In recent years, as people's eating habits have changed, people's demand for sweet corn has continued to increase. Therefore, the production of sweet corn is a major opportunity to adjust the agricultural structure and increase economic efficiency. Now we will make a summary of the production management techniques for sweet corn in late production for your reference: 1. Timely sowing and cultivation of strong glutinous rice. 1. Date of sowing. Sweet corn sowing too early, short growing period, low yield; sowing If the time is too late, it may easily cause inconsistent maturation time or even suffer frost damage. Therefore, suitable time should be selected according to the climate of each place. For example, in the eastern part of Guangdong, you can choose to sow in mid-August. 2, nurture strong (1) preparation of seedbed: seedbed width of 1.2 meters (including groove width 30 cm), leveling with the manure wet surface of the seedlings, and then every 10 square meters uniform application of 0.3 kg of rice BB fertilizer for the base fertilizer. Note that the seedbed must be flat so that the mud pellets are closely attached to the seedbed, which is conducive to the rooting of the corn; (2) Fine seeding: firstly use vegetable garden soil, paddy soil or silt, and a small amount of grass ash as the raw material to make the pellets (dry and wet suitable ) Place the seedbed. About 3,800 mud pellets per acre of Daejeon are used. Each clay pellet is half an orange. Use a forefinger to drill about 1.2 centimeters deep. After the stem is dried, put one seed per hole. Note that mud pellets should be left about 5 cm away from the seedbed to prevent the mudballs from appearing on the soil. Secondly, do a good job of re-concrete work. Use fine soil or moist mud to spread evenly on the mudballs, cover the seed holes and fill the gap between the mudballs. Use a shower or sprayer to soak the wet surfaces. Mix the phoxim with rice bran. Sprinkle on the noodles to prevent the harm of the underground pests; (3) Covering the film: Sweet corn is very sensitive to moisture, and water in the seed holes can easily cause the seeds to swell and die. Therefore, after the soil is covered with a film to prevent rain erosion, the seeds can be peeled off after emergence. Second, the fine soil preparation, a reasonable close planting, planting, planting, weeding, planting, planting, planting surface width 90 cm, groove width 30 cm, ditch depth 30 cm. Before the site preparation, 40 kg of ammonium bicarbonate was applied to Mushi. After the smashing, the loquat was mowed. Mu was sprayed with butachlor 150 kg and 50 kg of water was sprayed on the lotus root. Two rows of plants were used with a row spacing of 60 cm and a spacing of 30 cm. About 3,500 plants were planted per acre. Before transplanting, 30 kg of phosphate fertilizer and 40 kg of rice BB fertilizer + 500 kg of decomposed farmyard manure were applied as base fertilizer per acre in the middle of the ravine. 2, timely transplant 7 days after sowing (ie, 2 leaves 1 heart), choose cloudy days or sunny afternoon transplant, before planting to do a good job of classification seedlings (that is, a large seed, a small seed), planting leaves To ditch, can not be planted too deep, while setting foot side of the rooting water, conditional irrigation should be horse water. Note that the base fertilizer cannot be placed in the planting hole to prevent the “high temperature†and rapid fertilizer effect causing “burningâ€. Third, to strengthen field management 1, timely and timely application of fertilizer in accordance with local conditions, early application, balanced application: (1) 5 days after transplanting per acre Shi manure water 20-25 urea or urea 4-5 kg ​​flushing 1000 kg; ( 2) 10 days after transplanting, Mushi 7.5 kg rice BB fertilizer leachate 1000 kg; (3) 20 days after transplanting Mushi rice BB fertilizer 25 kg + potassium sulfate 10 kg, fertilizer applied in the middle of the two rows of corn After the fertilization ditch, the soil is reconstituted; (4) Potassium dihydrogen phosphate and plant-planted potassium can be used for extra-root dressing one or two times after pollination to increase the seed setting rate. 2. Scientific water-sweet corns should avoid water and drought. The water requirement increases continuously throughout the growth period. The pre-growth stage, especially the seedling stage, is prone to cause root necrosis, slow growth, and even plant death. In the heading grouting period, the field should be kept moist, so that rapid irrigation speed row. 3. Combine fertilization, loose soil, and weeding after planting the cultivating soil. Grow the soil on the bottom of the plant and raise the plant's lodging resistance. This will not only moisturize and protect the fertilizer, but also be beneficial to irrigation and drainage. During the whole growth period of sweet corn, two soils were cultivated, ie, small earth and large earth. The small paddy soil is combined with the second fertilization, and the large paddy soil is combined with the third fertilization. 4. In a timely manner, about 25 days after planting, planting shall be conducted in a timely manner, leaving only the topmost or the top second, eliminating the phenomenon of more than one plant and increasing the commodity value of sweet corn. IV. Preventing pests and diseases in time 1. Preventing insects from mainly controlling underground pests and corn borers: (1) Placing baits. After sweet corn is transplanted, mu is made of 0.5 kg of trichlorfon + 0.5 kg of phoxim + a small amount of brown sugar + 20 kg of rice bran. The bait ring is placed sideways, poisonous to kill underground tigers, bighead locusts and other underground pests; (2) Pesticides such as Mireil, insecticide double, or Jinyun No. 1 are used for pest control, especially during the big bell mouth period, mu. The use of 1.5 kilograms of Merrill or 0.1 kilograms of Jinyun No. 1 mixed sand 10 kilograms is applied to the bell mouth. This measure is crucial for pest control. In the heading and silking stage, pesticides such as trichlorfon, dimethoate or pupa are used to control armyworm, silkworm and aphid; (3) In regions where the rodent damage is severe, they are made of sodium salt of the enemy before sowing and at the filling stage of the ear. Poison Valley conducts allergens. 2. Prevention and control of disease mainly control sheath blight and size of leaf spot disease: (1) Control of sheath blight, prevention and treatment with Jinggangmycin; (2) Prevention and treatment of leaf spot, Rhizoctonia, Carbendazim, 100 Bacteria and other pesticides for prevention and control; (3) prevention and control of rust, available Triadimefon, agricultural streptomycin and other pesticides for prevention and treatment. Fifth, timely harvest When the corn glutinous leaves turn white, dry silk, grain full and golden yellow, you can harvest.
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