Wheat early, high and dense cultivation techniques

Technical features Soil preparation Fertilization, early sowing in time; reasonable dense planting, increasing fertilization material; nitrogen fertilizer after migration, timely irrigation.

Soil plowing, loosening, and hoeing combined with autumn soil preparation, and spring snowfall, the quality of arable land before the planting was flat, sloppy, fine, broken, and homogeneous. Site preparation, sowing, and repression are centralized, compound and continuous operations.

Seed selection of the appropriate species, the use of cleaning machine selection and then using the proportion of selected species selection, seed purity of more than 98%, more than 98% of the degree of purity, germination rate of 90%. Seed coating treatment, the proportion of wheat drought-resistant nutrients and seeds is 1:400, and the seeds can be sown after 5 days of boring.

Seed sowing time, about April 5 to 15 days, the depth of soil melting more than 5 cm began to sow. Planting density is 8 million plants/10,000 square meters. Sowing quality, so that the broadcast accuracy, the error does not exceed 1%; row spacing is equal, the error does not exceed 1 cm; sowing stations, reciprocating combination line error is not more than 2 cm, 3 cm, not heavy, tight soiling, The sowing depth control is appropriate after pressing 4~6 cm, and it can be suppressed immediately after sowing.

Fertilizer is usually applied to Mushi 8~10 kg pure nitrogen fertilizer, 8~10 kg phosphorus fertilizer, and 3~5 kg potassium fertilizer. Autumn deep (81 ~ 0 cm) fertilization temperature below 10 °C (after October 1st), fertilizer accounted for 60% ~ 70% of the total fertilization, deep fertilization plots must reach the sowing state. The main fertilizer is fertilizer, with nitrogen, phosphorus, and potassium, applied before sowing or once with sowing. Foliage dressing, 3 to 4 leaf stage combined with chemical herbicide spraying, spraying 5~10 kg urea, 0.6 kg rare earth or other trace fertilizer per hectare.

Field management First, the pressure Qingmiao: In the two-leaf as one heart to the three-leaf one-heart period, the number of repression 1 ~ 2 times, requires uniform operation, the land can not sharp turn, prevent the wetland rolling. Second, chemical herbicide: in the wheat seedlings 3 to 4 leaf stage, according to the following formula for water spray: 10% Jiahuanglong WP 75-112.5 g / 10000 square meters +72% 2.4D butyl 0.8 liters / 10,000 square meters ;72%2.4D Butadiene 0.8L/10000m2+75% Po Shou 15~20g/10000m2. Third, pest and disease control: To do a good job in forecasting and forecasting. Mythimna separata control: 1 to 2 instar larvae of 10 to 15 heads were treated with 80% of dichlorvos EC 1 to 1.5 kg/10000 m 2 or pyrethroid insecticide 0.4 to 0.6 kg/10000 m 2 using machinery or aircraft. Fusarium head blight control: Generally spraying 50% carbendazim 2 kg/10000 m 2 in wheat heading to flowering stage, spraying with machinery or aircraft, the control effect can reach more than 80%.

The harvested wheat is harvested at the ripening stage and the cutting height is less than 25 cm, so that it is de-cleaned, and the total loss rate is less than 2% without running grain, leaking grain or grain. Staged harvesting begins at the beginning of the waxing process and midwinter cuts the sun. The mechanical cutting and spreading shop shall be straight, the cut width shall be the same, the shop shall not be collapsed, the heads shall not fall, and the panicles shall not fly. The height of the cutworm is generally 18 to 22 centimeters. It is advisable to store the scales with a width of 1.5 to 1.8 meters and the thickness is generally 8 ~10 cm. After harvesting, the moisture content of wheat grains is less than 18%, and the total loss rate is less than 2%.

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