Cotton is a warm, hi-light crop. Therefore, the cotton field should choose a flat or sunny slope above the soil. Cottonseed should be selected, and the germination rate, hairy seeds and light seeds should be removed, and the germination rate should be no less than 90%. Cotton is good. Not resistant to shading. The annual sunshine hours are required to be more than 2000 hours. The sunshine rate is over 40%. Xinjiang and Gansu are more than 60%, which is more suitable. Generally, the cotton base fertilizer applies 20-23 kg of urea per 667 square meters, 50-55 kilograms of superphosphate, 10-12 kilograms of potassium sulfate in the potassium-deficient plot or high-yield field. From emergence to bud, usually 40-50 days, the first 3mm-sized bud on the cotton plant is called bud, and when the main seed of the cotton seed grows 7-8 leaves (not including 2 cotyledons), it is bud. In the cotton seedling stage, it is best to spray photosynthetic nutrient film fertilizer to enhance photosynthesis capacity nutrients and chlorophyll, and to absorb a large amount of light energy, light, compatible with conventional fertilizers and nutrients to supply plant growth and development to the limit. In the bud stage of cotton, cotton growth is measured by the initial bud period, the bud period, and the daily increment of plant height. It is an important period for determining the number of bells. The period from flowering to boll opening, generally 50-70 days (flower see flower, forty-eight), the cotton growth condition is measured by the initial flowering period, full flowering period, belling period, and belling strength. This stage is the flowering and bolling period of cotton. Most of the flowering and bolling periods occur when the branches are mad and the top of the cotton bolls is prominent. Foliar fertilizer topping agent is melted into mother liquor by adding 1 kg of water per bottle, and then added to 500 kg of water to stir and dissolve. Spray on the top of the cotton before and after sitting in the early flowering stage, spray three times in a row, each interval of 7-10 days. Force the top of the cotton back to the development of the cotton, weakening the top advantage until the top stops growing. Thereby achieving the purpose of topping. It can effectively improve the canopy permeability of the cotton field, prevent premature aging, increase the effective boll weight, increase the yield, and increase the cost.
Agricultural PO film is a high-tech coating product, and is an upgraded product of EVA film,Po film is widely used in Light Deprivation Greenhouse.PO film is a new type of agricultural film produced by external spraying drying,process with advanced olefin raw materials and other additives in Japan. It has outstanding comparative advantages with traditional PE film and EVA film on the market.It has outstanding comparative advantages with traditional PE film and EVA film on the market and is widely used in Strawberry Greenhouse.
Advantage:
1.Excellent transparency: low fog, high transparency high light transmittance, low scattering rate, so it will heat up quickly in the morning.
2.Super continuous fogging and dripping ability: using fogging and dripping agent coating and drying treatment, can inhibit the generation of fog, fogging and dripping period can be synchronized with the service life of agricultural film.
3.Strengthen heat preservation performance: adopt high-tech special organic heat preservation agent, effectively control heat loss, effectively prevent the sudden drop of night temperature caused by freezing damage to crops.
4.Long service life: the use of high-tech antioxidant and light stabilizer, greatly extend the service life of agricultural film.
5.Super tensile strength: raw materials have super tensile strength and tear strength.
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Qingzhou JuLong Agriculture Equipment Co.,Ltd , https://www.julonggrowtech.com