How to manage dropper cotton seedlings

The task of cotton seedling management is to promote the growth of cotton seedling roots and the normal development of the shoots on the basis of Miaoquan, Miaoqi and Miao uniform, and achieve the objective of early stable growth and strong growth of cotton seedlings. Lei lays the foundation. The main measures for field management at seedling stage are as follows:

Put the seedlings and seal the soil: The land after raining should promptly break down the soil and help the seedlings unearthed. The planting of the dislocated cotton seedlings breaks the film and releases the seedlings promptly after breaking the soil, and the membrane holes are covered with fine soil, and the seedlings are prevented from being released at noon so as to prevent the high-temperature burn of the cotton seedlings.

Timely setting seedlings: When cotton seedlings start growing, the seedlings begin to be set. When two true leaves end, pay attention to weak seedlings, retain strong seedlings, go sick seedlings, leave healthy seedlings, and achieve one seedling and one seedling without leaving two plants, and promote cotton. The seedlings grow neatly and robustly, avoiding the emergence of stagnant seedlings or the sudden increase in temperature and growing into "high-legged seedlings."

Intertillage: The cultivator can eliminate weeds, increase the temperature of the ground, keep the soil at the bottom, improve the respiratory conditions of the root system, and promote the growth and height of cotton twigs. Miao early hair. Before general topping water, cultivator loose soil should be used 2 to 3 times or more. For thin sand land, the cultivator should be shallow, and the cultivator depth should be deepened successively for the cotton field with an impermissibly long trend. The depth of the cultivator is between 5 and 7 centimeters for the first cultivator and the first cultivator, and the second time after the intermittent seedlings, the depth is 8 ~10 cm; 3rd time before budding, depth 10-15 cm. The cultivator must be able to afford large blocks of land and not to injure the seedlings.

Dripping seedlings: dry sowing wet cotton field 10 drops of water is appropriate. Surface runoff is strictly prohibited. In addition, the tail capillary must be knotted and deep buried. The trunk and branch pipes must be compacted with soil to prevent the wind from lifting the membrane.

Seedling control: seedling control can promote the development of the root system, reduce the emergence of two fruit cotyledons after the emergence of green flat for the first time, the use of polyamines 0.5 ~ 1 g; 2 to 3 true leaves when the first Secondary control, mu 1.2 ~ 1.5 grams of dilute amine, 30 kg of mechanical spray on the water. The amount of drug is generally controlled according to the characteristics of cotton seedlings and growers. Protective measures must be taken during mechanical operations to avoid mechanical damage to the drip irrigation system. The general control of simultaneous application of 50 grams of urea urea + 150 grams of potassium dihydrogen phosphate for foliar dressing. Chemical control before the fight drugs machine to use detergent or alkaline soak 24 hours cleaning.

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