CN116806643A - Matched cultivation method of Hainan rice variety - Google Patents

Abstract

The invention discloses a matched cultivation method of a Hainan rice variety, and belongs to the technical field of crop cultivation. The invention provides a mating cultivation method of a Hainan rice variety, which comprises a rice variety selection, a planting strategy, a water and fertilizer management strategy and a prevention and control strategy, so as to form a mating cultivation technology of a Hainan green high-quality high-efficiency rice variety. By utilizing the matched cultivation method, the improved variety is combined with the improved method, the application amount of chemical fertilizers and pesticides is reduced, the pollution to soil and rivers can be reduced, and the environment is improved. The method of the invention can save the planting cost, increase the income of farmers and improve the ecological benefit and the social benefit.

Description

Matched cultivation method of Hainan rice variety

Technical Field

The invention belongs to the technical field of crop cultivation, and particularly relates to a matched cultivation method of Hainan rice varieties.

Background

The Chinese rice sowing surface accounts for 1/4 of the national grain crops, and the yield accounts for more than half of the yield. The cultivation history has been 14000-18000 years. Is an important grain crop; besides the edible caryopsis, the rice bran can be used for preparing starch, brewing wine and vinegar, and the rice bran can be used for preparing sugar, extracting oil and extracting furfural for industrial and medical use; the rice stalks are good feed, papermaking raw materials and weaving materials, and the rice sprouts and the rice roots can be used for medical purposes. Nearly half of the world's population, including nearly the entire east and southeast asia population, is fed by rice, which is predominantly distributed in tropical and subtropical regions of asia and africa.

Rice is the most important staple food crop in China, and along with the reduction of the cultivated area, the development of socioeconomic performance and the great improvement of the living standard of people, the improvement of the yield of the rice and the improvement of the quality of the rice become important directions in the research of the rice. Historically, the application of dwarf rice breeding and hybrid rice realizes two leaps of rice yield, and the important breakthrough of yield brought by the two improvements is closely related to the improvement of rice plant types, so that the cultivation of ideal plant type rice is still the direction of the current breeder. Meanwhile, with the improvement of living standard, people's demands for high-quality rice are getting stronger. Currently, although high-yield rice varieties play an important role in improving rice yield, improved variety mating cultivation methods corresponding to the high-yield rice varieties are lacking.

Disclosure of Invention

The invention aims to provide a matched cultivation method of Hainan rice variety, which saves the planting cost, increases the income of farmers and improves the ecological benefit and the social benefit.

The invention provides a matched cultivation method of Hainan rice variety, which comprises the following steps: (1) Selecting a rice variety or variety combination with strong resistance for thin planting;

(2) The organic fertilizer is combined with the inorganic fertilizer during fertilization; the shallow water layer is kept in the green-turning period during irrigation, the wet irrigation is carried out in the tillering period, the field exposure and the field sunning are started when the number of seedlings reaches 80% -90% of the number of spikes, the shallow water layer is irrigated after the spikes are differentiated and kept to the heading and flowering period, the intermittent irrigation in the grouting mature period and the water cut-off before harvesting are alternated in a dry-wet manner;

(3) The method for controlling the harmful organisms comprises agricultural control, biological control, physical control and medicament control.

Preferably, the rice variety in the step (1) comprises a rice variety with good quality, high yield and good resistance which is successfully examined by national approval or Hainan province or demonstrated in Hainan province, and the seed quality meets the requirements of GB 4404.1.

Preferably, the thin planting in the step (1) comprises thin planting of direct seeding rice and thin planting of transplanting rice;

the seed sowing quantity of the direct seeding rice thin planting is 667m ² 3 kg～4kg；

The thin transplanting of the transplanted rice comprises the following steps: the planting density of early and late rice is 667m ² 2 ten thousand points, each point is 3 to 4 points; single cropping rice of 667m ² 1.2 to 1.7 ten thousand holes, 3 to 4 holes per hole of conventional rice and 1 to 2 holes per hybrid rice.

