Cotton management points in rainy days

Cotton likes high temperature and strong light, but in recent times, most parts of Shaanxi have more rainy weather, severe sunshine shortage, lower temperature, and higher humidity in cotton fields, which is extremely unfavorable for cotton production, and the buds are obviously increased. In addition, even the rainy weather caused the cotton fiber to grow normally, the cotton pudding was small, and the boll vomiting time was delayed. The following management measures should be strengthened:

Strengthen the pruning and timely remove the old leaves of the main stem, cut off the empty branches, improve the ventilation and light transmission conditions in the field, and at the same time remove all the ineffective buds and flowers from the upper part to reduce nutrient consumption. At the same time, for the Wangchang cotton field, 98% of the ketamine is used for 2~3g per mu, the cotton field with stable growth is 98% of the ketamine with 1~2g, and the cotton field with poor growth is 98% for each mu. The amine is 0.5~1.0g, preferably before the fertilization.

Picking the lower mature cotton bolls and picking up the yellow bolls on the lower branches of the plants, and spraying them with ethephon solution. For the field of cotton fields and the early decay field, 5~7.5 kg of urea per acre can also be used for foliar spray fertilizer combined with pest control.

Comprehensive control of pests and diseases For the rotten bells and disease bells, once found, pick them in time, and take them out of the field, stripping them at any time to prevent the spread of germs. For blight and verticillium wilt, it should be based on prevention. 500 grams of 25% can be used to make 100 grams of liquid medicine for root irrigation. The diseased field can be re-irrigated 5 to 7 days later, and 0.2% phosphoric acid is used. Hydrogen potassium solution + 1% urea solution, spray once every 5 to 7 days, continuously spray 2 to 3 times.

(An Meng)