Cotton Preparation, Planting And Sowing Technology In China

< p > < strong > 1. What are the climatic conditions of several large cotton growing areas in China? < /strong > < /p >

< p > we all know that according to the ecological and production conditions, China's commercial cotton planting areas are divided into the Yangtze River Basin, the the Yellow River River Basin, the northwest inland area and the Liaohe River Basin, among which the area of Liaohe cotton area is relatively small.

The spring climate in different cotton regions is different. The characteristics are as follows: < /p >

< p > the Yangtze River Basin has many rainy days, high humidity, low temperature and less sunshine. The main disadvantage is the rotten seed rot caused by low temperature and high humidity.

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< p > the the Yellow River river basin is dry and rainy in spring, the temperature rises faster and the sunshine is more.

The main unfavorable factors are drought. There is "spring rain as expensive as oil". Before planting, irrigation is needed to create moisture, there are also cold and cold waves, and rotten seeds are rotten buds.

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< p > Northwest inland for desert oasis agriculture, irrigation cotton planting; spring temperature rise quickly, temperature difference between day and night.

The main unfavorable factors are strong cold wave and low temperature freezing injury.

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< p > > strong > two, < /strong > < a > href= > http://www.91se91.com > strong > cotton production > /strong > /a > strong > What are the steps of preparation, and what are the differences in the preparation of different cotton fields?

< p > at present, it is the period of preparation for farming. The following steps are taken for cotton production and preparation: < /p >

< p > 1, ready for seed.

The amount of seeding is closely related to planting density and precision seeding.

There are 0.3 to 0.4 kilograms per mu in the Yangtze River Valley.

The the Yellow River river basin is medium density, with 3000~4000 seedlings per mu, and 2 kg / mu sowing. In the northwest high-density planting, the harvest density is 12 thousand to 20 thousand plants / mu, and the precision planting is 2~3 kg / mu.

The amount of seed purchased is usually 10% more than that of seed sowing, so as to be used for replanting seeds.

Seeds should be seeded before seeding to increase germination potential and accelerate seedling emergence.

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< p > 2, sufficient agricultural materials.

These include fertilizer, plastic film, agricultural film, insecticide, fungicide and herbicide, and drip irrigation pipes.

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< p > 3, overhaul agricultural machinery.

It includes maintenance of farm machinery and pformer facilities, maintenance of motor shaft, dredging ditch and canal to ensure smooth flow.

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< p > 4, there are differences in preparation for different cotton fields.

For example, the Yangtze River should be prepared for seedling pplanting materials. In recent years, the Ministry of agriculture has popularized the pplanting of light bamboo seedlings, and should prepare the nursery materials including the nursery matrix, the point plate and the root agent.

The the Yellow River River Basin popularized the weeding film, and the wide film covered the wide film in the northwest.

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< p > strong > three, how < /strong > a href= "http://www.91se91.com/news/" > strong > select cotton seeds < /strong > /a > strong > < /strong > < > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >

< p > Agricultural proverb says that good seedlings grow well, and good ones are half produced.

Therefore, we must choose varieties and good seeds in production.

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< p > one is to select the approved varieties, and the approved varieties are legal.

The two is to select the dominant varieties that the Ministry of agriculture has mainly promoted. The dominant varieties show large yield increase, stable yield and strong resistance in production.

There are also recommended varieties in all regions. Please let farmers see clearly and repurchase them.

The two is to buy seeds from large companies, big companies have credit guarantee, and when they buy, they still leave receipts and other vouchers.

The three is to choose the coating.

The coated seeds were carefully selected to remove the shrunken fruit, leaving the seeds full of healthy seeds, containing fungicides and insecticides, providing a possibility for sowing whole seedlings and preventing diseases and insects.

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< p > in recent years, the Ministry of agriculture has selected the leading varieties. 14 cotton varieties have been selected this year. According to the regional distribution, the Central Yangtze River Basin has 63 cotton varieties, 10 F1, 411F1 and suza 3, all of which are insect resistant cotton hybrids.

The dominant varieties in the the Yellow River River Basin are Lu Miyan 28, CMS 41, Zhong Mian 2, CMS 50, Lu Mian 21 and jmian 958, all of which are insect resistant conventional varieties.