Preferably, when transplanting to dilution, wide-row narrow plants or wide-row narrow plants are adopted for planting;

the wide row narrow plants comprise early and late rice with row spacing of 25.0cm and plant spacing of 15 cm-16.7 cm when transplanting;

the wide-narrow row planting comprises a wide row of 33.3cm and a narrow row of 16.7cm, and the plant spacing is 15 cm-16.7 cm during transplanting.

Preferably, the step (2) is carried out according to the soil property, and when the soil property is common, the organic fertilizer accounts for more than 30 percent of the total fertilizing amount, and the fertilizing dosage of nitrogen, phosphorus and potassium is N:P ₂ O ₅ ∶K ₂ O is 1:0.5:1.

Preferably, the fertilizer is not applied when the soil is fertile or the melon and vegetable are planted in the previous season;

when the soil is of general quality, applying base fertilizer and surface fertilizer, each 667m ² The applied base fertilizer comprises the steps of mixing 400 kg-500 kg of organic fertilizer with 30kg of calcium superphosphate for retting; the fertilizer comprises urea, and the dosage of the urea is 667m ² 5kg; applying back green fertilizer 4-5 d after transplanting, applying tillering-promoting fertilizer 10d after transplanting, applying grain-increasing fertilizer in the II stage Shi Zhuangbao of seedling and young spike differentiation after sunning, and applying fruiting-promoting fertilizer after spike alignment.

Preferably, the green returning fertilizer comprises every 667m ² Shi Niaosu 10kg;

the said tillering-promoting fertilizer includes every 667m ² Applying 7.5kg of urea and 7.5kg of compound fertilizer respectively;

the bud-strengthening and grain-increasing fertilizer comprises every 667m ² Shi Lvhua Potassium 15kg;

the ripening fertilizer comprises a grain size of 667m ² Spraying an aqueous solution of potassium dihydrogen phosphate with the mass concentration of 0.3 percent.

Preferably, the pesticide used in the medicament control of the step (3) meets the regulations of NY/T1276 and GB/T8321.

Preferably, harvesting, transportation, storage and byproduct handling are also included.

The beneficial effects are that: the invention provides a mating cultivation method of a Hainan rice variety, which comprises a rice variety selection, a planting strategy, a water and fertilizer management strategy and a prevention and control strategy, so as to form a mating cultivation technology of a Hainan green high-quality high-efficiency rice variety. By utilizing the matched cultivation method, varieties such as 9 # sea xiu, hainong red 1 # sea feng black glutinous 2 # sea are planted in the sea city dragon Hua Oulong spring town, the new slope town, the five-finger mountain city Mao Yangzhen, the Baisha county, etc., the area of the new variety of the green high-quality high-efficiency rice is more than 1000 mu, the price is 5-7 times that of common rice, the income is increased by about 1500-2500 yuan per mu, and the economic benefit is increased by 15-25 ten thousand yuan per mu. The improved variety is combined with the improved method, the fertilizer is not used by the Haikou city dragon Hua Oulong spring town and the new slope town, the application amount of the fertilizer and the pesticide is reduced by more than 20 percent in other areas, the pollution to soil and rivers can be reduced, and the environment is improved. The method of the invention can save the planting cost, increase the income of farmers and improve the ecological benefit and the social benefit.

Detailed Description

The invention provides a matched cultivation method of Hainan rice variety, which comprises the following steps: (1) Selecting a rice variety or variety combination with strong resistance for thin planting;

(2) The organic fertilizer is combined with the inorganic fertilizer during fertilization; the shallow water layer is kept in the green-turning period during irrigation, the wet irrigation is carried out in the tillering period, the field exposure and the field sunning are started when the number of seedlings reaches 80% -90% of the number of spikes, the shallow water layer is irrigated after the spikes are differentiated and kept to the heading and flowering period, the intermittent irrigation in the grouting mature period and the water cut-off before harvesting are alternated in a dry-wet manner;

(3) The method for controlling the harmful organisms comprises agricultural control, biological control, physical control and medicament control.

