Zhongmian 36 High-yielding Cultivation Techniques

2. Planting patterns: The planting patterns of summer cotton include the cultivation of wheat and cotton with two ripeness, the cultivation of oil (vegetable) and cotton, and the cultivation of vegetable cotton (such as cabbage).

3. Planting methods for all-seedling seedlings, summer cotton sowing when the temperature is high, evaporation is large, conventional seeding is difficult to keep the whole seedlings. Many years of practical experience have proven that the use of hydraulic seeds in summer cotton is the best way to plant whole seedlings. The so-called hydraulic seeds are sown after watering.

4. Appropriate close planting, summer cotton harvest mainly depends on the density of high yield, the general density of 4,000 to 5000 seedlings per acre, fruiting branches of 8 to 10 per plant topping, high density early topping the density of seedlings can be up to 6,000, single The fruiting branches have about seven toppings. However, the density must be determined by the strength of the soil, the fertility should be properly sparse, and the poor fertility should be properly planted.

5. Early extermination and early application of fertilizers should be carried out soon after wheat is harvested to prevent weed damage. Summer cotton due to interplanting and cropping, generally not enough time to apply base fertilizer, so early fertilizer, combined with stubble cultivator Mushi diammonium 20 kg, potassium 10 to 15 kg, boron, zinc fertilizer 0.5 to 1 kg. In order to prevent leggy, budding is generally no longer top-dressing. To the flower and boll period to re-chase a flower and bell fertilizer, due to the shorter growth period of summer cotton, flower bell fertilizer to be re-applied to the early flowering period, generally mu recovery urea 15 to 20 kg. In order to promote precocity and prevent late-maturing lust, summer cotton is generally no longer applied top dressing. It is also not suitable for watering at late stage, and can spray 2 to 3 times of phosphorus and potassium fertilizers.

6. Timely control, summer cotton in order to prevent prosperous growth, pay attention to early cultivator, multi-middle cultivator, and deep cultivator at the seedling stage, and to do a good job of chemical control in a timely manner.

7. Timely control of pests and diseases, summer cotton seedling disease is relatively light, but late Verticillium wilt is relatively heavy. The occurrence of insect pests in the second generation of H. armigera was lighter, and the third generation of H. armigera and H. falciparum were heavier and should be measured and reported for early prevention and control.

8. Do a good job ripening, summer cotton generally low rate of pre-flowering, artificial ripening in time, first, ethephon ripening, generally in October 5 -10 days. The second is to pull dry ripening, should be after October 10, when the average temperature is lower than 15 °C when the dry out ripening, not only affect the yield and seed wheat, but also improve the quality of cotton.

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