion and okra interplanting.

In order to achieve the above object, the invention provides a kind of onion-okra interplanting cultivation method, the onion adopts four dense and one thin planting methods, and the four dense rows are covered with plastic film, and the sparse rows are not covered with plastic film; The okra is planted between sparse rows; the symbiotic period of the onion and the okra is in early May-early June.

In the onion-okra interplanting cultivation method of the present invention, the onion adopts the planting method of four dense and one thin, and the onion is high-yield through reasonable dense planting, and the film is covered between the dense plantings to promote the premature production and increase of the onion; the okra is interplanted between the sparse rows , to create high-efficiency groups of okra, and greatly increase the yield of okra; the interplanting of onions and okra, through specific planting methods, on the one hand, give full play to the coordinated use of soil nutrients between interplanting crops, taking into account the two crops of onion and okra at the same time High yield; on the other hand, it exerts the synergistic effect of compound groups on the types and quantities of natural enemies, and uses the odor and toxicity secreted by interplanting crops to achieve the effect of reducing pests and diseases. The "four dense and one thin" planting method of onions takes into account the advantages of the "three dense and one thin" and "narrow row" planting methods. The wide row spacing ensures the row spacing of okra planting, and this interplanting method is more efficient. It is beneficial to promote the steady development of the basal stem nodes of the okra, improve the lodging and disease resistance of the okra, and increase the yield. Through the interplanting cultivation of the present invention, natural resources such as soil, light, and water conservancy can be fully utilized, so that the yield per unit area of onions and okra is relatively high, thereby obtaining significant economic benefits.

As a limitation to the above-mentioned technical scheme, the dense row spacing is 15-17cm, the sparse row spacing is 25-28cm, the film width is 80-90cm, and ^20000-23000 onions are planted per 667m2.

As a limitation to the above-mentioned technical scheme, the okra planting row spacing is 75-80cm, the plant spacing is 25-30cm, and 2900-3500 okra plants are planted per 667m ² .

Further limit the planting row spacing, plant spacing and planting amount per mu of onions and okra. Generally, onions are densely rowed 15cm and sparsely rowed 25cm, which is conducive to the growth of a single onion and increases the yield per mu. The row spacing of okra is 75cm, which is relatively high-yield cultivation of okra Reasonable row spacing, so that the interplanting cultivation method can be optimized to obtain higher crop yields.

As a limitation to the above-mentioned technical scheme, the onion is selected from an early-maturing variety, and the dry sowing method is adopted to sow seedlings. The onion seedlings planted have a stem diameter of 0.6-0.9 cm, a plant height of 20-30 cm, and 3-4 true leaves.

As a limitation to the above-mentioned technical scheme, described onion seedling cultivation comprises the following steps:

a1. Fertilization and soil preparation: apply decomposed organic fertilizer in an amount of 5-6kg/ ^m2 , loosen and level the land and make it into a flat furrow with a width of 1-1.2m and a length of no more than 10m;

a2. Sowing: Sow the onion seeds evenly on the flat border, water after stepping on the ground, and cover the fine soil with a thickness of 0.5-1cm after the water has penetrated;

a3. Sanshui Qimiao: pour the second water on the 4th to 5th day after sowing, and pour the third water on the 8th to 9th day when the buds appear on the flat border surface, and 10 days later, the seedlings will be aligned;

a4. Seedling stage management: water once every 7-10 days, pull out grass once, and thin the seedlings in places where the seedlings are thick, with a distance of 3-4cm.

As a limitation to the above-mentioned technical solution, the okra is selected from mid-to-early-maturing varieties, and seedlings are grown in plug trays, and the okra seedlings planted have 2-3 true leaves.