The northwest inland dominant species are Xinlu 36 and Xinlu 42, and Xinjiang 35 and CNP 49 in the northern Xinjiang. They are all non insect resistant conventional varieties.

A farmer friend buys seeds to buy a seed coat, and the coated son has been carefully selected to remove the shrunken fruit, leaving behind the seeds full of healthy seeds, which also contain fungicides and insecticides, which provides a possibility for sowing whole seedlings.

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< p > < strong > four, how to realize the whole seedling of one broadcast? < /strong > < /p >

< p > the early emergence of all seedlings and strong seedlings is an important symbol of cotton production.

On the basis of sufficient seeds, the following main measures should be taken to achieve the whole seedlings: < /p >

< p > 1, before planting, soil moisture and irrigation.

The Yellow River irrigation volume of 60 cubic meters / mu, northwest irrigation volume is 80~100 cubic meters / mu.

When the topsoil is white, it shows that the soil is good, and then the soil is prepared. There are ploughing and raking in the soil preparation.

It is necessary to add a remnant film recycling operation, pick up residual plastic film, take it out of the field or bury it deep, or buy waste products.

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< p > 2, fine soil preparation, fine soil.

Soil preparation is smooth, no sundries, no residual film, good soil moisture and sufficient soil moisture.

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< p > 3, timely sowing, advocating suitable early sowing.

The national cotton planting began in late March and lasted until about the end of April.

Seedling pplanting continued until late May.

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< p > timely seeding temperature standard: when the 5 centimeter ground temperature is stabilized by 12 degrees and rises to 14 C in a short time, it is the temperature condition for timely sowing.

Sowing at suitable temperature is only 7~10 days from sowing to seedling emergence.

In production, we can take advantage of cold tail warm head seeding.

In the sowing season, we should observe the ground temperature, pay more attention to the weather and pay close attention to the weather forecast.

The ground temperature of coastal saline alkali areas is slow to recover, usually sowing in the suitable sowing period.

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< p > sowing a few links: first, sowing depth, the general sowing depth is 2~3 cm, when the soil moisture is enough, the sowing depth is 2 cm, when the soil moisture is insufficient, or Sha Rangtu, sowing depth 3 centimeters.

The two is planting according to planned density. The seeding method has hill sowing, 1~2 seeds per hole; seeding is required to be line.

Three is the problem of seed joint operation.

We should combine planting, plastic film mulching, drip irrigation pipes and herbicides to compact both sides of the plastic film and prevent strong wind.

Four is the side seeding edge inspection, prevents the missing seeding.

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< p > 4, post sowing management.

First, we must guard against the gale and lift up the plastic film, compacting both sides of the plastic film.

Two is to fight time to release seedlings, to prevent high temperature burning seedlings.

Three, we should check seedlings and replant, so that there is no shortage of seedlings.

Four, seedlings should be scattered to prevent seedlings from seeding.

Fifth, we should cultivate and weed the soil and raise the ground temperature.

Six, we must prevent pests and diseases and preserve seedlings.

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< p > 5, < a href= "http://cailiao.sjfzxm.com/Matertial/show/default.aspx" > seedling pplanting < /a >.

In order to grow seedlings in nutrition bowl, we should first make seedbeds, fertilize nutritious soil, make nutritious bowl, pplant 2000 plants / mu to make 2500 bowls.

In order to build the greenhouse and seedbed with light weight seedling raising method, we must make an early purchase order with the seedling raising enterprises if we buy cotton seedlings.

Seedbed time: Wheat (oil) field planting seeding period at the end of March, oil (wheat) pplanting in late 4 months.

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< p > < strong > five, the Ministry of agriculture selects 7 main technologies: < /strong > /p >

< p > light weight seedling pplanting is suitable for cotton area in the Yangtze River and the Yellow River River Basin; slow and controlled release fertilizer is suitable for cotton area in the Yangtze River Basin; anti insect cotton early aging and cotton planting in saline alkali soil are suitable for cotton growing area in the Yellow River basin; wide film mulch, drip irrigation under mulch and machine picked cotton are suitable for Northwest inner cotton area.

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