CN111053008A - Method for planting ratoon rice in coastal region - Google Patents
Method for planting ratoon rice in coastal region Download PDFInfo
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- CN111053008A CN111053008A CN202010009559.6A CN202010009559A CN111053008A CN 111053008 A CN111053008 A CN 111053008A CN 202010009559 A CN202010009559 A CN 202010009559A CN 111053008 A CN111053008 A CN 111053008A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
- A01G22/22—Rice
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
Abstract
The invention relates to a method for planting regenerated rice in coastal areas, which comprises the steps of selecting a hybrid long-grained nonglutinous rice variety with early maturity, high yield, high quality, good resistance and strong regeneration capacity, accelerating germination after disinfection of seeds, sowing in the middle and the last ten days of 4 months, turning over the land before sowing, applying a compound fertilizer, establishing a PVC film shed after sowing for heat preservation and moisture preservation, planting after seedlings grow to three leaves and one heart, paying attention to moisture and fertilizer management after planting, performing weed and insect pest control, and harvesting when the first season rice enters a yellow maturity period before the middle and the last ten days of 8 months, wherein rice stumps are 30-40 cm high during harvesting; after harvesting, irrigating 3-5cm of water into the field, applying urea, spraying with 1000 times of 3% gibberellic acid solution, intermittently watering, observing seedlings, applying fertilizer, and harvesting when the field is completely ripe. The method solves the problems of serious rice and wheat crop rotation crop contradiction and low wheat planting benefit in coastal areas, has less investment and high yield, ensures high and stable yield of first season rice and ratoon rice and has obvious economic benefit.
Description
Technical Field
The invention relates to a method for planting ratoon rice in coastal areas, belonging to the technical field of rice planting.
Background
Jiangsu province is one of main rice and wheat crop rotation production areas in China, rice and wheat crop rotation refers to a planting mode for planting wheat immediately after rice is harvested, in recent years, continuous rainy days increase during rice maturity in Jiangsu coastal areas, rice harvesting is late, later-stubble wheat sowing time is prolonged, rotten ploughing and rotten seeds are caused, rice and wheat crop rotation benefits are influenced, the enthusiasm of farmers for wheat production is reduced year by year, and the phenomenon of throwing waste field blocks in winter is serious.
The secondary rice has the advantages of low cost, excellent rice quality, no pollution and the like due to the characteristics of less fertilizer application and no pesticide application, has large market potential, and obviously improves the overall production benefit compared with the traditional rice and wheat rotation. However, the existing ratooned rice is mostly limited to directly utilize the high-position bud regeneration of rice stakes in the field, and the characters of the ratooned rice directly grown from the rice stakes, such as plant height, tillering, spike length, grain number and the like, all slide down to a certain degree compared with the first season rice, so that the average yield level is not high, and the yield is unstable.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a method for planting ratoon rice in coastal areas.
Technical scheme
A method for planting regenerated rice in coastal areas comprises the following steps:
(1) variety selection: selecting a hybrid indica rice variety with early maturity, high yield, high quality, good resistance and strong regeneration capacity;
(2) seed treatment: preparing seeds according to the seed consumption of 1.5 kg-1.75 kg per mu, tedding the seeds for 1 day, sterilizing and accelerating germination;
(3) sowing: sowing in the middle and last ten days of 4 months, plowing the land 20 days before sowing, and sowing 10 days before sowing according to 10kg/667m2Applying compound fertilizer, watering and turning over, ditching and making a compartment after muddy water is deposited, establishing a PVC film shed for heat preservation and moisture preservation after sowing, and managing a conventional seedbed;
(4) seedling planting: planting when the seedlings grow to three leaves and one heart, deeply turning over the field before planting, and then soaking in water for 2 d; each 667m2Planting 1.2-1.4 ten thousand holes; after the cultivation, attention is paid to water management and fertilizer management, and weed and insect pest control is carried out;
(5) harvesting first season rice: harvesting the first season rice in the yellow ripe period before the middle and last ten days of 8 months, wherein the stubble height of a rice pile is 30-40 cm during harvesting; irrigating 3-5cm of water into the field after harvesting every 667m2Applying 5 kg-6 kg of urea, spraying with 1000 times of 3% gibberellic acid solution, intermittently adding water, drying, wetting, and nourishing roots and leaves;
(6) fertilizer operation: looking at seedlings and applying fertilizer, and when the leaf color in the field is faded, every 667m2Applying 5kg of urea; each 667m of the heading period2Adding 2g of potassium dihydrogen phosphate 100-150 g of potassium biphosphate into 50kg of water for spraying;
(7) harvesting the rice again: harvesting when the field is completely ripe.
