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Changde'S Late Cotton Management Needs To Be Strengthened

2010/7/22 11:49:00 27

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Cotton Seedling Pplanting Cotton Cotton Growth

This year, Changde, Hunan

cotton

Cotton production in major production areas has been suffering from calamities, and cotton growth is worse than normal.

Now let's sort out the impact of adverse weather on cotton growth in stages.

First,

cotton

During the seedling period, the temperature of the seedlings was delayed by about 10 days.

Two. During the pplanting period of the nutrition bowl, it was rainy and continuous. According to the data provided by the Hunan Climate Center, the average precipitation in Hunan in May was 245.8 millimeters, which was 21.6% more than the average in the past years, 53.9% more than last year. This resulted in the rapeseed could not be harvested normally, the pplanting of cotton seedlings was postponed, and the incubation period was postponed for 3-5 days.

Three.

Cotton seedling pplanting

Later, due to the large soil humidity and low temperature, according to the relevant data, the rainy weather in the south of the Yangtze River in June, and the continuous wet weather of the soil will affect the growth and development of cotton.

The average temperature in June was 25.3 degrees, which was 2 degrees lower than that in the same period last year.

The rainy days in June reached 15-20 days, and the average sunshine hours were less than 45 hours per year, which led to the occurrence of Fusarium wilt. Most cotton fields had made up seedlings in time, but there was a big difference between the growth rate after the seedlings and the earlier pplanting cotton plants; another part of the cotton fields caused the lack of seedlings because of the lack of timely seeding.

Four, around July 11th, the local heavy rain (Anxiang government network news), as of July 12th at 8 o'clock in the morning, most counties in Anxiang County rainfall more than 100 millimeters, two towns and more than 150 mm, the county's 400 thousand acres of crops affected by the disaster, when the cotton budding and flowering period is seriously affected by cotton, cotton field water is serious, due to poor drainage, rain soaked after stem and leaf damage, slow down the growth process, buds fall off the phenomenon is widespread, individual low-lying land is the emergence of cotton seedlings root rot seedlings, high temperatures after exposure to rain weather is a significant increase in mortality.

Affected by the adverse effects of previous factors, the local cotton growth polarization is more serious. The cotton fields with plastic film mulching and some early pplanting and better cotton planting have strong roots and strong resistance to natural disasters. The cotton is growing well. At present, the height of the plants is more than 1 meters, and there is no open space between the rows and rows of cotton seedlings. However, the ability of cotton fields to resist natural disasters is relatively weak after being pplanted late and not in place. At present, the growth is terrible. The worst cotton plant height is only more than 20 cm, and the fruit branches are just beginning to grow. The visible space between the rows and rows is more than 50 centimeters.

Judging from the current situation, this year

Cotton growth

It is not optimistic. In the middle of July, there was no shelf for high yield. The average fruit branch was only about 7 / plant, with an average bud less than 13 / plant.

In the same period last year, the average fruit branch was 12.1 plants per plant, with an average of 36.1 buds.

Cotton growers generally expect cotton seed yield to be only about 450 Jin this year, a record low in recent years.

However, because cotton is an indefinite growth crop and has a strong self-regulation ability, it can grow 1 fruit branches every 2-3 days after entering the bud stage. Under the condition of meeting the requirements of temperature, light, fertilizer and water, the cotton with weak growth in early stage has an extraordinary catch up ability. The temperature has reached the normal level in the past years. Under the condition that the seed cotton price is high this year, cotton farmers have not given up the cotton production this year. At present, the cotton field is being intensified to weed, fertilize and moderate the production, so as to strive for a good harvest of cotton production this year.