CN104920133A - Seedbed management method for one-season middle-season indica hybrid rice - Google Patents

Abstract

The present invention discloses a seedbed management method for one-season middle-season indica hybrid rice. The seedbed management method comprises the steps of: (1) for wetting seedlings, spraying with paclobutrazol during one-leaf one-core stage, wherein 150-200g of 15% paclobutrazol is dissolved in 100kg of water to prepare 300PPM-225PPM liquid medicine for spraying in each seedling field, and the water in a pipe keeps a seedling plate wet and soil venting; (2) for dry land seedlings, covering a thin film over the dry land seedlings, with the periphery of the thin film tightly pressed, covering a layer of straw or weeds over the film, and timely uncovering the cover and the thin film in the evening or morning after the seedlings emerge from the soil within 5-7 days, and after the film is uncovered and when the water on the bottom of a seedbed is dried, timely watering the seedbed; and (3) controlling plant diseases and insect pests, and manually eliminating weeds in a dry land seedling field. The seedbed management method disclosed by the present invention has the advantages of improving seedling quality, reducing pests and diseases and improving rice quality and yield.

Description

The seedbed management method of Xian hybrid rice in one season

Technical field

The present invention relates to a kind of type of seeding, especially the seedbed management method of Xian hybrid rice in the season.

Background technology

Hybrid rice (hybrid rice) refers to select two in heredity, have different, the rice varieties that their merit again can be complementary simultaneously, hybridizes, produces and have heterotic first generation crossbreed, for the production of, Here it is hybrid rice.Hybrid vigour is biosphere universal phenomenon, utilizes hybrid vigour raising crop yield and quality to be one of Main Achievements of modern agriculture science.

Hybrid vigour is the universal phenomenon of biosphere, utilizes hybrid vigour to be one of Main Achievements of modern agriculture science to improve the yield and quality of crops.Select two in heredity, have different, the rice varieties that simultaneously their merit again can be complementary, hybridizes, produces and have heterotic first generation crossbreed, for the production of, Here it is hybrid rice.

Paddy rice has obvious hybrid vigour phenomenon, and be mainly manifested in growth vigorous, well developed root system, big panicle many grains per panicle, the aspects such as strong stress resistance, therefore, utilize the hybrid vigour of paddy rice to be the hope that breeding man is dreamed of to increase substantially rice yield always.But, Genus Oryza self-pollinated plant, Pistil And Stamen raw in same grain husk is spent, because grain husk flower is very little, and every flower only ties a seed, therefore be difficult to produce a large amount of first generation by the method for artificial emasculation hybridization to mix mutation, so the hybrid vigour of paddy rice fails to be applied for a long time.

Summary of the invention

The technical problem to be solved in the present invention is to provide the seedbed management method of Xian hybrid rice in a kind of season.

The present invention is achieved through the following technical solutions.

A seedbed management method for Xian hybrid rice in one season, step comprises:

(1) water-raised seedling, spray paclobutrazol: 1 leaf 1 heart stage, every face rice seedling bed 150-200 gram 15% paclobutrazol, be watered 100 kilograms to be made into 300PPM-225PPM liquid and to spray, pipe water keeps seedling plate moistening, soil aeration, to 2 leaf 1 heart stages after broadcasting, the full ditch-water of fine day, overcast and rainy half ditch-water, after 2 leaf 1 hearts, to pour water upper seedling plate, and keep seedling plate 2-3 centimetres of shoaling layers, and apply fertilizer, front executing after ploughing, mu is executed the dung polluted water 20-30 become thoroughly decomposed and is carried on a shoulder pole, urea 2-3 kilogram is executed after carrying out again in furrow face, 2 leaf 1 heart stages, mu is executed urea 3-5 kilogram and is made wean fertilizer, before and after 5 leaf phases, mu executes urea 3-5 kilogram, grow more prosperous Shaoshi or do not execute, 3-5 days before pulling up seedlings, mu is executed urea 7-8 kilogram and is sent and transfer fertilizer,

(2) dry rice seedling, overlay film, film surrounding presses tight compacting, and add the coverings such as lid layer stalk or weeds, after 5-7 days rice shoots are all unearthed, between the lights or morning, open covering and film in time, after film is opened, wait water at the bottom of seedling bed to dry timely teeming water, meet rainy day timely epiphragma, rain stops taking off film in time, and every 10 square metres are watered with 0.5 kilogram of urea, 0.8 kilogram of superphosphate, evenly spray water with watering can, Shi Hou, drenches seedling with clear water;

(3) disease pest and weed control, dry rice seedling field weed is manually pulled out, water-raised seedling 1 leaf 1 heart stage to 3 leaf 1 heart stage, mu 20% benzyl third careless amine wetting powder 75g or 30% sweeps fluorine special missible oil 75-100 milliliter, be watered the face weed sprays of 30kg furrow, stripe virus disease is when rape, little wheat harvesting, and mu 48% Le Siben missible oil 70-90ml or 40% chlorpyrifos ec 100ml add 25% buprofezin wetting powder 50-60g, be watered 40-50kg spraying, mass treatment small brown rice planthopper; Seedling pest, leaf pest in find diseased plant namely choose control or sick leaf rate reaches 10% time, mu 75% tricyclazole wettable powder 30g, prevents and treats 1-2 times.

Beneficial effect of the present invention:

Can effectively improve hybrid rice seedling quality, alleviate the harm of disease worm, improve rice quality and output, and method is comparatively practical, the seedbed management for hybrid rice provides new thinking.