Further, in the step (2), the sterilization method comprises the following steps: soaking the seeds in 1000 times of 25 percent of phenamacril solution for 2 d.
Further, in the step (2), the germination accelerating method comprises the following steps: the seeds are put in an environment of 30 ℃ for accelerating germination and breaking breast, the seeds are often turned over during accelerating germination, water is sprayed to keep the seeds in a moist but not flooded state, the temperature is reduced to 20 ℃ when the seeds sprout for 1mm-2mm, and the seeds can be sown after being aired to sprout for 6 hours.
Further, in the step (4), the planting row spacing is 30cm, and the plant spacing is 16-18 cm.
Further, in the step (4), the moisture management is: after planting, timely irrigating 4-5 cm for protecting live seedlings, and after naturally falling to the dry, irrigating shallow water for 3cm, avoiding long-term deep water preservation and causing root rot and seedling rot; in the tillering stage, shallow water is used for frequent irrigation, the irrigation depth is 3cm, water is fed after the water naturally falls off, and the steps are repeated to achieve water-air coordination; after rehydration, establishing a water layer of 5cm to ensure glumous flower differentiation and heading and flowering; intermittently watering in a grouting and setting period, drying, wetting and moisturizing, cultivating roots and protecting leaves, and aging; water was cut off 7 days before harvesting.
Further, in the step (4), the fertilizer management comprises: 5d after planting and every 667m2Applying 7 kg-8 kg of urea, applying more lean fields and less fat fields; applying spike fertilizer according to the seedling condition after rehydration, applying less nitrogen fertilizer and applying potassium fertilizer to fields with green leaves and slightly draped leaves after rehydration; applying chlorine in the stage of 2-3 ear differentiationDissolving 5kg of potassium, applying 3 kg-4 kg of urea for flower retention in the stage of ear differentiation of 4-5; in the field with difficulty in re-greening leaf color and insufficient population after re-watering, each 667m of the field is pulled out at the beginning2Applying 5 kg-6 kg of urea for promoting flower growth, and applying 3 kg-4 kg of urea for flower retention in the 4-5 stage of ear differentiation; boron fertilizer is additionally applied in the heading and flowering stages of the rice, so that the maturing rate is improved.
The invention has the beneficial effects that: the invention provides a method for planting ratoon rice in coastal areas, which comprises the following steps:
1) the method of the invention is beneficial to realizing high-quality and stable yield of first season rice and regeneration season rice
The method selects hybrid indica rice varieties with high yield, stable yield, high quality and strong regeneration capacity in coastal areas according to climate and soil conditions in the coastal areas and performs corresponding fertilizer and water operation and pest control, and the first season rice can be produced with high yield, stable yield and high quality; the regenerated season rice has less fertilizer application, no pesticide application, uniform growth, low production cost and higher commodity value, and the yield can reach one third of that of the first season rice, and the method belongs to green planting, and the quality of the regenerated season rice is obviously improved compared with that of the first season rice.