The matched cultivation method comprises the steps of selecting rice varieties, selecting rice varieties or variety combinations with strong resistance for thin planting, wherein the rice varieties preferably comprise high-quality, high-yield and good-resistance rice varieties which pass national approval or Hainan approval or demonstration success in Hainan places, and the seed quality accords with the specification of GB 4404.1. The present invention is preferably a rice variety or combination of rice varieties with high insect resistance and disease resistance, and is replaced regularly, and examples are described by taking varieties such as Haixiu No. 9, haimong No. 1, haifeng black glutinous No. 2, etc., but the present invention is not limited to the whole protection scope thereof.

The invention performs thin planting on selected rice varieties or rice variety combinations, wherein the thin planting preferably comprises direct seeding rice thin planting and transplanting rice thin planting; the seed sowing quantity of the direct seeding rice thin planting is 667m ² 3.3 kg-4 kg, advocates to adopt seeds coated by biological seed coating agent so as to prevent damage of soil insects, pay attention to sowing quality, ensure full seedlings and timely sparse and dense filling after sowing emergence. When the transplanted rice is subjected to thin planting, the method preferably comprises the following steps: the planting density of early and late rice is generally 667m ² 2 ten thousand points, each point is 3 to 4 points; single cropping rice of 667m ² 1.2 to 1.7 ten thousand holes, 3 to 4 holes per hole of conventional rice and 1 to 2 holes per hybrid rice. When the transplanting is carried out, the wide-row narrow plants or the wide-narrow rows are preferably used for planting, the transplanting specification of early and late rice is 25.0cm multiplied by 15 cm-16.7 cm or (33.3cm+16.7cm) multiplied by 15 cm-16.7 cm, namely, the row spacing is 25.0cm, the plant spacing is 15 cm-16.7 cm or the wide row is 33.3cm, the narrow row is 16.7cm, and the plant spacing is 15 cm-16.7 cm.

When the fertilizer is applied, the total amount of nitrogen application and fertilizer application is strictly controlled by adopting an organic and inorganic combination mode, and the nitrogen, phosphorus and potassium are ensured to be applied in a matched manner; the soil formula fertilization is advocated, if the soil is fertile (the pH value is generally between 6 and 7.5, the organic matter content is more than 5 percent, the nitrogen content is more than 0.1 percent, the potassium content is more than 100mg/kg, the phosphorus content is more than 30 mg/kg) or the melon is fertilized in the previous season. If the soil quality is generally over 30% of the total fertilizer application, the organic fertilizer is nitrogen, phosphorus and potassium (N: P ₂ O5∶K ₂ O) is generally 1:0.5:1. Applying base fertilizer of 667m each ² 400kg to 500kg of organic fertilizer and 30kg of calcium superphosphate are applied to the field for retting, uniformly raking is performed, and 5kg of urea is used as a fertilizer. 4-5 d Shi Niaosu kg of seedling returning promoting agent is planted, 7.5kg of urea and compound fertilizer (15-15-15) are applied to 10d of seedling returning agent after seedling planting, and tillering are promoted; after the field is dried, 15kg of potassium is applied again, fertilizer, bud and grain are increased in the second stage of seedling young spike differentiation of the rice seedling, and Shi Lvhua kg of potassium is added; and 3d after the scion alignment is matched with pest control and spraying 0.2 to 0.3 percent of monopotassium phosphate to improve the fruiting rate and the plumpness. When the fertilizer is applied, the safety interval period is required to be ensured to be more than 15 d.

In the invention, the fertilizer used for fertilization meets the regulations of NY/T496, chemical and biological fertilizers which are not registered by national or provincial agricultural departments are not used, and fertilizers with excessive heavy metal content and 7d of safe drainage period are not used.

In the irrigation process, reasonable irrigation water meets the regulation of NY 5116, and the irrigation method preferably comprises the following steps: the shallow water layer is kept at 3-5 cm in the turning green stage, 2-3 cm is irrigated in a wetting mode in the tillering stage, the field is exposed and sunned when the number of seedlings reaches 80% -90% of the number of spikes, and repeated light sunning is adopted for 5-7 days to control ineffective tillers and promote root system downward pricking growth and stalk strengthening and plant strengthening. Irrigation is carried out after the spike differentiation, and a shallow water layer is kept until the spike heading stage. Intermittent irrigation (irrigation of a water layer of 3-5 cm when the field is anhydrous) in the mature period of grouting, and alternation of dry and wet. Water was cut off around 7d before harvesting.

