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Cultivation and management techniques of fresh fruit type Huazhen sweet corn
Hits: 24369 ; source: Foshan Nongxing seed technology department author: release time: 2011-05-16 09:22:24

South China is warm in winter, high temperature and rainy in summer and autumn, which is very beneficial to the growth of sweet corn. However, due to the rapid growth and insufficient accumulation of plant nutrition, the nutritional quality is reduced. At the same time, the occurrence of diseases and insect pests is also serious due to high temperature and rainy weather. In order to control diseases and insect pests, high toxic pesticides are usually used or the dosage is increased, which not only affects the quality of products, but also does not meet the requirements of pollution-free agricultural production. In order to better promote the planting of sweet corn, make the product high-quality and suitable for the time, and improve the economic benefits, the high-quality and efficient cultivation techniques of sweet corn are summarized as follows:

one Select excellent varieties

In recent years, Taiwan farmer Huazhen sweet corn varieties with high yield, high quality, disease resistance and wide adaptability have been planted all over the country.

two Soil preparation and sowing

one )Select sowing date
The processing time of fresh corn and green corn is limited twelve It can only be stored five seven Days, at room temperature two three Therefore, planting should focus on the target positioning of the market, determine the sowing date, stage and batch sowing, and generally calculate the sowing date according to the growth period of varieties, supply market time and local temperature, and plant in spring( three In the first ten days of the month) eighty In North China, due to local climate change, the growth period may increase to eighty-five ninety God. Spring sowing of super sweet corn three Autumn sowing in the first ten days of the month eight The first ten days of the month.

two )Interplanting
Sweet corn grows slowly in the early stage and takes up less space. It can be interplanted with some low and short-term crops, or interplanting the already bred sweet corn seedlings in the later growth stage. Generally, the seedlings will be raised about a week before the green bud of sweet corn is harvested three It can be transplanted to the middle of the seedling according to the conventional management.

three )Selection, preparation and sowing
Sweet corn can be separated by time or distance, that is, the flowering period of sweet corn is staggered twenty Around the day, or around three hundred five hundred Rice is not planted with common corn to prevent pollination from affecting quality. Corn is a dry land crop which needs more water. It is afraid of drought and waterlogging, so it is necessary to choose sandy loam soil with convenient drainage and irrigation and good fertility. South China has a lot of rain water, generally open border planting, border wide package ditch one point three Rice, double row, row spacing sixty-five Cm, plant spacing thirty Cm, per mu three thousand and five hundred The planting rate per mu is about five hundred It can be planted directly in summer, autumn and winter. If it is to be put on the market earlier, it can be covered with film three The leaves were transplanted by breaking the film. Live broadcast two Seeds, and then along each hole covered with rotten farm manure (such as soil manure, pig manure, etc.), per mu two thousand three thousand and five hundred Kilogram. If it is mixed in farm manure in advance fifty seventy Kg SSP is better. The soil moisture should be sufficient when sowing, otherwise irrigation should be done in time after sowing.
three
Field management
    
one )Weed control       

After sowing one two Within days, use back sprayer and atrazine herbicide to control weeds in seedling stage, with a barrel of water about thirty Kilogram plus fifty Clarisso and fifty Ketatrazine, about spray per mu three four A bucket of liquid medicine.
   
two )Transplanting, replenishing and planting       

When the seedlings grow to three When transplanting leaves, it is necessary to replant the missing plants and holes. It is better to replant in the evening and cloudy days. The seedlings should be covered with soil and watered with appropriate amount of water after planting. four five Planting in each hole one Strains.
   
three )Fertilization     

Heavy application of base fertilizer (seed fertilizer) and bell mouth fertilizer [after elongation ten It is suitable to apply seedling fertilizer, jointing fertilizer and grain fertilizer. Farm manure is used in combination with chemical fertilizer. Nitrogen fertilizer was applied in the whole period, phosphorus fertilizer was mainly applied in the base (seed fertilizer), and potassium fertilizer was mainly applied in the middle stage. In general, nitrogen and phosphorus are the main fertilizer in the early stage of powder spreading, and phosphorus and potassium fertilizer are mainly used from powder dispersing stage to milk ripening stage. The specific dosage should be determined according to the soil fertility level and plant growth, so as to keep the growth strong and the leaf color normal or dark.

four )Watering     

Soil relative humidity before jointing stage sixty %~ eighty %It can induce the root system to develop in depth. The booting, heading, flowering and filling stages are the most water demanding periods for sweet corn. It is necessary to maintain sufficient water to facilitate the growth of ears and increase the grain size.

five )Cultivate soil to prevent lodging     

  In order to keep fertilizer, resist lodging and promote the growth of roots and plants, it can also cover some weeds.

six )Pest control  

  At sowing time and before harvest, pay attention to prevent rats from biting seedlings and green bracts. Pay attention to prevent mole cricket and armyworm from biting root and leaf during seedling emergence. Generally available one thousand and two hundred one thousand and five hundred Dipterex can also be used to irrigate soil ninety %Trichlorfon crystalloid one Kg Add some water to stir fry rice bran or bran fifty one hundred Kg / mu four eight Kg Trapping and killing underground pests. Attention should be paid to the control of corn borer, armyworm, aphid and other pests in the growing period. It can be used to control borers and aphids in large bell mouth stage ninety %Trichlorfon one thousand and five hundred two thousand It can be used for armyworm with deltamethrin vinegar one thousand one thousand and five hundred To prevent and cure. Before picking seven ten No pesticide should be sprayed in the day (day).

seven )Assisted pollination
During the flowering and pollination of sweet corn, in case of cloudy or low temperature weather, artificial pollination should be carried out in time to improve the yield and quality of the ear.

four Harvest and storage
      
Huazhen sweet corn from sowing to harvest green bud, spring sowing eighty eighty-five Autumn seventy-five eighty God. When the grain is golden yellow, the green bud is harvested, and the normal spring and autumn planting is about after flowering twenty-four twenty-six Days, late autumn sowing is needed thirty forty The mature period of the whole field was the same, which could be harvested once or in batches. Green bracts should be eaten immediately after harvest, or refrigerated and processed step by step, otherwise the sweetness and quality will decrease.

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