1 Scope
This standard specifies the environmental production conditions, seed and its treatment, land selection, selection and land preparation, fertilization, sowing, field management and product quality of Grade A green food corn production.
This procedure is applicable to the production of Grade A green food corn in the province.
2 Normative Reference Document
The terms in the following documents become the terms of this standard by reference to this standard. For dated references, all subsequent amendments (not including errata content) or revisions do not apply to this standard. However, parties to agreements based on this standard are encouraged to study whether they can be used. For undated references, the latest edition applies to this standard.
NY/T 391 Green Food Origin Environmental Quality Conditions
NY/T 393 Green Food Pesticide Use Guidelines
NY / T 394 green manure use quasi
3 Environmental conditions of production
3.1 The environmental conditions of the place of production should meet the requirements of NY/T391.
3.1.1 Soil
Choose soil with deep soil and good drainage, organic matter content of 2% or more, PH value of about 7. The environmental quality of the place of production conforms to the NY/T391 standard.
4 Seeds and their treatment
4.1 Variety Selection
According to the ecological conditions, the high-quality, high-resistance, high-yield, and high-yield activities required for the growth period are selected to be 150°C less than the accumulated temperature of the local annual activity.
4.2 Seed Quality
The purity and clarity of the seeds are not less than 98%, the germination rate is not less than 90%, and the water content is not higher than 16%.
4.3 Seed Treatment
4.3.1 Sunning
The seeds were air-dried for 2 days to 3 days before 15 days of sowing.
4.3.2 Test Bud
One to two germination tests were performed 10 days before sowing.
4.3.3 Pharmacy stuffing
For plots with heavier underground pests, pesticides meeting NY/T393 requirements should be used. For example, 50 kg of 50% phoxim emulsifiable concentrate is used to suffocate 40 kg of water.
4.3.4 Chemical dressing:
For plots with heavier corn smut, use pesticides that meet NY/T393 requirements. For example, use 25% powder rusting wettable powder 320g to mix 100kg.
4.3.5 Soaking Seeds and Promoting Bud
The seeds are immersed in water for 8 to 12 hours, and then removed and placed at a temperature of 20 ° C to 25 ° C for germination. The seeds are turned once every 2h~3h. After the seeds are exposed to the radicle, they are placed in a cool place for germination, to be sown, or soaked with 0.1% zinc sulphate solution for germination.
4.3.6 Bacterial fertilizer seed dressing
Fertilizers complying with NY/T394 requirements should be used, such as 7.5 kg of solid silicate bacteria or liquid silicate bacteria 1.5 L to 2.25 L per hectare, or 1.5 L to 2.25 L of liquid corn nitrogen-fixing bacteria.
5 election to choose stubble plowing and soil preparation
5.1 Selected Land
Choose plots with deep tillage, high fertility, water retention, fertilizer retention and good drainage.
5.2 Selected
Choose a fertile mouthwash such as soybean, wheat, potato or corn that has not been used for long-term residual pesticides.
5.3 Tillage Site
The implementation of the soil cultivation system based on the deep pine, combined with pine, turn and simmer, was turned over once in three years.
5.3.1 Fuqiu rectification site
The depth of ploughing is 20cm~23cm, so that there is no leakage tillage, no standing, no smashing, turning back and squatting, and timely ridges and suppression.
5.3.2 harrow stubble subsoiling
Generally applicable to soybeans, potatoes and other soft mites with better soil moisture, first smashing the deep pine ridges, then smashing, ridges and suppression, and strictly prevent running. Deeply loosening the land, first loose the original furrows, and then break the original ridges to synthesize new ridges and timely suppression.
6 Fertilizer
6.1 Organic Fertilizer
Fertilizers that meet the requirements of NY/T394 should be used. For example, 30t to 40t of agricultural fertilizer containing more than 8% of the organic matter should be applied per hectare, combined with soil preparation or strip application.
6.2 Fertilizer
Fertilizers that meet NY/T394 requirements should be used. For example, phosphate fertilizer: 150kg～225kg of diammonium phosphate per hectare, combined with soil preparation for base fertilizer or seed fertilizer application; Potassium fertilizer: 60kg～90kg of potassium sulfate per hectare, used as base fertilizer or seed fertilizer, can not be used as autumn fertilizer; nitrogen fertilizer: per hectare Urea is applied in the range of 200kg to 225kg, of which 25% to 30% is used as a base fertilizer or a seed fertilizer, and another 60% to 70% is applied as a top dressing.
6.3 Fungus Fertilizer
For plots that are not seeded with silicate bacteria or that do not have mineral potassium fertilizer applied, fertilizers that meet the requirements of NY/T394 should be used. For example, 30 kg of solid bio-potassium fertilizer should be applied per hectare as a base fertilizer.