When the pest control is carried out, the plant protection policy of 'pre-defense is implemented, the pest control is comprehensively carried out, and the measures of' agricultural control, biological control, physical control, chemical control and the like are comprehensively applied from the stability of the rice field ecological system, so as to control the occurrence and hazard of the pest.

The agricultural control method of the invention preferably comprises the steps of selecting a variety with strong resistance, periodically rotating the variety, maintaining the variety resistance and reducing the occurrence of plant diseases and insect pests; and adopting reasonable cultivation system, rotation stubble-changing, planting and raising (rice and duck, rice and fish, rice and crab, etc.), combining with body-building cultivation and other agronomic measures to reduce the occurrence of harmful organisms.

The biological control preferably comprises the steps of selecting medium and low toxicity chemical pesticides with small killing power to natural enemies, avoiding the sensitive period of the natural enemies to the pesticides, creating an environment suitable for natural enemies to reproduce, and keeping the natural enemies; utilizes and releases natural enemies to control the occurrence of harmful organisms.

The physical control of the invention preferably comprises adopting a physical device such as a black light lamp, a vibration frequency type insecticidal lamp, a color light plate and the like to trap and kill lepidoptera and homoptera pests.

The pesticides used for the medicament control according to the invention should preferably meet the regulations of NY/T1276 and GB/T8321 (all parts), and the pesticide varieties in tables 1 and 2 are forbidden to be used; the preparation method has the advantages that the preparation method is reasonably mixed, alternately uses different action mechanisms or medicines with negative interaction resistance, and overcomes and delays the generation and development of the drug resistance of the plant diseases and insect pests; the safe drainage period is 5 d-7 d.

TABLE 1 production of prohibited pesticide species

Table 2 inhibits use _A Comprises _{Label (C)} Pesticide of the following composition

Numbering device	Chinese common name	English generic name	Remarks
				1	Fenvalerate (fenvalerate)	fenvalerate	Containing a mixing agent
2	Butyryl hydrazine (Bi Jiu)	daminozide	Containing a mixing agent
				3	Chlorpyrifos (chlorpyrifos)	ChlorpyrifosStandard	Containing a mixing agent
4	Triazophos	ThreeTriazophos	Containing a mixing agent
				5	Flurobendiamide	Flubendiamide	Containing a mixing agent

Based on the agent control strategy of the present invention, for the main diseases, an example will now be described:

(1) Rice blast, according to GB/T15790, when the central mass of rice blast appears, every 667m ² Using tricyclazole 20 g-25 g or isoprothiolane 28 g-40 g or Fuji No. 75 ml-100 ml of mixed water 50kg spray control.

(2) Rice sheath blight disease, according to GB/T15791 specification, when the cluster incidence rate is 15% -20% at the tillering stage and 30% or more at the booting stage, every 667m ² 10 g-12.5 g of jinggangmycin is sprayed for 1-2 times by adding 50kg of water, and no pesticide can be applied below the index.

(3) Bacterial leaf blight every 667m in early stage ² Spraying 30-40 g of bismerthiazol with 50kg of water for prevention and control; especially after disasters such as strong wind, heavy rain, flood and the like, the rice leaves are damaged, and the medicaments are sprayed in time to prevent outbreak of illness.

(4) Seed soaking with dithiocyano methane or prochloraz resisting solution for treating bakanae disease.

(5) False smut of rice, each 667m in middle and late pregnancy ² 10 g-12.5 g of jinggangmycin and 50kg of water are added to spray the spike.

The following description is made for the control of main insect pests:

(1) According to the regulations of GB/T15792 and NY/T59, in the peak period of rice seedling withering, 36 g-45 g of dimehypo or 45 g-55 g of monosultap or 20g of triazophos is mixed with 50kg of water for spraying every 667m < 2 >, but dimehypo is not suitable for silkworm mulberry cultivation areas.

