High-yield spring sowing cultivation techniques of black corn
December 20 03:05:08, 2018
Black corn is a new corn variety introduced in recent years and is a precious health food for fruits and vegetables. After two consecutive years of trial planting, they all obtained a yield of 400-500 kilograms for 667 m2. Black corn plant height 120 cm, growth period of 90 days, German long 12-t5 cm, single panicle weight 150 grams, suitable for fresh corn sticks for sale, can also receive corn grain, for black food use. Planting black corn is of high value. It is generally planted in late March and planted in mid-June in the wrong season. The economic benefits are considerable. Black soil requirements and fertilization techniques for black corn Black corn is suitable for all types of soil. In early spring, it needs to be covered with plastic film in order to increase the temperature and promote normal growth. It is due to the rainy season in summer. Planting plots should pay attention to digging drainage ditch. Due to the current fertility of soil nitrogen, phosphorus deficiency, potassium deficiency. Preparation of base fertilizer should be added phosphorus, potassium, nitrogen stability. Due to the short growth period of black corn, short stature, and individual growth, it is suitable for one-time application of basic fertilizer. It requires 667 meters of diammonium phosphate 50 kg, potassium sulfate 25 kg, all-element compound fertilizer 10 kg or urea 20 Kg, superphosphate 50 kg. Its high-yielding film-covering cultivation techniques are as follows: 1. Seeding according to plot preparation conditions, generally starting from the late March to late April, beginning with the wrong period of sowing, the wrong period of 15 to 20 days as a cycle, such as after the wheat harvest For sowing, it is necessary to carry out spawning about 7 days before the wheat harvest so that the black corn can be sowed. Direct seeding is adopted for the sowing. Because the black corn has a short, compact, strong lodging resistance and strong resistance, it must be added at the time of sowing. Large density, leaving two plants per hole, sowing the size, 667 meters 2 broadcast 3500-4000 points is appropriate, the appropriate strain (hole) spacing is 25 cm x 90 to 50 cm, such as row spacing planting, suitable strains (holes ) The row spacing is 22-25 cm x 75-50 cm. Second, cover the film to select the appropriate mulch according to the row spacing of planting, cover the mulch after sowing, cover the mulch to straighten out, level out, use clods and earth pressure cover in the middle and all around. solid. In order to prevent the wind from scratching the mulch and losing the function of the cover film, the mulch film is often inspected. If fins or breakage are found, cover them immediately. III. Field Management Techniques 1. Seedling management The key to seedling management is Bao Miaoquan, Miao Qi, Miao Lian, and Miao Zhuang. For some young seedlings that have no mulching film, they must be artificially broken to help them release the mulch. Some black maize lacking seedlings and ridges must be seeded and replanted; some seedlings, weak seedlings and time seedlings, and seedlings. Maturity time should be set at 2 to 3 leaves. 2. The key to management in the mid-to-late stage is to strive for a lot of success. The key to late-stage management is to increase the weight and increase the output. In response to the main objectives of management, some of the fertilizer shortages are due to the time, due to seedlings, and top dressing, 15 kg of diammonium phosphate and 5 kg of potassium sulfate. 3. Management of water mulching corn in early spring, the following species, generally can be small to the mouth of the mouth according to atmospheric conditions, determine the water or not; summer sowing of corn, generally about half a month to water, it should be noted that the water should be Pouring feet, drenching, not leaving water, especially in the early spring should pay attention. 4. Removal of Invalid Forked Black corn Due to the characteristics of the main stem for tillering, all stems produced by the main stem are removed leaving only the main stem.
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