As a limitation to the above-mentioned technical scheme, described okra seedling cultivation comprises the following steps:

b1. Prepare nutrient soil: prepare nutrient soil with decomposed farmyard manure and non-okra garden soil at a ratio of 3:7, apply 200-300g of nitrogen, phosphorus and potassium compound fertilizer per cubic meter of nutrient soil, and mix evenly;

b2. Accelerating germination: Soak the seeds in 50-55°C water and stir, keep the water temperature constant for 15-20min, then continue soaking at 25-30°C for 10-12h, wash with water, and then germinate at 25-30°C. Wait until 50% of the seeds are white for sowing;

b3. Sowing: put nutrient soil into a hole tray with 32 or 50 holes, sow 1 germinated seed in the center of each hole of the hole tray, spray 50% phoxim 1200-1500 times liquid before emergence after sowing to prevent and control pests;

b4. Seedling stage management: During the germination stage, the daytime temperature is kept at 28-30°C, and the night temperature is not lower than 15°C; during the emergence stage, the daytime temperature is kept at 25-30°C, the night temperature is above 13°C, and the ground temperature is 18-20°C.

Further limit the seedling raising methods of onions and okra. Onions are sown and raised by dry sowing, and okra is raised in hole pots, so as to provide more suitable and better quality seedlings for planting in the subsequent interplanting cultivation process, so as to obtain two kinds of crops. high yield.

As a limitation to the above-mentioned technical scheme, fertilizer and water management includes in the interplanting cultivation method of the onion-okra:

(1) Apply base fertilizer before planting onion and okra: apply 4000-5000kg of organic fertilizer, ^40-50kg of superphosphate, and 25-30kg of potassium sulfate per 667m2;

(2) Overwinter topdressing and watering: When turning green, combine with pouring green water for topdressing, apply 10-15kg of ammonium ^sulfate and 20-30kg of superphosphate per 667m2; 30-40 days after turning green, apply ammonium ^sulfate 15 -20kg; 50-60 days after turning green, add ^20-25kg of ammonium sulfate per 667m2, and add 3-5kg of potassium fertilizer;

(3) Topdressing okra after onion harvest: apply urea 5-8kg per 667m ² , farm manure 1000-1500kg, diammonium phosphate 15-20kg; apply urea 10-15kg per 667m ² at the initial flowering stage; In the first ten days of the month, spray 0.2% potassium dihydrogen phosphate aqueous solution or 0.5-1% urea solution.

Further limit the fertilizer and water management in the interplanting cultivation process, provide sufficient nutrients for both crops in the interplanting process, and increase crop yield.

In summary, adopting the technical scheme of the present invention to carry out interplanting cultivation of onion and okra, through a specific planting method, on the one hand, the cooperative use of interplanting crops to soil nutrition is brought into play, and the simultaneous high yield of onion and okra is taken into account. ; On the other hand, the synergistic effect of compound groups on the types and quantities of natural enemies can be exerted, and the effect of reducing pests and diseases can be achieved by using the odor and toxicity secreted by interplanting crops. Through the interplanting cultivation of the present invention, natural resources such as soil, light, and water conservancy can be fully utilized, so that the yield per unit area of onions and okra is relatively high, thereby obtaining significant economic benefits.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example

Present embodiment relates to the interplanting cultivation of onion-okra, and cultivation method is as follows:

(1) Cultivation season

The onions in central and southern Hebei are sown from September 1 to 10, and the planting period is from late October to early November. About 70% of the plants are harvested when they fall naturally in early June. In other areas, seeds can be sown according to local cultivation experience, and there is 7-10 days of slow seedling time after planting before winter;

Okra is generally sown in early April, planted in early May, and harvested from June to October;

The symbiotic period of onion and okra is from early May to early June.

(2) Soil preparation and fertilization

Onion-okra interplanting land should avoid repeated cropping. It requires fertile soil and convenient irrigation and drainage. When planting onions, apply 4000-5000kg of organic fertilizer, 50kg of superphosphate, and 30kg of potassium sulfate per 667m ² (per mu) as base fertilizer. Deep plowing and harrowing will make flat furrows.

(3) Variety selection

Precocious varieties of onions are used, such as: yellow onion, purple star, Xi'an red skin, etc.;

Okra is selected from early-maturing varieties such as: Hongyu, Kariba, Wufu, Yang Guifei, etc.

