I. Main content introduction and technical indicators
The mountainous rice fields are high in altitude, low in temperature, especially slow in spring, and the time to return to green after transplanting is small, the tiller is less, the seedlings are weak, the effective ear is seriously insufficient, and the number of grains per pan is less, resulting in low yield per mu. . In 1998, the city arranged the rice mulch cover cultivation experiment in Emeishan City and Mabian County. The results showed that the seedlings used in dry cultivation were transplanted quickly after the transplanting, almost no returning period, and the highest seedlings could increase the film without cover. More than 50%, the effective ear of the mu increased by 15-20%, the grain number and seed setting rate of the ear increased by 5-10%, and the yield per mu increased by 65-110 kg, an increase of 15-30%.
Technical indicators: (1) High-yield combination of hybrid rice with medium or medium maturity and late maturity. (2) Seeding rate and sowing date: 1.3-1.5 kg, the sowing period is the same as that of the local dam area. (3) Using plastic floppy disk nutrient soil to add strong sputum agent to dry sputum, transplanting medium and small seedlings. (4) Datian once applied enough base fertilizer, and applied 15-20 tons of high-quality human and animal manure, 15 kg of urea, 25 kg of superphosphate, and 5 kg of potassium chloride. Daejeon opened the car at 1.9 meters and opened the gully. The width of the car was 1.6-1.65 meters, the width of the ditch was 0.25-0.30 meters, the ditch depth was 0.15-0.20 meters, 8 rows per box, and the nest was 0.13-0.16 meters. 1.75-2.16 million nests, each nest double seedlings. (5) Daejeon management does not need weeding, generally does not need topdressing. If it is found that there is de-fertilization in the later stage, it can be used for topdressing with 2-3 kg of urea and 50 times of liquid sprayed before and after the heading period. Disease prevention and control of pests are the same as ordinary cultivation. (6) Datian pipe water always maintains semi-ditch water from transplanting to milk ripening, water does not go to the car, and the milk begins to drain.
Second, the instructions for use
1. The technology is suitable for use in rice fields with an altitude of 700-1200 meters, and the higher the altitude, the more significant the effect of increasing the cross-linking, but the effect of increasing yield in the low-altitude flat dam area is not obvious, and there is no need for a cover film. .
2. The stable field can not be too shallow, the water can not be on the plane. The beginning of drainage in the milk ripening period is that the car has been dry and hard when harvesting, and people can stand on the side of the car.
3. Apply the base fertilizer at one time to try to meet the needs of the whole process of rice growth.
4. A white ultra-thin film with a thickness of 0.004 mm and a width of 2 m is used to facilitate pouch transplanting. After harvesting, the membrane should be cleaned in time to cause contamination with rabbit residues.
Third, input and output, social and economic benefits, market prospects, etc.
Each acre of field needs 2.5 kilograms of ultra-fine, about 20 yuan, 1.5 tons of whole fields, open compartments, and cover film, accounting for 15 yuan, saving more than 0.5 kilograms of seeds, saving at least 2 weeding and topdressing hours, and saving 100 cubic meters of water, up to 20 yuan of new investment, and more than 100 kilograms of rice per acre, according to the current market price of 1.20 yuan per kilogram, the output value of mu increased by 120 yuan, and the income of mu increased by 100 yuan.
At least 200,000 mu of paddy fields above 750 meters above sea level in the city, if the technology is fully adopted, it can increase the output of rice 20 million kilograms per year, increase the output value by 24 million yuan, and increase the net income by 20 million yuan. The economic benefits are extremely significant. The prospects are very broad.
The promotion of this technology can greatly alleviate the contradiction between returning farmland to forests and rations of mountainous people, and can promote the smooth progress of returning farmland to forests and protecting natural forests. Therefore, its social and ecological benefits are also extremely significant.
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