2) The method of the invention is beneficial to improving the production benefit
The method is provided aiming at serious rice and wheat crop rotation crop contradiction and extremely low wheat planting benefit in coastal areas, the production cost of the ratooning season rice is low, the rice has the characteristics of high quality and green, the input is less, the output is high, the comprehensive benefit of the first season rice and the ratooning season rice is obviously higher than that of the rice and wheat crop rotation, the degree of freedom of the latter crop selection is high, and the method has a positive effect on structural reform of regional agricultural supply sides.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
A method for planting regenerated rice in coastal areas comprises the following steps:
(1) variety selection: selecting early-maturing, high-yield, high-quality and high-regeneration-capacity hybrid indica rice varieties (see table 1 specifically);
(2) seed treatment: preparing seeds according to the seed consumption of 1.6kg per mu, tedding the seeds for 1d, then sterilizing (soaking the seeds in 1000-fold solution of 25% of phenamacril for 2d), then accelerating germination (placing the seeds in an environment with the temperature of 30 ℃ for accelerating germination and breaking breast, frequently turning over the seeds during accelerating germination, spraying water to keep the seeds in a moist but not flooded state, reducing the temperature to 20 ℃ when the seeds grow to 1mm-2mm, airing the seeds for 6h, and then sowing);
(3) sowing: sowing seeds in 2016 year, 4 months and 20 days, plowing the land 20 days before sowing, and sowing seeds 10 days before sowing according to the ratio of 10kg/667m2Applying compound fertilizer, watering and turning, ditching to form a compartment (the compartment width is 1.3m, the trench width is 0.3m and the trench depth is 0.1m) after muddy water is deposited, establishing a PVC film shed for heat preservation and moisture preservation after seeding, and managing a conventional seedbed;
(4) seedling planting: planting when the seedlings grow to three leaves and one heart, deeply turning the field before planting, carrying out rotary tillage with the depth of 18-20 cm, and then soaking in water for 2 d; each 667m2Planting 1.2-1.4 ten thousand holes, wherein the planting row spacing is 30cm, and the plant spacing is 16-18 cm; after the cultivation, attention is paid to water management and fertilizer management, and weed and insect pest control is carried out;
the water content management is as follows: after planting, timely irrigating 4-5 cm for protecting live seedlings, and after naturally falling to the dry, irrigating shallow water for 3cm, avoiding long-term deep water preservation and causing root rot and seedling rot; in the tillering stage, shallow water is used for frequent irrigation, the irrigation depth is 3cm, water is fed after the water naturally falls off, and the steps are repeated to achieve water-air coordination; after rehydration, establishing a water layer of 5cm to ensure glumous flower differentiation and heading and flowering; intermittently watering in a grouting and setting period, drying, wetting and moisturizing, cultivating roots and protecting leaves, and aging; cutting off water 7d before harvesting;
the fertilizer management comprises the following steps: 5d after planting and every 667m2Applying 7 kg-8 kg of urea, applying more lean fields and less fat fields; applying spike fertilizer according to the seedling condition after rehydration, applying less nitrogen fertilizer and applying potassium fertilizer to fields with green leaves and slightly draped leaves after rehydration; applying 5kg of potassium oxide in the stage of ear differentiation 2-3, and applying 3 kg-4 kg of urea in the stage of ear differentiation 4-5 for flower retention; in the field with difficulty in re-greening leaf color and insufficient population after re-watering, each 667m of the field is pulled out at the beginning2Applying 5 kg-6 kg of urea for promoting flower growth, and applying 3 kg-4 kg of urea for flower retention in the 4-5 stage of ear differentiation; boron fertilizer is additionally applied in the heading and flowering stages of the rice, so that the maturing rate is improved;
(5) harvesting first season rice: harvesting the first season rice in the yellow ripe period 20 days before 8 monthsThe stubble height of the rice stubble is 30 cm-40 cm; irrigating 3-5cm of water into the field after harvesting every 667m2Applying 5 kg-6 kg of urea, spraying with 1000 times of 3% gibberellic acid solution, intermittently adding water, drying, wetting, and nourishing roots and leaves;
(6) fertilizer operation: looking at seedlings and applying fertilizer, and when the leaf color in the field is faded, every 667m2Applying 5kg of urea; each 667m of the heading period2Adding 2g of potassium dihydrogen phosphate 100-150 g of potassium biphosphate into 50kg of water for spraying;
(7) harvesting the rice again: harvesting when the field is completely ripe.
In this example, 16 varieties were selected for planting test, and data of growth period, lodging resistance, sheath blight resistance, and regeneration ability were counted, respectively, and the results are shown in table 1:
TABLE 16 test conditions of 16 varieties in 12016 years
Note: the regeneration force is the ratio of the effective ears of the regeneration season to the effective ears of the first season rice, and the non-statistical regeneration season maturity is lower than 0.5.
According to the production requirements of the ratoon rice, the varieties of which the first season rice is mature 20 days before 8 months, the regeneration season is mature 30 days before 10 months, the lodging area is not more than 5 percent, the banded sclerotial blight is expressed to be light, and the regenerative power is more than 0.8 are selected to enter a multi-year stability test. According to the safety test results of 16 varieties, stability tests are carried out on Guangliangyou 931, Xingliangyou 223, Huishiyianyou 7408 and Guangliangyou 616 within two years, the test contents comprise the contents of the growth period, the yield characters, the final yield, the rice quality and the like of first season rice and regenerated season rice, and the test results are shown in tables 2 and 3:
table 22017, 2018 two year growth and yield stability tests
Table 32017, 2018 two-year quality stability test
As can be seen from tables 2 and 3, the first season rice and the regenerated season rice planted by the method have high and stable yield, excellent quality and remarkable economic benefit.