(4) interplanting of onion-okra

Four dense (rows) and one thin (row) of onions are planted, and plastic film is laid between the four dense rows, and no plastic film is spread between the sparse rows; the interplanting planting method of okra is planted between the sparse rows.

4.1 Planting of onions

4.1.1 Seedling cultivation

Choose a vegetable garden with loose soil, fertile soil, and no heavy cropping. The steps for raising seedlings are as follows:

a1. Fertilization and soil preparation: apply decomposed and loose organic fertilizer at an amount of 5kg/ ^m2 , and loosen and level the land to make a flat furrow with a width of 1m and a length of no more than 10m;

a2. Sowing: Dry sowing is the main method. Divide the flat furrow surface into shallow furrows, sow the seeds evenly on the furrow surface, hug it once after sowing, make the seeds into the soil, water them after stepping on them, and cover them with fine soil after the water seeps through. 0.5-1cm thick;

a3. Equal seedlings with three waters: pour the second water on the 4th to 5th day after sowing, pour the third water on the 8th to 9th day when the buds appear on the border surface, and 10 days later, the seedlings are equalized;

a4. Seedling stage management: pour small water every 7-10 days, pull out grass once, thin the seedlings in places where the seedlings are thick, and the seedling distance is 3-4cm; after the seedlings grow for 30 days, a small amount of urea and potassium dihydrogen phosphate can be added. , The suitable seedling age for onion planting is 0.6-0.9 cm in stem diameter, about 20 cm in plant height, with 3 to 4 true leaves, and the leaf color is dark green.

4.1.2 Colonization

Grading of seedling selection: Eliminate sick seedlings, weak seedlings, tillering seedlings and bolting dangerous seedlings after raising seedlings, and plant the selected strong seedlings separately according to size, so as to facilitate management and promote consistent growth;

Soil preparation: pour enough water into the well-leveled border, spray herbicide when the humidity is suitable, use 33% field replenishing EC, use 100-120ml per 667m ² , add 30kg of water to dilute and then spray; after the herbicide is sprayed, spread mulch , the width of the film used is 80cm, and the effective area after removing the covered soil area is 50cm;

Planting: Four dense and one thin planting methods are adopted, and each film is planted in 4 rows, with a row spacing of 15cm, a plant spacing of 15cm, and a large row (or thin row) row spacing of 25cm (that is, the distance between two films); 23,000 onions are planted per 667m ² The planting depth is 2-3cm; water in time after planting, and then water again after 4-5 days.

4.1.3 Overwintering and field management after wintering

Water permeablely before the soil is frozen, and add water once in winter depending on the degree of soil water shortage after a few droughts and no snow, and finish pouring in the morning on a warm sunny day to ensure that it all penetrates into the ground.

Topdressing and watering: When turning green, combine with pouring green water for topdressing, apply 10-15kg of ammonium sulfate and 20-30kg of superphosphate per 667m ² , this time the amount of watering should not be too large; about 30 days after turning green, the leaves will grow vigorously During the fertilization period, irrigation should be appropriately strengthened, and ammonium sulfate ^15-20kg should be added for every 667m2; 50-60 days after turning green, the bulbs will start to expand, which is the critical period for topdressing, and ^20-25kg of ammonium sulfate should be added for every 667m2, and appropriate amount should be applied. Potassium fertilizer; water once 10 days before bulb expansion and then squat seedlings, squatting seedlings for about 10 days, watering should be frequent after squatting seedlings, keep the soil moist, watering is better in the morning and evening; stop watering 7-8 days before harvest;

Intertillage and weeding: 2-3 times of intertillage and weeding are required during the leaf growth period, with a depth of about 3cm to maintain soil moisture; after the bulb expansion period, stop intertillage and remove any weeds.

4.1.4 Pest control

The pests are mainly thrips onion, which generally start to occur in May, and the control begins in early April. 10% imidacloprid wettable powder can be sprayed once every 10 days, and even sprayed 2-3 times.

