The main target of cotton seedling management is to “bring strong seedlings and promote early-onset seedlings†on the basis of sowing of whole seedlings.
First, cotton film timely release seedlings, soil sealing, strong seedlings
After the cotton seedlings are unearthed, the cotyledons flatten out from yellow to green, and they must be promptly broken and put on the seedlings. When the seedlings are released, they should be placed before the 10 o'clock in the morning and after 4 o'clock in the sunny days without wind. After the "May 1st" festival, the temperature in the membrane is as high as 50 degrees. If it is too late to put the seedlings on the membrane, take 3-5 meters on the membrane first. Use a stick with a pointed tip to pick up some small holes to reduce the temperature in the membrane. Anti-high temperature burning seedlings, and then one by one Fangmiao. When the cotton seedling grows to the top of the mulch, use fine soil 7. ç¶ç¼ˆ 诜舛潞茫 诜舛潞茫 啬ãœç»¦ 啬ãœç»¦ 啬ãœç»¦ 啬ãœç»¦ 鸬 鸬 鸬 鸬 I I I test Xinlong 7. æ¶ hard è† ãš ãš ãš è¶ç¼ç»¶ è¶ç¼ç»¶ è¶ç¼ç»¶ 19 (19) 饔谩 / / P>
Second, check seedlings in time
After the emergence of cotton seedlings, seedlings were promptly inspected for seedlings. Less than 50% of seedlings shall be destroyed in time. If the distance from the seedling to the seedlings is 30-50 cm, it can be settled by keeping two seedlings close to each other, or leaving the leaves to be settled; First, replant seedlings with seeds that have been soaked and germinated or later transplanted by sprouts and transplanted with a transplanter on behalf of Taiwan to make up for the seedlings in every possible way to lay the foundation for a reasonable dense planting.
Third, suitable time seedlings, late Dingmiao, reasonable dense planting
In normal years, the general cotton seedlings are promptly planted early after seedlings to avoid seedlings and seedlings, and concentrate nutrients for strong seedlings. However, this year, it is cold and cold weather. In spring, when the late-planting of cotton is delayed, it is necessary to adjust seedlings. Therefore, the seedlings should be planted for a suitable period of time. The first tree should be opened until the cotton seedlings grow 1-2 true leaves. Then between the seedlings, in the weak seedlings to retain strong seedlings, such as cotton seedlings grow four true leaves when Dingmiao. When setting seedlings, attention should be paid to the density of seedlings. The density of cotton should be determined according to the characteristics of soil strength, climate, and characteristics of cotton varieties, and it should be planted to a reasonable density. In line with the principle of “distance between rows, distance between plants, and density,†the yield is high under the premise of established row spacing. The average plant spacing of cotton fields is 25 cm, and the number of mu plants is around 3300-3500, which creates a suitable population structure for high cotton yield. However, with the late arrival of cotton late this year, the number of acres can be appropriately increased, but the maximum number of high-yield cotton fields is no more than 4000 plants/mu.
Four, more cultivating loose soil, to promote strong seedlings early
As the saying goes, "Shantou has fire, water, and fertilizer." Cotton is planted in cultivator for cultivating tillage, which has the effects of increasing temperature, keeping earthworms, spreading moisture, breaking the board, aeration, and promoting root growth. According to investigations, our county has been in recent years. Farmers do not pay attention to the management of cotton seedlings, and especially do not pay attention to cultivating loose soil in the seedlings of cotton fields, resulting in compaction of cotton fields, shallow ground and arable layers, poor ventilation, low temperature, slow growth of cotton seedlings, and even the formation of weak seedlings. "Zhuang Miao first strong roots, deep rooted leaves Mao", with a strong root system, cotton seedlings can be early and strong seedlings, especially continued low temperatures this spring, we should pay more attention to cotton cultivator cultivator, to promote strong seedlings early. Vigorously promote mechanized cultivator, improve quality and efficiency, and reduce labor intensity. Generally, 3-4 times of cultivating loose soil in seedling stage, the depth of cultivating depth is successively deepened to 4-5 cm, and cultivating is conducted in time after each rain and after watering.
Fifth, prevent and treat seedling diseases and insect pests to ensure early growth of strong seedlings
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