Most Of The Cotton Planting And Seedling Emergence In China Last Week Were Normal.

< p > according to the Central Meteorological Observatory, in April 21st, 27 weeks in -4, Xinjiang, the Yellow River basin and Yangtze River valley cotton area < a target= "_blank" href= "http://www.91se91.com/" > strong > cotton > /strong > /a > most of them are in seeding and emergence stage.

It is the first step to ensure the high yield of cotton.

The main direction of cultivation is to achieve "five seedlings", that is, "early, full, neat, uniform and strong".

"Early" is suitable for seeding and early seedling emergence; "full" is that there is no shortage of seedlings to break ridges and ensure planned density; "Qi" is that cotton seeds are sprouting and sprouting regularly and uniformly; "uniform" is the uniform distribution of cotton seedlings; "Zhuang" is that cotton seedlings grow stout, root growth is rapid, and finally realize the early flowering and early boll opening of cotton.

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< p > recently, in Northwest China, the temperature was high and the sunshine was adequate. 5~12 millimeters of precipitation appeared in southern Gansu and other places, which improved the surface soil moisture of the soil and was conducive to spring sowing. However, the overall precipitation was relatively low, and there were varying degrees of drought.

The temperature in the eastern part of North China and most parts of Huang Huai is 1~2 degrees below the normal temperature, but the temperature slowly rises, which is conducive to the growth of spring sowing and < strong > a href= "http://cailiao.sjfzxm.com/Matertial/show/material.aspx" > cotton seedling < /a > /strong > growth; however, there is no effective precipitation in the southwest of Shanxi, the northern part of Henan and the northern part of Anhui, and the soil moisture continues to decrease and the drought develops.

The temperature of most parts of Jianghuai and Jianghan was low. Among them, the southeastern part of Jianghan and the southwest of Yangtze Huaihe River were 2~4 degrees lower than that of the Changjiang Huaihe River. It was fine and little rain. It was basically beneficial to cotton seedling raising. However, the average daily temperature of 21-22 days in the eastern part of Yangtze River and the eastern part of Yangtze River and Huaihe River was below 12 C, which had a slight effect on the growth of cotton seedlings.

Xinjiang is an important cotton producing area in China. Most cotton varieties in Xinjiang are early, middle, early and early maturing, and are not sensitive to light length.

Recently, there are more sunny weather in Xinjiang, and cotton is also a light loving crop, which is suitable for growth under more adequate light conditions.

< strong > a href= "http://cailiao.sjfzxm.com/Matertial/show/default.aspx" > Xinjiang cotton > /a > /strong > light compensation point and light saturation point are all high.

According to the determination, the light compensation point of cotton single leaf is 750~1000 LX, and the light saturation point is 7~8 LX.

Generally speaking, the suitable range of light intensity for cotton leaves is 8000~70000 LX, and the photosynthetic intensity increases with the increase of light intensity.

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In addition to the sun, water is also a key element of cotton planting. P.

Water is an important component of cotton. The growth of cotton needs to absorb water from the soil.

It is expected that next week, most of the northern part of the temperature will be near or high. In the northwest and North China, most of them are 2~4 degrees high. In the eastern part of Northwest China, the eastern part of North China, Huang Huai will have moderate to moderate rain. The moisture content in some areas will be improved. However, there is basically no effective precipitation in southwest Shanxi and northwest Henan. The drought will continue and will be unfavorable for the growth of spring sowing crops.

It is suggested that the northwest, North China and other places should promptly check seedlings and replant, so as to avoid shortage of seedlings and ridges.

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