What are the cultivation points of Y Liangyou 1928?

In Hunan Province, medium rice planting, sowing in April, the amount of seeds per mu of field is closed, and the germinated seeds are soaked for 15 minutes with gramoxybutrazol to 1 kg of water per kilogram of germinated seeds, and then sown after draining. The seedling age is not more than 30 days, the planting density is 20 cm to 26 cm, and each cuttings are 2 grain seedlings. The application ratio of nitrogen, phosphorus and potassium fertilizers is as follows: :

Advisable. In hilly and mountainous areas, 50 kg of compound fertilizer of 45% compound fertilizer per mu was applied, 35 kg was applied in plain lake areas, 10 kg of urea was applied per mu 5 days after transplanting to promote tillering, and 10 kg of potassium fertilizer was applied per mu before spike differentiation. Do not cut off the water too early in the later stage, so as not to affect the fruit setting and grain enrichment.

Special attention should be paid to the prevention and control of pests and diseases such as rice koji disease.

Seedling raising: timely and early sowing, the sowing amount per mu of seedling field is 6 7 kg, and the amount of seed per mu in the field is kilogram, and the strong seedlings are cultivated. Transplanting:

Transplant in a timely manner, and plant double-cropping early rice in South China, planting 10,000 holes and 78,000 basic seedlings per mu. In the middle and lower reaches of the Yangtze River, a season of medium rice is planted, and 10,000 holes and 67,000 basic seedlings are planted per mu. Fertilizer and water management:

It is suitable for cultivation at the upper medium fertility level, and the fertilization is mainly basal fertilizer and organic fertilizer, with heavy application in the early stage, early top dressing, and seedling fertilization in the later stage. In the management of water slurry, it is necessary to achieve shallow water in the early stage, light shelving in the middle stage, and dry, dry and wet irrigation in the later stage, and the water should not be cut off too early. Pest Control:

Pay attention to the timely prevention and control of rice blast, white leaf blight, rice planthopper and other pests and diseases.

Seedling raising: do a good job of seed disinfection, use kilograms of seeds per mu of field, sow seeds in a timely manner, and cultivate multi-tillering and strong seedlings.

Transplanting: The seedling age is not more than 25 days, the planting size is 20 cm, 30 cm or 20 cm, and 2 seeds and seedlings are planted in each hole.

Fertilizer and water management: balanced application of nitrogen, phosphorus and potassium fertilizer, application of sufficient basal fertilizer, early application of top dressing, and application of 10 kg of urea per mu to promote tillering 3 to 5 days after transplanting; Skillfully applied ear fertilizer, 10 kg of potassium fertilizer and 4 kg of urea per mu before the differentiation of young panicles. Water management should be full of water, moist and strong seeds, and avoid premature water cut-off in the later stage.

Pest control: pay attention to timely prevention and control of rice blast, white leaf blight, sheath blight, borer, brown planthopper, rice koji disease and other pests and diseases.

Y Liangyou 9918 - National Examination of Rice 2011015

Y Liangyou 9918 is an indica two-line hybrid rice variety bred by Hunan Tiansheng Biotechnology Co., Ltd. and Hunan Hybrid Rice Research Center with Y58S (female parent) and R928 (male parent). It was declared by Hunan Tiansheng Biotechnology Co., Ltd., and passed the examination and approval of the National Crop Variety Examination and Approval Committee in 2011, and the approval number was the national rice 2011015.

First, timely sowing: Hunan rice should be sown before April 20, a season of late rice sown in mid-May, all over the country can choose the sowing period according to local climatic conditions and planting habits, and the amount of seeds per mu of field is kilograms.

2. Soaking with pesticides: After germination and before sowing, each kilogram of germinated seeds should be soaked with gramdobutrazol with one kilogram of water for about 15 minutes, or mixed with Y Liangyou 9918 special seed dressing agent, and then sown after drying.

3. Plains or fields with higher fertility levels and more vigorous growth should pay attention to lodging prevention, 5-7 days after transplanting, combined with tiller fertilizer, and apply paclobutrazol 120 grams per mu.

Fourth, reasonable density, insert basic seedlings, and control the seedling age within 30 days. Ten thousand acres are planted, and each grain is planted with two grains of seedlings.

5. Strengthen fertilizer and water management: advocate the use of high-efficiency compound fertilizer, increase the application of potassium fertilizer, general application of silicon fertilizer, intermittent irrigation throughout the process, nitrogen, phosphorus, potassium to: 1 is appropriate, 50 kg of base fertilizer per mu in hilly areas, 35 kg in plain lake areas, 5-7 days after transplanting, apply top dressing urea 10 kg per mu to promote early tillering, dry the field within 20 days, apply potassium fertilizer per mu 10 kg of urea kg when rewatering, and avoid water interruption too early in the later stage.

6. Pay attention to the prevention and control of pests and diseases, especially the prevention and control of rice blast: control rice blast at the seedling stage, the breaking stage and the full heading stage.