6.4 Poisonous Particles
If the underground pests are heavier and there is no shortage of pesticides, pesticides that meet the requirements of NY/T393 should be used. For example, 60kg ~ 70kg of 0.125% phoxim granules per hectare (preparation method: 50% phoxim emulsifiable concentrate 0.5kg, water 5kg ~ 10kg mixed into 200kg cooked broken beans, corn or sorghum) with fertilizer Implementing and controlling underground pests.
7 Sowing
7.1 Sowing
The ground temperature is stable and sown by 5 °C ~ 6 °C. The first accumulated temperature zone was planted from April 20 to 30; the second accumulated temperature zone and the third accumulated temperature zone were planted from April 25 to May 5.
7.2 Planting Method
Planted by clear or transparent cultivation.
7.3 Broadcasting method
For artificial germination, the plots with soil water content less than 20% sit on the water, and the plots with soil water content higher than 20% can be directly planted; the mechanical precision points (holes) on the ridge can be The ridged plots are mechanically equivalent and equally ordered. The sowing was done in a deep and shallow manner, and the soil was evenly covered. After the planting of the land, the plots were suppressed in time; the water was planted and the plots were suppressed after the day; the mechanical sowing was followed by the suppression. After the suppression, the sowing depth reaches 3cm ~ 4cm, no leakage, no drag.
7.4 Density
Breeding: Plant-type convergent varieties, 60,000 to 80,000 seedlings per hectare; plant-type luxuriant varieties, 50,000 to 53,000 seedlings per hectare. Transverse cultivation: plant-type convergent varieties, with 67,500 to 90,000 seedlings per hectare; plant-type luxuriant varieties, 53,000 to 55,000 seedlings per hectare. The seeding amount is determined according to the planting density and the like.
8 Field Management
8.1 Chatian Replanting
Check the germination condition immediately before emergence. If powder type and rotten buds are found, prepare seeds for replanting or prepare seedlings. If seedlings are lacking after emergence, use ready seedlings or extra seedlings in the field to replant in time. When 3 to 4 leaves are used, the weak seedlings, diseased seedlings, and seedlings should be removed, and the seedlings should be set at an equal distance.
Subsoiling trip to 8.2 front shovel
After emergence, you should carry out a deep loose or shovel before plowing.
8.3 Shovel
After shoveling the head, shovel every 10d to 12d. Do three shovel and three shovel.
8.4 Pest Control
8.4.1 Pest control is mainly based on physical and artificial control, and the drug should meet the requirements of NY/T393.
8.4.1.1 Sticky insects
In the middle and late June, an average of 100 corns with 50 armyworms reached the control index. Carry out artificial killing.
8.4.1.2 Corn 螟
The control index is 80 worms of 100 worms.
A) High-pressure mercury lamp control: The initial date of emergence of local corn borer adults, from 9:00 every night to 4:00 the next day, the light rain can still be turned on.
B] Trichogramma control: In the corn cocoon period, the bees are placed once or twice in the field, and 225,000 bees per hectare.
C] Bt emulsion: In the end of the heart of the heart (5% male), 1.5 kg to 3 kg of BT emulsion per hectare is granulated or sprayed with 450 kg of water.
D] Sealing: Before April-May corn smashing, each cubic meter of straw is sealed with 100g of Beauveria bassiana powder (containing 5 billion to 10 billion Beauveria bassiana per gram).
8.5 Weeding
Pre-emergence or post-emergence soil treatment can be used in areas with good soil moisture.
Pesticides that meet NY/T393 requirements should be used, such as 50% acetochlor (90% Wones) 1500 (830) to 1800 (1050) ml per hectare.
8.6 丫å沂临沂肥
Remove the scorpion in time to avoid damage to the main stem.
8.7 Topdressing
Before the jointing of the corn or during the 7th to 9th leaf period, the total amount of urea per hectare is 70% to 75%, and the topdressing position is 10cm~12cm from the plant and the depth is 10cm~15cm.
8.8 Putting Autumn Ridge
In August and mid-August, take the autumn grass and take the grass 1 or 2 times.
8.9 Station stalk suede drying 9 Harvest
9.1 Harvest Time
The corn is harvested in the late stage.
9.2 Harvesting Method
Take the stalk artificial harvest or mechanical harvest. Can not be stacked on the ground, to be single, single, single, single storage, to prevent mixing with ordinary corn.
9.3 Drying and Descaling
It is necessary to dry in time after harvesting. When the water content of the grain reaches 20% or less, the grain is threshed, and more than 20% is threshed after freezing. The kernels after threshing are to be cleaned.
After the corn wax is cooked, the corn, ear, and leaves are dried.
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