Corn mulching technology

Corn mulching technology

Corn mulching film has obvious functions of moisturizing, preserving glutinous rice, maintaining fertilizer, preserving seedlings, inhibiting weed growth, reducing pests, promoting corn growth and development, early maturing, and increasing yield. Generally more than 150 kg of non-covered corn production, increase income more than 90 yuan. In order to further improve the technical level of corn cover cultivation, increase the yield per unit area, and promote the continuous growth of grain production, corn mulching technology is introduced. First, the choice of plastic film size Single corn can choose width 60--70 cm, thickness 0.007 - 0.008 mm super-film (or 0.005 mm ultra-micro film) is appropriate; field corn can choose width 50 cm Super film. Second, the selection and cultivation of plastic film covering the cultivation of corn, selected in the flat terrain, deep soil, loose soil, irrigation convenience, fertility conditions better soil plots. It is advisable to select crops such as wheat, artichokes, beans, and green manure. After the harvest of the previous crop, deep plowing in a timely manner 23-27 cm, the end of the raft should be sufficient, filling the winter water, spring water filled with inadequate sensation. The land was flat, and it was repeatedly crushed and repressed. The land was flattened, soiled, covered, and virtual grounded. Third, the use of improved varieties in accordance with the climate characteristics and temperature conditions in our region, in the area below 1600 meters above sea level can choose to use late-maturing species, 1600--1800 meters above sea level optional medium-maturing varieties; 1800--1900 meters above sea level to early varieties of should. In order to prevent the occurrence of underground pests, 50% phoxim or 40% methylisophosphorus was used for seed dressing before seeding at a seed weight of 0.1--0.2%. With 20% triadimefon 150--200 grams of water 1.5--2.5 kg, mixed with 50 kilograms of seed to prevent head smut. 4. Apply basic fertilizers, nitrogen and phosphorus, and dry fertilizers to farmer-based fertilizers. The application of chemical fertilizers should be based on the principles of heavy phosphorus and nitrogen topdressing. This can prevent corn seedlings from becoming long and prevent late-stage defertilization and ensure corn production. Late normal birth. General Mushi high-quality farmyard fertilizer 6000--7000 kg, phosphorus pentoxide 6--7 kg as the base fertilizer, combined with a shallow plough before sowing into the ground, the implementation of concentrated trench fertilization better. 5. Seed sowing in proper period, reasonably close-grained soil plough layer 5 - 10 cm. Ground temperature stable through 10 o'clock. Covered corn is generally planted 5 to 7 days earlier than uncovered corn. Chuan-gu is usually planted on April 15th - 15th, along a mountainous area in April 15th - 20th. According to the width of 87 cm, a narrow line of 40 cm, dashing ditch according to the prescribed spacing of the seeds, seeds per hole 2 - 3, sowing depth of 3 - 5 cm. In general, the late-maturing varieties of Mubao seedlings are suitable for 4500--5000 strains, medium-maturing varieties of 5000-5500 strains, and early-maturing varieties of 5500--6000 strains. The sowing date of corn in the field can be postponed to April 25-May 1 in order to reduce the communism of wheat and corn in the early period. The band width is 80 centimeters (27 centimeters from wheat) and 4500 to 5000 seedlings are kept. In combination with sowing, narrow-middle or inter-plant mu depth of 10 kg of ammonium diammonium phosphate, ammonium nitrate 7 kg and fine fertilizer mixed for seed fertilizer, avoid contact with chemical fertilizers and seeds, so as not to affect seed germination and emergence. 6, cover film tight, ensure that the coverage of quality corn film cover should be used width and width of the flat for the planting specifications, line to open straight, after the implementation of the first seeding cover film, with the kind of cover with the method. Single corn wide variety of soybeans, radishes, garlic and so on. Seeding direction, you can use the wind to plant, in order to reduce the wind contact surface, to prevent the removal of film. Before the film is covered, the debris, stalks, stones and other debris in the front of the mantle are removed. Smash the clods to avoid scratching or pushing up the mulch. When the film is covered, it must be of good quality. The cover film must be tight. The film must be tightened, stretched, laid, and laid evenly. A shallow ditch should be opened around the film, and the film should be compacted and pressed tightly with soil. The wind broke off the mulch. However, the membrane pressure soil should not be too much, in order to maximize the width of the membrane surface, widen the lighting surface, so that strict, tight, flat, wide requirements. Seven, to strengthen field management (A) often check the plastic film, after sowing if found that the film has damaged ventilation, and timely use of fine soil sealing (including the release of seedlings). (B) timely release seedlings. When the corn seedlings are basically out of the corn, they will be planted in time. When transplanting seedlings, we must master the enlargement and hold small, put