(2) The tryporyza incertulas can be mastered in the primary hatching period of the carthami's eggs according to the insect condition forecast, and each 667m ² The field with the egg mass generation amount of more than 50 blocks is used for preventing and treating the chemical, and the chemical is similar to that of Chilo suppressalis.

(3) The rice leaf roller is used for grasping the full-growth period (the early leaf rolling period) of the 1-and 2-year larvae of the main pest generation according to the specification of GB/T15793. When the tillering stage hundred-bush larvae are 65-85 heads and the booting stage is 40-60 heads or more, the pesticide control is carried out, and the pesticide is the double pesticide and the monosultap; in addition, 32g to 40g of chlorpyrifos can be mixed with 50kg of water to spray the middle and upper parts of rice plants.

(4) The rice planthoppers, according to the specification of GB/T15794, when the hundred clumps of insects reach 1500-2000 heads, each 667m ² 50kg of water is added with 7g to 10g of buprofezin or 1.5g to 2g of imidacloprid, and the mixture is sprayed to the middle and lower parts of rice plants.

(5) When rice thrips have leaf tip rolling rate over 10% and hundred plant worms amount of 300-500, spraying 50kg water with 27-36 g of dimehypo or 1.5-2 g of carbosulfan or imidacloprid.

For weed control, the following description is made:

weed control in seedling field of a, 0 d-10 d after sowing, each 667m ² Spraying 100 g-125 g of the cartap emulsifiable concentrate or 30g of butachlor with 30kg of water.

b, controlling weeds in Honda, and after transplanting, controlling weeds for 5-10 days, wherein each time 667m ² 100 g-125 g or Tian Caoguang g-30 g of Hecaodan emulsifiable concentrate is mixed with chemical fertilizer or 30kg of fine soil for broadcasting.

The method of the present invention preferably further comprises harvesting, transportation, storage and byproduct handling. During harvesting, threshing and grain sunning should preferably not be performed on roads, asphalt pavement and places with serious dust pollution. The transportation tool is ensured to be clean, dry and have rainproof facilities during transportation, and the transportation tool is not mixed with toxic, harmful, corrosive and odorous articles. When in storage, the materials are selected to be stored in places protected from light, normal temperature, dry and moisture-proof facilities. The storage facilities should be clean, dry, ventilated, pest-free and squirrel-free. It should not be mixed with toxic, harmful, corrosive, moldy, damp and odorous articles. If the warehouse is disinfected and fumigated, the used medicament should accord with national regulations on food sanitation and safety. The byproduct treatment of the invention meets the environmental protection requirements related to the government of the Hainan province. Advocate straw returning and rice chaff rice cropping; should not be incinerated, messy to stack, discarded and pollute the environment.

For further explanation of the present invention, the following describes in detail a cultivation method for Hainan rice variety provided by the present invention in connection with examples, but they should not be construed as limiting the scope of the present invention.

Example 1

Planting varieties of Haixiu No. 9, hainong Red No. 1, haifeng Black Oryza Glutinosa No. 2 and the like in the Wuzhishan city Mao Yangzhen, baisha county and the like.

The planting method is thin planting of transplanted rice; the seed sowing quantity is 667m ² 3 kg-4 kg;

the thin planting comprises the following steps: early and late riceThe planting density is 667m ² 2 ten thousand points, 3 to 4 points per point.

When transplanting to dilution, planting by adopting a wide row and narrow plant method; the wide row narrow plants comprise early and late rice with row spacing of 25.0cm and plant spacing of 16.7cm when transplanting;