Claims (6)
1. A method for planting ratoon rice in coastal areas is characterized by comprising the following steps:
(1) variety selection: selecting a hybrid indica rice variety with early maturity, high yield, high quality, good resistance and strong regeneration capacity;
(2) seed treatment: preparing seeds according to the seed consumption of 1.5 kg-1.75 kg per mu, tedding the seeds for 1 day, sterilizing and accelerating germination;
(3) sowing: sowing in the middle and last ten days of 4 months, plowing the land 20 days before sowing, and sowing 10 days before sowing according to 10kg/667m2Applying compound fertilizer, watering and turning over, ditching and making a compartment after muddy water is deposited, establishing a PVC film shed for heat preservation and moisture preservation after sowing, and managing a conventional seedbed;
(4) seedling planting: planting when the seedlings grow to three leaves and one heart, deeply turning over the field before planting, and then soaking in water for 2 d; each 667m2Planting 1.2-1.4 ten thousand holes; after the cultivation, attention is paid to water management and fertilizer management, and weed and insect pest control is carried out;
(5) harvesting first season rice: harvesting the first season rice in the yellow ripe period before the middle and last ten days of 8 months, wherein the stubble height of a rice pile is 30-40 cm during harvesting; irrigating 3-5cm of water into the field after harvesting every 667m2Applying 5 kg-6 kg of urea, spraying with 1000 times of 3% gibberellic acid solution, intermittently adding water, drying, wetting, and nourishing roots and leaves;
(6) fertilizer operation: seedling and fertilizer application in fieldEvery 667m when the leaf color is dark green2Applying 5kg of urea; each 667m of the heading period2Adding 2g of potassium dihydrogen phosphate 100-150 g of potassium biphosphate into 50kg of water for spraying;
(7) harvesting the rice again: harvesting when the field is completely ripe.
2. The method for planting ratoon rice in coastal areas as claimed in claim 1, wherein in the step (2), the disinfection method comprises the following steps: soaking the seeds in 1000 times of 25 percent of phenamacril solution for 2 d.
3. The method for planting ratoon rice in coastal areas as claimed in claim 1, wherein in step (2), the germination accelerating method comprises: the seeds are put in an environment of 30 ℃ for accelerating germination and breaking breast, the seeds are often turned over during accelerating germination, water is sprayed to keep the seeds in a moist but not flooded state, the temperature is reduced to 20 ℃ when the seeds sprout for 1mm-2mm, and the seeds can be sown after being aired to sprout for 6 hours.
4. The method for planting ratoon rice in coastal areas according to claim 1, wherein in the step (4), the row spacing is 30cm, and the plant spacing is 16cm to 18 cm.
5. The method for planting ratoon rice in coastal areas according to claim 1, wherein in the step (4), the water content is managed by: after planting, timely irrigating 4-5 cm for protecting live seedlings, and after naturally falling to the dry, irrigating shallow water for 3cm, avoiding long-term deep water preservation and causing root rot and seedling rot; in the tillering stage, shallow water is used for frequent irrigation, the irrigation depth is 3cm, water is fed after the water naturally falls off, and the steps are repeated to achieve water-air coordination; after rehydration, establishing a water layer of 5cm to ensure glumous flower differentiation and heading and flowering; intermittently watering in a grouting and setting period, drying, wetting and moisturizing, cultivating roots and protecting leaves, and aging; water was cut off 7 days before harvesting.
6. The method for planting ratoon rice in coastal areas according to any one of claims 1 to 5, wherein in the step (4), the fertilizer management is as follows: 5d after planting and every 667m2Applying 7 kg-8 kg of urea, applying more lean fields and less fat fields; applying spike fertilizer according to seedling condition after rehydration and addingSlightly covering the water-back green leaves in the field, applying little nitrogen fertilizer and applying potassium fertilizer; applying 5kg of potassium chloride in the stage of ear differentiation 2-3, and applying 3 kg-4 kg of urea in the stage of ear differentiation 4-5 for flower retention; in the field with difficulty in re-greening leaf color and insufficient population after re-watering, each 667m of the field is pulled out at the beginning2Applying 5 kg-6 kg of urea for promoting flower growth, and applying 3 kg-4 kg of urea for flower retention in the 4-5 stage of ear differentiation; boron fertilizer is additionally applied in the heading and flowering stages of the rice, so that the maturing rate is improved.
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