The disease is mainly downy mildew, and it is generally prevented and controlled from the first ten days of April. It can be sprayed with 500 times of 50% carbendazim, 600 times of 75% chlorothalonil or 500 times of 64% antivirus alum. The above pesticides are used alternately. Continuous prevention and control for more than 3 times, the ground should also be sprayed when spraying to reduce the chance of mutual infection.

4.1.5 Harvesting

About two-thirds of the plants have soft pseudostems, the upper part is naturally lodging, the lower 1-2 leaves are withered and yellow, and the third-fourth leaves are still green. Harvest when the outer scales of the bulbs are dry, and use plastic when harvesting Barrel tied to waist to harvest onions.

4.2 Planting of okra

4.2.1 Seedling cultivation

b1. Prepare nutrient soil: use fully decomposed farmyard manure and non-okra garden soil to prepare nutrient soil at a ratio of 3:7, apply 200-300g NPK compound fertilizer per cubic meter of nutrient soil, and mix evenly;

b2. Acceleration of germination: Before sowing, soak the seeds in hot water at about 55°C and stir, keep the water temperature constant for 15-20 minutes, then continue soaking at 25-30°C for about 12 hours, wash them with clean water, and then accelerate the germination. Accelerate germination at 25-30°C, wait until 50% of the seeds are white for sowing;

b3. Sowing: Use 32-hole plastic plugs to grow seedlings. The nutrient soil in the plugs needs to be compacted. The number of seedlings should be more than 10% of the required seedlings. The plugs should be placed near the planting plot , in a dry place with high terrain; when sowing, pierce a hole 0.5-0.8cm deep in the center of each hole, sow 1 germinated seed in each hole, cover the soil with a thickness of 1.0cm, and use 50% phoxim 1200-1500 times after sowing and before emergence Spray the bed surface with liquid to prevent pests;

b4. Seedling stage management: during the germination stage, the daytime temperature is kept at 28-30°C, and the night temperature is not lower than 15°C; Too dry and too wet.

4.2.2 Colonization

In early May, the temperature is 13°C and the soil temperature is about 15°C. When the seedlings grow to ^2-3 true leaves, they are planted in large rows of onions with a row spacing of 75cm and a plant spacing of 30cm. About 2900 plants are planted per 667m2.

4.2.3 Field management

Watering: Water supply must be ensured in May during the symbiotic period of onions and okra. After harvesting onions, water according to the moisture content. When flowering and fruiting, there should be no shortage of water, and sufficient water should be supplied in time; after heavy rain, water should be drained in time; from the end of August to the first ten days of September Timely watering in case of drought;

Cultivation and cultivation of soil: timely cultivation after harvesting onions, combined with cultivation at the end of June and early July, okra is generally thinner after onions are harvested, management should be "grab" first, and take the time to topdress fertilization, watering, cultivating loose soil, weeding, and pest control , to prevent the formation of small old seedlings;

Topdressing: Topdress seedling fertilizer immediately after onion harvest, apply urea 5-8kg per 667m ² , high-quality farmyard manure 1000-1500kg, and diammonium phosphate 15kg; add urea 10-15kg per 667m ² at the initial flowering stage; In the first ten days of the month, spray 0.2% potassium dihydrogen phosphate aqueous solution or 0.5-1% urea solution depending on the growth of okra;

Pruning: Remove side branches in time to reduce nutrient consumption; remove old leaves in time in the middle and late stages, keep 1-2 leaves under pods, and cut off old fruit pods in time.

4.2.4 Pest control

Prevention and treatment of viral diseases: Spray with 500 times liquid of 20% morpholine hydrochloride·copper wettable powder or 300 times liquid of 0.5% mushroom proteoglycan (antivirus No. 1) water agent, spray once every 7 days, for 2 to 3 consecutive days Second-rate;

Disease prevention and control at the seedling stage and adult plant stage: use 72% cream urea · manganese zinc wettable powder (Kelu) 600-800 times liquid or 58% metalaxyl · manganese zinc wettable powder 500 times liquid spray control at the early stage of the disease, 7 - Once every 10 days, 2 to 3 times in a row;

Aphid control: 10% imidacloprid wettable powder 1000 times liquid spray can be used for control;

Cotton bollworm control: In the young larvae, use 20% chlorantraniliprole water dispersion (Kangkuan) 3000 times liquid or 10% flubendiamide suspension concentrate (Fuxianan) 1500 times liquid spray control, spray for 7 days 1 time, 2-3 times in a row.