fertilizing according to soil quality, wherein the organic fertilizer accounts for more than 30% of the total fertilizing amount, and the fertilizing amount of nitrogen, phosphorus and potassium is N:P ₂ O ₅ ∶K ₂ O is 1:0.5:1. When the soil is of general quality, applying base fertilizer and surface fertilizer, each 667m ² The applied base fertilizer comprises the steps of mixing 400 kg-500 kg of organic fertilizer with 30kg of calcium superphosphate for retting; the fertilizer comprises urea, and the dosage of the urea is 667m ² 5kg; applying back green fertilizer 4-5 d after transplanting, applying tillering-promoting fertilizer 10d after transplanting, applying grain-increasing fertilizer in the II stage Shi Zhuangbao of seedling and young spike differentiation after sunning, and applying fruiting-promoting fertilizer after spike alignment. If the melon vegetables are planted in the previous season, the fertilizer can not be applied;

the shallow water layer is kept for 3-5 cm in the turning green period, 2-3 cm is irrigated in a wetting mode in the tillering period, the field is exposed and sunned when the number of seedlings reaches 80% -90% of the number of spikes, and light sunning is carried out for 5-7 days for a plurality of times to control ineffective tillers and promote root system downward pricking growth and stalk strengthening and plant strengthening. Irrigation is carried out after the spike differentiation, and a shallow water layer is kept until the spike heading stage. Intermittent irrigation (irrigation of a water layer of 3-5 cm when the field is anhydrous) in the mature period of grouting, and alternation of dry and wet. Water was cut off around 7d before harvesting.

By adopting the method, diseases are fewer. Because of the high quality rice, insects are more.

When pest control is carried out, the plant protection policy of 'pre-prevention is mainly implemented, the control is integrated', and measures of 'agricultural control, physical control, chemical control' and the like are comprehensively applied from the stability of the rice field ecological system, so that the occurrence and hazard of pests are controlled.

The agricultural control preferably comprises periodic rotation of rice varieties, maintains variety resistance and reduces the occurrence of plant diseases and insect pests; and adopting reasonable cultivation system, rotation stubble-changing, rice and duck breeding and other agronomic measures to reduce the occurrence of harmful organisms.

The physical control preferably comprises adopting a physical device such as a black light lamp, a vibration frequency type insecticidal lamp, a color light plate and the like to trap and kill lepidoptera and homoptera pests.

Chemical control includes the following:

(1) According to the regulations of GB/T15792 and NY/T59, water is added into the rice stem to spray the rice stem for every 667m < 2 > at the peak of the sheath blight of rice seedling, wherein the water is added with 36 g-45 g of dimehypo or 45 g-55 g of monosultap or 20g of triazophos for 50 kg.

(2) The tryporyza incertulas can be mastered in the primary hatching period of the carthami's eggs according to the insect condition forecast, and each 667m ² The field with the egg mass generation amount of more than 50 blocks is used for preventing and treating the chemical, and the chemical is similar to that of Chilo suppressalis.

(3) The rice leaf roller is used for grasping the full-growth period (the early leaf rolling period) of the 1-and 2-year larvae of the main pest generation according to the specification of GB/T15793. When the tillering stage hundred-bush larvae are 65-85 heads and the booting stage is 40-60 heads or more, the pesticide control is carried out, and the pesticide is the double pesticide and the monosultap; in addition, 32g to 40g of chlorpyrifos can be mixed with 50kg of water to spray the middle and upper parts of rice plants.

(4) According to the specification of GB/T15794, when the hundred-pest amount reaches 1500-2000, 50kg of water is added into 7-10 g of buprofezin or 1.5-2 g of imidacloprid for each 667m < 2 >, and the rice planthopper is sprayed to the middle and lower parts of rice plants.

(5) When rice thrips have leaf tip rolling rate over 10% and hundred plant worms amount of 300-500, spraying 50kg water with 27-36 g of dimehypo or 1.5-2 g of carbosulfan or imidacloprid.

The economic benefit is increased, and the agricultural measures such as selection of high-quality disease-resistant varieties, reasonable cultivation system, rotation stubble-changing, rice and duck planting and breeding combination and the like are mainly reflected, so that the occurrence of harmful organisms is reduced, and the chemical control medicament and the manual pesticide spraying cost are reduced.

In addition, because the application of pesticides and fertilizers is reduced, the selling price of the rice is higher, the price of the planted rice is 10-15 yuan, and the price of the common rice is only 2.5-3 yuan, compared with the price of the common rice, the economic benefit is greatly increased.

