Intercropping soybeans with strong management

Optimized planting and selection of elite varieties "The latest research results show that the use of wide and narrow rows of planting, that is 155 cm wide rows of corn, narrow row 45 cm, sowing soybeans, corn wide row within 2 to 3 rows of soybeans, corn and soybeans distance between rows Not less than 50 centimeters, this kind of planting effect is the best.” As for the front of soybean, it can be wheat, potato, rape, broad bean and other crops. In the second year, corn and soybeans were replanted in strips to reduce soil-borne diseases. “Soybeans and corn can both achieve high yields, and species selection is the key. Research shows that corn should be compact or semi-compact and have high-yielding varieties with high resilience within 250 cm, such as Denghai 605, Sanxiayu 3, and Changyu 19. Chuandan 28, Shenlongyu 5, etc.; Soybeans should be shade-resistant and resistant mid-late-maturing summer soybean varieties, such as Tribute No. 1 and Nandou 12.” Corncoatings should be planted in order to reduce the occurrence of pests and diseases. Corn is generally packaged. Clothing seeds. Soybeans should be sown with uniconazole before seeding. The method is very simple. That is, “with every kilogram of seed, use 5% of Uniconazole WP 16-20 mg in the plastic bag to shake back and forth several times. Maize seedlings planted in spring must be selected for spring sowing, according to the climatic conditions around the country, the corn seedlings planted in mid-March in the northeast and south of Sichuan can be selected for transplanting, and the seedlings planted in the middle of March and the first half of April in the Chuanzhong region should be sown. For transplanting corn seedlings, it is best to use fattening seedlings, one or two strains per hole. Soybean summer sowing, planting areas in accordance with the weather forecast in time before the rain or after the rain sowing, sowing time for the northeastern Sichuan and Chuanzhong area in early June, south Sichuan area 6 mid-; sowing method for no-tillage grazing on demand or no-tillage machinery live broadcast , On-demand 4 to 5 tablets per hole, machine sowing 3 to 4 tablets per hole. How to properly plant the scientific field management of corn and soybeans for close planting, planting 3500-4000 acres of corn, each hole when leaving two plants, the hole distance of 33 to 38 cm, each hole to leave the single plant's hole distance reduced by half. Soybeans are densely planted according to the conditions of light and heat and soil fertility. There are 6000 to 7500 plants per mu in the gully, with 3 rows in the row, the spacing is 33 centimeters, and the distance is 40 to 50 centimeters. When interplanting 2 rows, the row spacing is 45 centimeters. Caverns from 27 to 33 centimeters, three seedlings per hole; two sets of soil (and above) 7000 to 9000 per acre, with nesting within three rows, spacing of 33 centimeters, hole spacing of 30 to 40 centimeters, interplanting 2 lines When the spacing is 45 centimeters, the distance between holes is 22 to 28 centimeters, and 3 plants per hole are set. 1. Make up seedlings and seedlings. Within one month after sowing, the seedlings were promptly filled. When the seedling age reaches 20 days or so (seedlings grow to 2 or 3 leaves), when the soil pests are unable to injure the seedlings, they should stay weak and strong, and the seedlings should be seedlings, the corn seedlings should be 1 seedling per seedling or 2 seedlings, and the soybean seedlings per hole should be 3 seedlings. . 2. Control weeds. Chemical herbicides or artificial weeds are used to remove weeds before and after corn or soybeans are sown. Corn is soaked with 50% acetochlor 50-200 ml/mu, or 72% metolachlor EC before sowing. Emulsion) 100 ~ 150 ml, watering 40 ~ 50 kg spray, or after maize emergence (3 ~ 4 leaf phase), 25% octanoic bromoformnitrile EC (mudan) 80 ~ 120 ml per acre, watered 40 ~ 60 kg of spray; Soybean with 50% acetochlor EC per acre of l00 ~ 150 ml, watering 30 kg in the field evenly spray. 3. Scientific fertilization. Combine plowing corn 1000 kg per acre with soil and compost, plant a trench in the middle of a narrow row before transplanting or direct seeding, apply 40-50 kg of bio-organic fertilizer per acre, and 40-50 kg of 40% special compound fertilizer; During the period, 16 to 18 kg of urea (or 43 to 48 kg of ammonium bicarbonate) is applied per acre. Soybean base fertilizer Mushi 30 to 35 kilograms, potassium chloride 4 to 5 kilograms, or 40% compound fertilizer 15 to 20 kilograms, top-dressing in the corn after harvest as the field grows Mushi 5 kilograms of urea, individual growth is poor The block can be applied to 3 to 5 kg of urea in the rain after flowering. 4. Control the defense. When 10 to 12 leaves of corn are unfolded, 4-30% corn strong strong water agent is used per mu, 25 to 30 grams, and 15 to 20 kilograms of water, evenly sprayed on the upper leaves of corn. Soybean branching period or early flowering period with 5% of Uniconazole WP can be 24-48 grams or 15% of paclobutrazol wettable powder 50-70 grams, watering 40-50 kg evenly spraying stems and leaves. Soybean seedlings will focus on the prevention and control of the blackfly, Saccharomyces visinalis, and will be applied on the 7th, 15th, and 21st days after emergence, or during the occurrence period of the black fly, and sprayed with 1000 times of 50% phoxim EC per acre; In order to control the root rot in time, use 50% thiophanate-methyl WP or 65% zein zinc WP to water 50 kg stem-leaf spray per mu; pay attention to the control of locusts and spider mites in the whole growing period. Mu with 50% anti-inferiority WP 15 to 30 grams or 2.5% to Fortune EC 15 to 20 ml diluted 50 kg water spray. 5. timely harvest. During the waxing stage, the corn presses the lower leaves and retains the three-leaf rods; during the yellow ripening stage, the harvesting ears are harvested and the corn stalks are immediately cut and covered in situ. It is advisable to harvest the soybeans from yellow to ripe and harvest them, then dry them and dry them to thresh.

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