4.1.5 Harvesting

3-4 days after the flower fades, the tender fruit is 8-12cm long and can be harvested. When harvesting, use scissors to cut off the fruit stalk to prevent damage to the branches.

(5) Output

Two crops of onion and okra can be harvested within one year, with 4500-5000kg of onions and 2000-2500kg of okra pods per 667m ² .

comparative example

This implementation involves the impact of different planting methods on onion-okra interplanting.

Onion seedlings are raised in early September, transplanted in early November, covered with plastic film, and harvested in mid-to-late May; okra is seeded in early April, transplanted in early May, and harvested at the end of October. As the okra is pulled out, the soil is prepared to improve the quality of transplanting, create sufficient moisture, and apply sufficient fertilizer.

Three planting methods were set up in the experiment:

The first type of onion adopts the planting method of four dense and one thin, with a dense row of 15cm, a sparse row of 25cm, and a plant spacing of 15cm. About 23,000 onions are planted per 667 square meters; okra seedlings are transplanted with early-maturing varieties, and they are planted in the sparse rows of onions. , the row spacing is 75cm, the plant spacing is 30cm, and 2200 plants are planted per 667㎡;

The second type of onion adopts the three-density and one-thin planting method, with a dense row of 15cm, a sparse row of 30cm, and a plant spacing of 15cm. About 22,000 onions are planted per 667 square meters; okra seedlings are transplanted with early-maturing varieties, and they are planted in the sparse rows of onions. , the row spacing is 60cm, the plant spacing is 50cm, and 2200 plants are planted per 667㎡;

The third type of onion adopts the three-density and one-thin planting method, with a dense row of 18cm, a sparse row of 36cm, and a plant spacing of 13cm. About 21,000 onions are planted per 667 square meters; okra seedlings are transplanted with early-maturing varieties, and they are planted in the sparse rows of onions. , the row spacing is 72cm, the plant spacing is 40cm, and 2100 plants are planted per 667㎡;

The planted onion variety is "Zixing" and the okra variety is "Red Jade". The planting results are shown in the table below:

From the results in the above table, it can be seen that the comprehensive result of the four dense and one thin planting method is the best.

In summary, the onion-okra interplanting cultivation method of the present invention can make full use of natural resources such as soil, light, water conservancy, etc., so that the per unit yield of onions and okra all have relatively high yields, and significant economic benefits are obtained.

Claims (8)

1. a kind of Bulbus Allii Cepae-Flos abelmoschi manihot method for interplanting cultivation, it is characterised in that the Bulbus Allii Cepae adopts four close one dilute planting patternss, Mulch film is coated between four space-ins, mulch film between thin line, is not coated with；The Flos abelmoschi manihot is planted between thin line；The Bulbus Allii Cepae and the symbiosis phase of Flos abelmoschi manihot In the first tenday period of a month in May-early June.

2. Bulbus Allii Cepae according to claim 1-Flos abelmoschi manihot method for interplanting cultivation, it is characterised in that：The space-in line-spacing is 15- 17cm, thin line line-spacing are 25-28cm, and mulch film width is 80-90cm, per 667m²Plantation Bulbus Allii Cepae 20000-23000 strains.

3. Bulbus Allii Cepae according to claim 1-Flos abelmoschi manihot method for interplanting cultivation, it is characterised in that：The Flos abelmoschi manihot Planting Row Distance is 75-80cm, spacing in the rows are 25-30cm, per 667m²Plantation Flos abelmoschi manihot 2900-3500 strains.

4. Bulbus Allii Cepae according to claim 1-Flos abelmoschi manihot method for interplanting cultivation, it is characterised in that：The Bulbus Allii Cepae is from early cooked food Kind, take and dry broadcast method seeding and seedling raising, the thick 0.6-0.9cm of onion set stem of field planting, plant height 20-30cm, with 3-4 piece true leaves.