Although the foregoing embodiments have been described in some, but not all, embodiments of the invention, it should be understood that other embodiments may be devised in accordance with the present embodiments without departing from the spirit and scope of the invention.

Claims (9)

1. The matched cultivation method of the Hainan rice variety is characterized by comprising the following steps of: (1) Selecting a rice variety or variety combination with strong resistance for thin planting;

(2) The organic fertilizer is combined with the inorganic fertilizer during fertilization; the shallow water layer is kept in the green-turning period during irrigation, the wet irrigation is carried out in the tillering period, the field exposure and the field sunning are started when the number of seedlings reaches 80% -90% of the number of spikes, the shallow water layer is irrigated after the spikes are differentiated and kept to the heading and flowering period, the intermittent irrigation in the grouting mature period and the water cut-off before harvesting are alternated in a dry-wet manner;

(3) The method for controlling the harmful organisms comprises agricultural control, biological control, physical control and medicament control.

2. The method according to claim 1, wherein the rice variety in step (1) comprises a high-quality, high-yield and high-resistance rice variety successfully demonstrated by national approval or Hainan approval or in Hainan province, and the seed quality meets the requirements of GB 4404.1.

3. The companion cultivation method of claim 1 or 2, wherein the thin planting of step (1) comprises thin planting of direct-seeded rice and thin planting of transplanted rice;

the seed sowing quantity of the direct seeding rice thin planting is 667m ² 3 kg～4kg；

The thin transplanting of the transplanted rice comprises the following steps: the planting density of early and late rice is 667m ² 2 ten thousand points, each point is 3 to 4 points; single cropping rice of 667m ² 1.2 to 1.7 ten thousand holes, 3 to 4 holes per hole of conventional rice and 1 to 2 holes per hybrid rice.

4. A mating cultivation method according to claim 3, wherein wide row narrow plants or wide and narrow row planting is adopted when transplanting to dilution is carried out;

the wide row narrow plants comprise early and late rice with row spacing of 25.0cm and plant spacing of 15 cm-16.7 cm when transplanting;

the wide-narrow row planting comprises a wide row of 33.3cm and a narrow row of 16.7cm, and the plant spacing is 15 cm-16.7 cm during transplanting.

5. The method according to claim 1, wherein the step (2) comprises applying fertilizer according to soil property, wherein the organic fertilizer is 30% or more of total fertilizer application amount, and the fertilizer application mass of nitrogen, phosphorus and potassium is N:P ₂ O ₅ ∶K ₂ O is 1:0.5:1.

6. The method according to claim 5, wherein the fertilizer is not applied when soil is fertile or the melon is planted in the previous season;

when the soil is of general quality, applying base fertilizer and surface fertilizer, each 667m ² The applied base fertilizer comprises the steps of mixing 400 kg-500 kg of organic fertilizer with 30kg of calcium superphosphate for retting; the fertilizer comprises urea, and the dosage of the urea is 667m ² 5kg; applying back green fertilizer 4-5 d after transplanting, applying tillering-promoting fertilizer 10d after transplanting, applying grain-increasing fertilizer in the II stage Shi Zhuangbao of seedling and young spike differentiation after sunning, and applying fruiting-promoting fertilizer after spike alignment.

7. The method according to claim 6, wherein the fertilizer for returning green comprises per 667m ² Shi Niaosu 10kg;

the said tillering-promoting fertilizer includes every 667m ² Applying 7.5kg of urea and 7.5kg of compound fertilizer respectively;

the bud-strengthening and grain-increasing fertilizer comprises every 667m ² Shi Lvhua Potassium 15kg;

the ripening fertilizer comprises a grain size of 667m ² Spraying an aqueous solution of potassium dihydrogen phosphate with the mass concentration of 0.3 percent.

8. The method according to claim 1, wherein the pesticide used in the control of the chemical agent in the step (3) meets the regulations of NY/T1276 and GB/T8321.

9. The companion cultivation method of claim 1 further comprising harvesting, shipping, storage and byproduct handling.