greens to let go of yellow, cloudy overshots, and sunny days to avoid noon. The principle of strong winds does not release seedlings. Generally, only one strong seedling per hole is placed, and seedling holes are generally suitable for one inch. After releasing the seedlings, the seedlings shall be sealed with seedlings (without compaction and water seepage) with fine wet soil and appropriate amount of grass ash mixed at any time to prevent air leakage, cool running, and overgrown weeds. Since the sowing of the corn in the field is late, the seedlings should be planted in the morning (morning, afternoon) to prevent hot sprouting. (c) Snoring and smashing. The emergence of corn is usually about 20 days after emergence. If it is not removed in time, it competes with the main stem for water, consumes nutrients, and affects the growth and development of the main stem. Therefore, it should be checked at any time and it is found that the tillers are removed in time to ensure the normal growth and development of corn. (D) reasonable irrigation, top dressing. According to the water requirement law of mulching corn, water should be controlled in the early stage to prevent leggy and late-ageing senescence under conditions of high temperature, high humidity and high fertilizer. Mid-term evapotranspiration is large, and water consumption is large. It is necessary to appropriately increase the amount of irrigation. But do not flood flooding, or soil moisture is too large, not only corn can cause disease, but also make root respiratory respiration and absorption. In the later period, with the increase of precipitation, the temperature drops, and the amount of irrigation should be appropriately reduced. In short, it should be based on the principle of "shallow, full, shallow". For single corn, it is generally irrigated 4 to 5 times in the whole growth period, and the amount of water per mu is 60--70 cubic meters. The time of irrigation in the headwaters of the Sichuan area should be carried out in the middle or late June. The second water is in early July. Afterwards, it can be based on the corn growth status, mantle, weather, etc. Generally, the water is poured every 20-25 days. In combination with irrigation, fertilizer is applied during the jointing stage and the big bellmouth stage. 10cm from the corn plant, respectively, Mu application (or ditch) Ammonium nitrate 16--18 kg and 43--50 kg, 100--150 g per gram of zinc sulfate, watered 50 kg foliar spray 1--2 times, to meet the needs of corn for zinc, and can prevent white mosaic disease; spraying dihydrogen phosphate two times, each dosage of 100 - 150 grams, watered 50 kg. And after tasseling until pollination, as appropriate, chase after attacking about 12 kg of granular fertilizer (Tiantian catch fertilizer according to the requirements of tons of grain fields). (5) The application of corn-stabilizers and scientific control. After spraying corn robustin, the corn plants were dwarfed, photosynthetic efficiency was enhanced, aging was delayed, high lodging resistance, early maturity, and yield increase were achieved. Three points must be mastered when spraying; (1) planting density. Generally increased by 1500--2000 strains compared with the normal local pupae; (2) spraying period. Generally, in the last 5-7 days of tasselling at the end of the corn big bell, the tassels of individual early-onset strains of the field population can be exposed; (3) spray concentration. Generally sprayed 25--30 ml per acre, watered 30 kg, with the use of the same, evenly sprayed on the upper leaves of plants, not heavy spray, missing spray. Make the plants dwarf, achieve the purpose of lodging resistance, stable production, and high yield. (6) Control of pests and diseases. (1) In late July, 10 grams of water will be used per acre with 50 kilograms of water per acre to control corn aphids; (2) 20% of dicofol 100--150 grams will be added, and 50 kilograms of water will be added to prevent and control corn spider mites. (3) No need to use 15% triadimefon 50 grams, watered 40--50 kg, field spray to prevent corn rust. VIII. Removal of Waste Membrane Corn After harvest, we must thoroughly pick up the old mulch to purify the soil and protect the farmland ecological environment. At the same time, it is necessary to actively introduce and use agricultural mulch films such as photodegradation and grass fiber to better prevent farmland from pollution and pollution and reduce costs.

Disposable Laryngeal Mask Airway ( Classic )

Disposable Laryngeal Mask Airway ( Classic )
Package
REF
Remark
DLM1.0
30PCS /Carton
Carton size
Size
1.0
3 years
Classic Type
(PVC/Silicone)
Reinforced Type
(Silicone)
DLM1.5
DLM2.0
DLM2.5
DLM3.0
DLM4.0
DLM5.0
DLM1.0F
DLM1.5F
DLM2.0F
DLM2.5F
DLM3.0F
DLM4.0F
DLM5.0F
30PCS /Carton
30PCS /Carton
30PCS /Carton
30PCS /Carton
30PCS /Carton
30PCS /Carton
30PCS /Carton
30PCS /Carton
30PCS /Carton
30PCS /Carton
30PCS /Carton
30PCS /Carton
20PCS /Carton
1.5
2.0
2.5
3.0
4.0
5.0
1.0
1.5
2.0
2.5
3.0
4.0
5.0
3 years
3 years
3 years
3 years
3 years
3 years
3 years
3 years
3 years
3 years
3 years
3 years
3 years
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm
38.5×37.5×32.5cm

Disposable Laryngeal Mask Airway

Zhejiang Haisheng Medical Device Co., Ltd , https://www.hisernmedical.com

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