In Hunan Province, a season of late rice cultivation, sowing in late May, the sowing amount of seedlings per mu is 10 kg, the amount of seeds per mu is kilograms, and the seedling age is 30 days or the number of main stem leaves reaches 5-6 leaves. The planting density is 20 25 cm, 1-2 grain seedlings per seedling, 10,000 seedlings per mu, and 5-60,000 basic seedlings. Bottom fertilizer with 48% content (18% N, 18% K, 12% P) of compound fertilizer 50-40 kg as base fertilizer, 5-7 days after transplanting with 46% content of urea 5-8 kg as top dressing, in the seedling spikelet differentiation to 3-4 stage when the application of 46% content of urea 2-5 kg, and add 28% content of potassium chloride 25 kg mixed application, if the panicle differentiation, the seedling leaves dark green, do not fade, then only potassium fertilizer without adding nitrogen.

In the panicle blast area, the "Fuji No. 1" drug should be applied at the seedling stage and the breaking stage, and the effect is excellent.

In 2008, the average yield per mu of the provincial and regional trials was increased compared with the control of Liangyoupeijiu, which was extremely significant, and the average yield per mu of the 2009 test was increased compared with the control, which was extremely significant, and the average yield per mu of the two-year district test was increased compared with the control, and the daily yield was kilograms, which was higher than the control.

Y Liangyou 2 was formed by Hunan Hybrid Rice Research Center with Y58S as the female parent and Yuanhui 2 as the male parent. Among them, the male parent Yuanhui 2 was crossed with the excellent line BC3F1 of the early generation of R163 as the female parent and Shuhui 527 as the defeated male parent, and the excellent single plant was selected from the F2 population and bred by inbred for 5 generations. In 2011, it was approved by the Hunan Crop Examination and Approval Committee, and the approval number was Hunan Rice 2011020.

Growth period: in Hunan for a season of rice cultivation of the whole growth period of about 142 days, 4 years of cultivation demonstration performance, in Hunan Changsha Liuyang and other low-altitude areas for rice cultivation or a season of late rice cultivation sowing to mature growth period of about 130 days, 2 3 days longer than Y Liangyou 1.

Plant and leaf type: the height of the plant is about 120 cm, only 90 95 cm from the ground to the turn of the ear neck, and the center of gravity is low; The stem is stout, resistant to fertilizer and lodging, and has strong tillering ability; The plant shape is loose and moderate, the leaf bearing angle is small, the upper three leaves are straight, and the group is well ventilated and transmitted, showing the ideal plant leaf morphology of high canopy and short spike layer. The leaves are long, straight, narrow, concave and thick, and the photosynthetic efficiency is high.

Spike structure: large spike type, large spike with many grains, spike length of more than 30 cm, total number of grains per spike of 220, main spike can reach more than 400 grains, and 1000 grains weight of more than 26 grams. The threshing is good and unnatural threshing in the later stage.

Generally, there are about 170,000 effective spikes per mu, and the color is good in the later stage, and the seed setting rate is 85-92%.

Rice quality: roughness rate, polishing rate, rice rate, chalkiness grain rate, chalkiness, transparency grade 1, alkali elimination grade, gel consistency 90 mm, amylose content 15%.

Resistance: average leaf blast grade, panicle blast grade, comprehensive resistance index of rice blast, susceptible to rice blast, strong high temperature resistance, strong low temperature resistance. It has wide adaptability and is suitable for cultivation in different regions.

In Hunan to do rice cultivation is generally sown in mid-April, in Liuyang for a season of late rice cultivation generally in mid to late May sowing, per mu of field with a seed amount of kilograms, per mu of seedling field with a sowing amount of 8 kg, so that the seedling field is sparsely sown evenly, it is best to use floppy disk dry seedlings, dry seedlings have developed root system, strong tillering force, but pay attention to keep the moist state, apply weaning fertilizer and grafting fertilizer. Spraying paclobutrazol in the second leaf and one heart, the seedling stage should strengthen the control of rice planthopper, thrips and borer, and spray the prevention and control of rice planthopper every 5-7 days to effectively control the occurrence of "southern rice black streaked dwarf disease", and the seedling period is generally about 25 days. Wide row and narrow plant cultivation (20cm 30cm), more than 10,000 pockets per mu, 2-3 grain seedlings per pocket, and more than 80,000 basic seedlings.

Datian uses pure nitrogen 14kg standard, N-P-K ratio: 1. Generally, 40-50kg of more than 40% high-quality compound fertilizer is used as base fertilizer, and 5-7 days after insertion, 5kg of urea and 8kg of potassium chloride are applied per mu.

In the 2-3 stage of spikelet differentiation, 3-5kg of urea and 5kg of potassium chloride per mu should be applied in the field, and the field should pay attention to strengthening the comprehensive control and scientific management of diseases and pests, especially in recent years, with the continuous spread of the black streaked dwarf disease of rice in the south of the country, it is necessary to focus on strengthening the prevention and control of rice planthoppers in the seedling field and transplanting stage, so as to achieve the effect of "treating lice and dwarf, insects and diseases".