The period from the emergence to the emergence of cotton is called the seedling stage, and the time is 50--60 days. If seedling management is timely and scientific, cotton seedlings will grow robustly, budding early, blossoming, and tying bells early. The yield is high, quality is good, and benefits are high. If the management is not timely, the growth will be slow and the cotton seedlings will be thin and weak. The main task of seedling management is to promote vegetative growth and achieve early growth of strong seedlings. The measures for seedling management are the “early†word first, early seedlings for early warning, early seedlings for early warning, and laying the foundation for a good cotton harvest.
1, early spray auxin, promote rooting long leaves.
After cotton is transferred or 1- to 2-leaf, 3000-times of 1,8% love to receive more water to promote the growth of roots and stems and leaves. For 5--6 leaves, use 0,01% Fuzi 60--80 ml/mu, add 50 kg foliar spray. Promote root, stem, leaf growth and flower bud differentiation.
2, timely support pouring wheat.
During the period of flowering and filling of wheat, in the event of wind and rain, it is necessary to provide timely support to ensure sufficient light and ventilation conditions for cotton seedlings.
3, early pests.
The temperature is higher in the early spring this year, and insect pests are more important than in previous years. The main pests are ground tigers, seedlings and red spiders. The use of poison baits for control of tigers is very good. The method is: 50 kg of wheat bran, 0, 5 kg of crystal trichlorfon, 0, 5 kg of vinegar, and 12-15 kg of water. Dissolve the medicine, sweet and sour water in water, and mix the wheat bran with sprayer while mixing. Four to five kilograms per mu were spread in the roots of cotton seedlings in the evening. In order to protect natural enemies, it is necessary to use stalks or hearts to control locusts and spider mites. The method is: using monocrotophos, oxidized tung fruit or early amine phosphate, 0, 1 part of sustained release agent, and 5-6 parts of water. The preparation method is to boil water and slowly add polyvinyl alcohol, until it is fully deepened. After cooling and pesticides Serve. Using a small wooden stick with cotton, apply a slow-release agent to the red-green border of the cotton seedlings. If red spiders occur, they must be reapplied twice every five to seven days to kill eggs and nymphs.
4, timely cultivator, extermination.
Cotton is a thermophilic crop, with a warm temperature, rapid growth, and mild disease. The rural language said: “It was warm to the earliest days, and it was not as hard as it could be. It was a deep fruit and a deep section.†The method is “the first time shallow, the second deep, and the third time.†In the cultivator, you are on the "timely" and "deep" characters.
5, timely fertilizer and water management.
The base fertilizer is sufficient for the cotton field, generally do not top-dressing, if the base fertilizer is insufficient, it can make up the application of the plough with the application of the general plough, 50 kg per mu of cake fertilizer or high-quality agricultural and agricultural fertilizers 500 ---1000 kg, urea 5--8 kg. Potash 10 kg, phosphate 20 kg. If the weather is dry, it can be combined with topdressing, and small watering or shallow watering can be done in time to prevent flooding.
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