The situation of cotton production is not optimistic. Experts suggest management pay attention to four points.

The reporter learned from the working meeting of cotton production and high yield creation in the province on August 26 that the situation of cotton production in our province this year is not optimistic. In view of the current reality of cotton production, experts at the meeting suggested that cotton farmers grasp four measures.

This year, cotton production in our province is characterized by a decrease in area, a decrease in per unit yield and a decrease in total yield. According to incomplete statistics, the actual harvest area of cotton in the province is about 11 million mu, more than one million mu less than the previous year, with an estimated cotton yield of 70,075 kg and a total output of 75-800000 tons, a decrease of more than 100000 tons. The main characteristics of cotton production this year are as follows: first, the climate is extremely abnormal and the disasters are serious. The abnormal low temperature weather in spring caused the postponement of sowing date and the overall retardation of cotton growth, the high temperature in July caused serious shedding of high-yield cotton fields, and the continuous overcast and rain in August. In particular, the main cotton-producing areas in northwest Shandong, such as Dezhou, Liaocheng, Binzhou and Dongying in the north of Shandong, were affected by severe waterlogging, with cotton production reduced by more than 30% and a total yield area of more than 200000 mu. The second is the imbalance between regions. Compared with northwestern and northern Shandong, although the area of double cropping cotton in southwestern Shandong has declined seriously, cotton is growing well, and some per unit yield is expected to reach new highs. Third, the area adjustment is large. Due to the low efficiency of cotton planting and the change of subsidy methods for improved cotton varieties, the area of some cotton planting cities has changed greatly this year. Southwest and northwest Shandong decreased by more than 30%, and the cotton planting area of coastal saline-alkali land in northern Shandong increased greatly.

In view of the current situation of cotton production, especially the recovery of production after the disaster, the meeting put forward four technical measures: first, to grab rotten bolls and reduce losses. Due to the rain and waterlogging, there are rotten bolls in most cotton fields, the boll period is more than 40 days, the boll shell has been yellow and the cotton bolls that begin to appear black spots can be picked off to dry before rotten, and better cotton can be obtained; second, foliar spraying fertilizer to promote boll weight. The fertilizer loss in cotton field is serious after heavy rain. It is necessary to spray foliar fertilizer after rain to improve the nutritional status of cotton plants, prolong the functional period of leaves and increase the boll weight of autumn peaches. Can spray 0.5%-1% urea solution, 2%-3% calcium superphosphate solution or 0.2% potassium dihydrogen phosphate solution 50% 60 kg / mu, once a week, even three times; the third is to remove the old leaf branches for ventilation and light. In the cotton field with luxuriant branches and leaves, the old leaves and ineffective branches in the middle and lower part of the main stem were cut off to improve the ventilation and light transmission conditions and promote the normal maturity of cotton bolls. Fourth, do a good job in the prediction, prevention and control of diseases and insect pests in the later stage. The main control targets are red leaf stem blight, Verticillium wilt, the fourth generation of cotton bollworm, Bemisia Tabaci and so on.