Cultivation Techniques of 800 kg Single Cropping Rice

I. Variety selection

The high quality variety "Chuanxiang 8" with the best yield per unit area in the past three years was selected.

Second, the main push technology

Dry seedling raising, intensive cultivation of single cropping rice, soil testing and formula fertilization, integrated control of diseases and insect pests.

III. Specific operation in the field

1. Dry seedling raising

(1) before May 19, select fertile and loose vegetable garden fields, according to the need for 6 square meters of seedling fields per mu, apply 45% compound fertilizer 50 grams per square meter (12 grams) plus calcium superphosphate 50 grams (12 grams) as base fertilizer, fine rake the seedbed border after fertilization.

(2) soak the seeds with 400g (0.4kg) per mu, soak the seeds with 2000 times "402" medicament, wash them after soaking, and then sow them evenly on the seedbed before May 20, compacted with planks, watered, and covered with fine soil. The weather is rainy and cloudy, covered with a small arch shed plastic film, sunny and timely ventilation.

(3) transplanting when the age of dry-raised seedlings is 10 days.

2. Field transplanting and management

(1) apply sufficient basal fertilizer and dig ditches to form beds. 500kg of rotten chicken manure (or 1000 kg of rotten pig manure) is used as base fertilizer per mu. After ploughing, 35 kg of ammonium carbonate mixed with 30 kg of calcium superphosphate per mu (or 50 kg of rice special compound fertilizer "Huidoli") was applied as rake fertilizer, and then ditches were dug, with a width of 3 meters, a width of 30 cm and a depth of 20 cm. The surface of the border was flattened on the basis of filling the ditch water, and the rice seedlings were planted the next day.

(2) wide row dense plant, single book sparse planting. The transplanting density is about 10 × 6 inch, the width of the bed is 3 meters, the planting density is about 10 × 6 inches, the width of the bed is 3 meters, the planting density is about 10 × 6 inches, the width of the bed is 3 meters, the planting density is about 10 × 6 inches, the width of the bed is 3 meters, and the planting density is about 10 thousand rows per mu.

(3) applying topdressing. Seven days after transplanting, 7.5 kg of urea and 15 kg of potassium chloride were mixed with 35% butyl benzyl mixture herbicide 100 grams per mu. The young spike differentiated to the booting stage in early August, and the seedlings were fertilized with urea 3kg / mu and potassium chloride 5kg / mu. In the break to full heading stage, combined with disease control and pest control, 50 kg of flushing water was applied per mu and sprayed 2-3 times for extra-root fertilization.

(4) Scientific water management. Before transplanting, the field is drained to the ditch filled with water, and there is no water layer on the border surface. Keep the seedlings full of water after planting. When the weather is dry, or in case of heavy sun, when the border is covered with crust, pour 1 cm thin layer of water. When applying tillering fertilizer and panicle fertilizer, the surface of the border was kept in shallow water. Keep the field moist at the effective tillering stage. In the jointing stage or when the number of tillers in the field reached 80% of the number of effective panicles, drain the ditch water in time to shelve the field. Irrigation with shallow water from booting to heading stage. Full ear after filling ditch water or shallow water, naturally dry, then irrigation, falling dry, repeatedly and alternately. Drainage 7 days before harvest. Irrigation 3 cm when applying pesticides for disease control, pest control and chemical weeding.

3. Control of diseases, insect pests and weeds

Prevention and control shall be carried out in accordance with the requirements of the rule of unified defense.