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Difference In Cotton Growth In 2010

2010/6/30 11:37:00 33

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In the normal climate year, the cotton plants pplanted with nutrition bowl seedlings usually begin to bud in the first ten days of June. From this year to June 15th, through the investigation in some rural areas of Hubei Province, we can see that the buds in the bud are

cotton

Rarely, the growth period is delayed at least 10 days.

Not only has the birth been postponed, but also the seedling age is very different. Among them, the largest cotton seedling already has 3-4 layers of fruit branches, the smallest cotton seedling has only 4-5 true leaves, and the seedling age is 25-30 days apart.

The reason for the late emergence of cotton seedlings is mainly caused by low temperature, rainy weather, little accumulation of accumulated temperature and insufficient illumination.

It was earlier in the open field than in the open field. Two, the cotton stubble was planted in the cotton row, because the wheat seedlings were planted earlier in the cotton planting line, and the spring flowers were the second, and after the wheat pplanting was the latest; the three was that the fertilizer application was different, the seedlings with enough basal fertilizer were earlier than the others, and the seedlings with less basal fertilizer were not released in time; the four was the soil texture was different; in the rainy year, the seedlings in the soil field were relatively earlier, the water content in the sandy land was higher and the seedlings were later; five, the drainage conditions in the cotton fields were different, the drainage conditions were different, the drainage was good, the drainage was good, the drainage was good, the underground water level was low, and the seedling emergence was earlier. The reasons for the disparities of seedling age are: first, the way of raising seedlings is different. The seedlings sprouting with plastic film mulching and nutrition bowl seedling pplanting are earlier.

Though this year

Cotton seedling

Sooner or later, the gap is very different, but the ability of cotton self regulation is stronger and the recovery rate is faster.

Because most of the cotton is grown with nutrition bowl, pplanting and plastic film mulching. Although the smallest cotton seedling has only 4-5 leaves, it can begin to flower bud differentiation after 3 true leaves. When cotton enters the bud stage, a fruit branch is generally spread on the 3 day. When the fertilizer water temperature and light can be satisfied, a fruit branch will appear on the 2.5 day. If the high yield shelf can be set up in mid July, it will lay a good foundation for high yield of cotton.

In order to promote the main reason, the seedlings should be given good fertilizer. For the younger cotton seedlings, we should catch up with the fertilizer with the quick acting nitrogen fertilizer.

Especially if the base fertilizer has not been applied, it should be applied more quickly.

Seedling fertilizer

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It can also be sprayed once every 7-10 days with 800 times liquid of humanfeng or Chuang Fuxing active liquid fertilizer, for 2-3 times.

For the cotton entering the bud stage, we should stabilize the household fertilizer, mainly by decomposing farmyard manure, or applying bio organic compound fertilizer 50 kg per mu, 15 kg of potash fertilizer or 25-30 kg of compound fertilizer with high content, 10 kg of potash fertilizer, 0.2 kg of boron and 0.5 kg of large grain zinc.

According to the forecast of the meteorological department, the rainfall may be abundant in 6-7 months, which is conducive to the occurrence of Fusarium wilt. Now the wilt disease in the field shows that increasing the application of organic fertilizer and potash fertilizer can enhance the defense and recovery growth of Fusarium wilt.

Cotton plantlets with high yield and plant shape in the Southern cotton region entered the peak period of -7 growth in late June.

The average daily growth of the main stem of cotton grown normally is 1.5-2 cm, and the average length of cotton growing on average is 5-6 centimeters per day. Cotton fields with too much nitrogen fertilizer or excessive total amount of fertilizer are easy to grow and grow.

Now there has been emergence of cotton seedlings with vigorous growth and main stem width exceeding 15 cm. Spraying of vitamin 4, 4 kg per mu, or 1 kg of water and 15-20 kg of water.

Fully applying conventional measures to increase production is to clear the gully and drain the soil, to carry out the deep ditch to carry out the field, so that the water can be discharged quickly, quickly and quickly. Two, it is plowing and cultivating, one can weed the stubble, two can raise the soil, three can increase the permeability of the soil, four can raise the ground temperature; three is to prevent the pests, the key is the blind weevil and the whitefly.