Embodiment

According to embodiment, the present invention is described in further detail below.

The present invention, a kind of seedbed management method of Xian hybrid rice in the season, step comprises:

(1) water-raised seedling, spray paclobutrazol: 1 leaf 1 heart stage, every face rice seedling bed 150-200 gram 15% paclobutrazol, be watered 100 kilograms to be made into 300PPM-225PPM liquid and to spray, pipe water keeps seedling plate moistening, soil aeration, to 2 leaf 1 heart stages after broadcasting, the full ditch-water of fine day, overcast and rainy half ditch-water, after 2 leaf 1 hearts, to pour water upper seedling plate, and keep seedling plate 2-3 centimetres of shoaling layers, and apply fertilizer, front executing after ploughing, mu is executed the dung polluted water 20-30 become thoroughly decomposed and is carried on a shoulder pole, urea 2-3 kilogram is executed after carrying out again in furrow face, 2 leaf 1 heart stages, mu is executed urea 3-5 kilogram and is made wean fertilizer, before and after 5 leaf phases, mu executes urea 3-5 kilogram, grow more prosperous Shaoshi or do not execute, 3-5 days before pulling up seedlings, mu is executed urea 7-8 kilogram and is sent and transfer fertilizer,

(2) dry rice seedling, overlay film, film surrounding presses tight compacting, and add the coverings such as lid layer stalk or weeds, after 5-7 days rice shoots are all unearthed, between the lights or morning, open covering and film in time, after film is opened, wait water at the bottom of seedling bed to dry timely teeming water, meet rainy day timely epiphragma, rain stops taking off film in time, and every 10 square metres are watered with 0.5 kilogram of urea, 0.8 kilogram of superphosphate, evenly spray water with watering can, Shi Hou, drenches seedling with clear water;

(3) disease pest and weed control, dry rice seedling field weed is manually pulled out, water-raised seedling 1 leaf 1 heart stage to 3 leaf 1 heart stage, mu 20% benzyl third careless amine wetting powder 75g or 30% sweeps fluorine special missible oil 75-100 milliliter, be watered the face weed sprays of 30kg furrow, stripe virus disease is when rape, little wheat harvesting, and mu 48% Le Siben missible oil 70-90ml or 40% chlorpyrifos ec 100ml add 25% buprofezin wetting powder 50-60g, be watered 40-50kg spraying, mass treatment small brown rice planthopper; Seedling pest, leaf pest in find diseased plant namely choose control or sick leaf rate reaches 10% time, mu 75% tricyclazole wettable powder 30g, prevents and treats 1-2 times.

The present invention, the seedbed management method of Xian hybrid rice in the season, can effectively improve hybrid rice seedling quality, and alleviate the harm of disease worm, improve rice quality and output, and method is comparatively practical, the seedbed management for hybrid rice provides new thinking.

Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to allow the personage being familiar with this art can understand content of the present invention and be implemented, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.

Claims (1)

1. the seedbed management method of Xian hybrid rice in the season, it is characterized in that, step comprises:

(1) water-raised seedling, spray paclobutrazol: 1 leaf 1 heart stage, every face rice seedling bed 150-200 gram 15% paclobutrazol, be watered 100 kilograms to be made into 300PPM-225PPM liquid and to spray, pipe water keeps seedling plate moistening, soil aeration, to 2 leaf 1 heart stages after broadcasting, the full ditch-water of fine day, overcast and rainy half ditch-water, after 2 leaf 1 hearts, to pour water upper seedling plate, and keep seedling plate 2-3 centimetres of shoaling layers, and apply fertilizer, front executing after ploughing, mu is executed the dung polluted water 20-30 become thoroughly decomposed and is carried on a shoulder pole, urea 2-3 kilogram is executed after carrying out again in furrow face, 2 leaf 1 heart stages, mu is executed urea 3-5 kilogram and is made wean fertilizer, before and after 5 leaf phases, mu executes urea 3-5 kilogram, grow more prosperous Shaoshi or do not execute, 3-5 days before pulling up seedlings, mu is executed urea 7-8 kilogram and is sent and transfer fertilizer,

(2) dry rice seedling, overlay film, film surrounding presses tight compacting, and add the coverings such as lid layer stalk or weeds, after 5-7 days rice shoots are all unearthed, between the lights or morning, open covering and film in time, after film is opened, wait water at the bottom of seedling bed to dry timely teeming water, meet rainy day timely epiphragma, rain stops taking off film in time, and every 10 square metres are watered with 0.5 kilogram of urea, 0.8 kilogram of superphosphate, evenly spray water with watering can, Shi Hou, drenches seedling with clear water;

(3) disease pest and weed control, dry rice seedling field weed is manually pulled out, water-raised seedling 1 leaf 1 heart stage to 3 leaf 1 heart stage, mu 20% benzyl third careless amine wetting powder 75g or 30% sweeps fluorine special missible oil 75-100 milliliter, be watered the face weed sprays of 30kg furrow, stripe virus disease is when rape, little wheat harvesting, and mu 48% Le Siben missible oil 70-90ml or 40% chlorpyrifos ec 100ml add 25% buprofezin wetting powder 50-60g, be watered 40-50kg spraying, mass treatment small brown rice planthopper; Seedling pest, leaf pest in find diseased plant namely choose control or sick leaf rate reaches 10% time, mu 75% tricyclazole wettable powder 30g, prevents and treats 1-2 times.