5. Bulbus Allii Cepae according to claim 4-Flos abelmoschi manihot method for interplanting cultivation, it is characterised in that：The Bulbus Allii Cepae nursery include with Lower step：

A1. fertilising, site preparation：By 5-6kg/m²Amount apply the fertilizer that becomes thoroughly decomposed, will soil scarifying flatten after make wide 1-1.2m, The flat furrow of of length no more than 10m；

A2. sow：By onion seed uniform broadcasting in flat furrow, water after treading, water covers fine earth 0.5-1cm after having oozed thick；

A3. the neat Seedling of three water：After planting the second water is poured within 4-5 days, the 3rd water is poured when flat furrow furrow face reveals bud within the 8-9 days, after 10 days Qi Miao；

A4. seedling management：A water was poured every 7-10 days, once grass, thinning where Seedling is thick, spacing 3-4cm is pulled out.

6. Bulbus Allii Cepae according to claim 1-Flos abelmoschi manihot method for interplanting cultivation, it is characterised in that：The Flos abelmoschi manihot selects mid-early maturity Kind, takes the Flos abelmoschi manihot Seedling of hole plate seedling growth, field planting to have 2-3 piece true leaves.

7. Bulbus Allii Cepae according to claim 6-Flos abelmoschi manihot method for interplanting cultivation, it is characterised in that：The Flos abelmoschi manihot nursery include with Lower step：

B1. prepare Nutrition Soil：3 are pressed with non-Flos abelmoschi manihot garden mould with well-rotted farmyard manure:7 prepare Nutrition Soil, and every cubic metre of Nutrition Soil applies 200-300g nitrogen-phosphorus-potassium compound fertilizers, puddle uniform；

B2. accelerating germination：Seed is dipped in 50-55 DEG C of water and is stirred, keep the constant 15-20min of water temperature, then in 25-30 DEG C of condition It is lower to continue immersion 10-12h, the accelerating germination at a temperature of 25-30 DEG C is cleaned with clear water, treat that 50% seed shows money or valuables one carries unintentionally for sowing；

B3. sow：Nutrition Soil is loaded into the hole tray in 32 or 50 holes, 1 grain germination seed is broadcast at every cave center of hole tray, is after planting gone out Before seedling sprays the 1200-1500 times of liquid pest control of 50% phoxim；

B4. seedling management：Germination period daytime temperature is maintained at 28-30 DEG C, and night temperature is not less than 15 DEG C；Daytime in seeding stage temperature is maintained at 25-30 DEG C, night temperature more than 13 DEG C, 18-20 DEG C of ground temperature.

8. Bulbus Allii Cepae according to claim 1-Flos abelmoschi manihot method for interplanting cultivation, it is characterised in that：The interplanting of the Bulbus Allii Cepae-Flos abelmoschi manihot In cultural method, rich water quality management includes：

(1) Bulbus Allii Cepae, the front administration base manure of Flos abelmoschi manihot plantation：Per 667m²Apply 4000-5000kg fertilizers, calcium superphosphate 40-50kg, sulfur Sour potassium 25-30kg；

(2) survive the winter topdressing and watering：Combine when turning green and pour water of turning green and topdressed, per 667m²Ammonium sulfate 10-15kg is applied, phosphorus is crossed Sour calcium 20-30kg；Pour water within 30-40 days after turning green, per 667m²Apply ammonium sulfate 15-20kg；50-60 days after turning green, per 667m²Apply With additional ammonium sulfate 20-25kg, coordinate and apply potash fertilizer 3-5kg；

(3) Bulbus Allii Cepae is topdressed to Flos abelmoschi manihot after harvesting：Per 667m²Apply carbamide 5-8kg, farm manure 1000-1500kg, Diammonium phosphate (DAP) 15- 20kg；Initial bloom stage is per 667m²Apply carbamide 10-15kg；Mid or late August to early September sprays the phosphoric acid that mass concentration is 0.2% The urea liquid of dihydro aqueous solutions of potassium or 0.5-1%.