Key points of dry Seedling-raising techniques for planting Rice

In recent years, the performance of dry raising rice seedlings and field planting in various townships of our city's Agricultural Technology Popularization Center shows that the technology of dry raising rice seedlings has the functions of saving labor, saving fields, saving water, saving expenditure, saving expenditure, and increasing production significantly. The main reason for increasing the yield is to make full use of the advantages of drought raising seedlings to start quickly and early tillering, promote low tillering, increase the effective panicle of rice, form a large panicle and increase yield.

I. Land selection and land preparation

The main results are as follows: 1. In terms of seedling raising time, timely and early breeding should be mastered. The seedling age is 35-45 days, and the leaves are 5 to 6 leaves.

2. The fields with low groundwater level, loose soil, medium fertility, convenient drainage and irrigation, few weeds, few underground pests and leeward sun should be selected for dry seedling raising.

3. Soil preparation: soil moisture: 1.4 m to 1.6 m, high ridge and low moisture, early turning and drying of seedling bed. More than a week before sowing, 10 kg of rotten fine farm manure, 60 g of common calcium, 40 g of urea or 100 g of special compound fertilizer for rice (10ml / 10m 5), plus 5 g of zinc sulfate and 10 g of potassium sulfate, combined with soil preparation and bed preparation, the fertilizer was fully mixed with 1015 cm topsoil. Keep the soil moist and fertilize.

2. Sowing and mulching

Before sowing, 1 gram of dimethazone per square meter was used to disinfect the soil, and the seeds were gently pressed to the soil on three sides, then covered with fine dung soil for one centimeter, and covered with water to cover the film. After the seedlings are young, the film can be opened (the film can be postponed in case of low temperature). After covering the seedling field with more weeds and covering the soil, every 10 meters, 2.5g butachlor, 60 times the liquid, 1.5kg was used.

III. Seedling field management

After uncovering the film, the seedling should not be watered too early for the first time, and it should be watered thoroughly for the first time. Generally, the leaves of the seedlings are not curled and the leaf tips are dewy, indicating that the seedlings are not short of water. During the whole seedling raising period, the watering times should be controlled to prevent the seedlings from overgrowing.

4. Topdressing

After uncovering the film when the seedlings grow to 2 leaves, they are sprayed with a mixture of 0.3% potassium dihydrogen phosphate and 0.2% urea, and apply again 7 days later.

V. Disease and pest control

Immediately after emergence, Sanye Yexin was sprayed with 70% dimethazone wettable powder 25 grams of water and 30 kilograms of water evenly to control rice blight. If it is found that aphids can be sprayed with 50 milliliters of 5% imidacloprid EC and 50 kilograms of water for root control, drillers are controlled by the prediction and forecast of the municipal plant protection station. The day before transplanting, the seedlings were sprayed with 50 kg of 75% tricyclazole 20 grams per mu to control rice febrile disease.