Cotton in the cotton area due to fertilization

In recent years, wheat production in some major cotton-producing areas has changed, mainly in three aspects. First, the sowing period is generally postponed; the second is that some wheat fields are not planted at the time of planting or the base fertilizer is insufficiently applied; the third is that the wheat heading and filling stage often occurs locally or in pieces. In response to these problems, the production method needs to change the fertilization method according to local conditions.

The application of available nitrogen fertilizer for delayed seeding of delayed seedlings was sensitive to nitrogen in wheat seedling stage, delayed tillering of delayed wheat seedlings, insufficient individual development, and reduced total number of stems per acre, which directly affected yield. For this type of wheat field, one must grab the smashing and smashing the fertilizer, and apply 8 kg of urea per mu. Second, according to the seedlings, the fertilizer should be applied, 25 kg of ammonium bicarbonate per acre; the third should be sprayed from the heading to the milking stage. Potassium dihydrogen phosphate 1 to 2 times, each time 100-150 grams per acre to increase the weight of 1000.

Control fertilization of wheat fields with good soil fertility and strong growth. Some wheat fields have good soil texture and strong fertilization capacity. In addition, the amount of peach fertilizer applied to the former cotton field is large, and there are many residual fertilizers in the field. The temperature is suitable and the environment is good. The next wheat seedlings are prosperous. If the weather occurs during the heading and filling period, the plants will easily fall. For this type of wheat field, the amount of fertilizer should be controlled.

Differentiate the situation of the seedlings and promote the control reasonably. For wheat fields with weak growth, it is possible to spray Huimanfeng active liquid fertilizer at the right time to promote early tillering, early heading and early maturity of wheat. For the overgrown wheat field, you can use 15% paclobutrazol WP 40-60 g or 5% uniconazole WP 25-30 g per acre, add 40-40 kg of water spray, control the growth and prevent plant lodging. .

(Chong Nong)
Farmers Daily