Cotton Boll Period Strengthening Field Management
2018-05-03 17:00:12
At present, cotton is in its flowering and bolling stage. This is a crucial period for the production of production. Production should pay attention to strengthening field management.
Due to the seedling system, the flower and bell-fertilizer (1) should be developed well and the good cotton field should be erected. From July 5 to 10, there were 8 to 10 fruit branches in the plant, and the flowering rate was above 50%. The leaf color began to fade and the early-issued cotton field was planted. The flower and bell fertilizer was applied twice, using the current lyrics to grab the sunny assault. The first flowering boll fertilizer was applied with 25 kg of compound fertilizer and 15 kg of urea per acre. After 20 days, when the cotton plants were tied with 1 or 2 large bells (before the end of July), they applied a second flowering boll fertilizer and applied carbonic acid per acre. Ammonium hydrogen 50-60 kg or urea 20 kg. For a cotton field that is prosperous, it may be controlled first and then promoted, and the amount of fertilizer applied should be appropriately reduced. (2) Cotton fields with good growth and normal development. Around July 15th, there were 6-8 fruit branches of cotton plants, cotton field with a flowering plant rate of about 30%. The flower and bell fertilizers were re-applied one time. Before and after July 20th, the color of the cotton plants faded and the yellow color of the cotton plants declined. After living in large bells, 30 kg of compound fertilizer per mu, 60 kg of ammonium bicarbonate or 25 kg of urea are used. (3) Transplanting late, poorly developed cotton plots. Due to the small size of the individual, we must take measures to spur our efforts to speed up the transformation of the situation and promote the development of the tree. During the flowering and bolling period, two applications of fertilizer are required: for the first time around July 10, 20 kg of compound fertilizer per mu, 25 kg of ammonium bicarbonate, or 10 kg of urea is used as a relay fertilizer; the second time at the end of July, per acre. Ammonium bicarbonate 60 kg or urea 25 kg. (4) Other types of cotton fields. The three-dimensionally planted cotton fields should be cleaned before July 20 and the relay fertilizers should be applied. Boron deficiency, zinc deficiency symptoms of cotton fields, timely spraying of boron fertilizer, zinc fertilizer. Above the type of cotton field in the application, based on the application of flower bell fertilizer, according to the situation and the weather conditions on August 10, according to Pu Shi cover fertilizer, apply urea per acre 8 to 10 kg. In the middle and late stages, pests and diseases are combined and sprayed every 10 to 15 days with Chunquan 883 to spray the fertilizer and spray 3 to 4 times.
Reasonable pruning and control determine the number of reserved vegetative shoots based on the planting density in the cotton field. Plant 1800-2000 cotton fields per acre with 1 vegetative branch per plant; 1500-1800 cotton fields per acre, 2 vegetative branches per plant; 1500 cotton plants per acre, 3 plants per plant Nutritional branches. When the preserved vegetative branches have 5 to 6 fruit branches, the top heart is removed promptly. Around 20 August, the cotton plant topped with 20 fruit branches. There is a long trend of cotton fields, can be used per acre 25% methotrexate 8 to 10 ml of water 20 to 30 kg spray.
Intensifying anti-disaster response measures During the middle and late stages of cotton growth, natural disasters such as typhoons, rainstorms, and droughts are frequent, and various disaster prevention measures must be taken to prevent disasters. Assaults do a good job in the renovation and dredging of the cotton field ditch, so that the "three ditch" supporting, to ensure that the rain stops the dry, sunny days, pay close attention to cultivator loose soil. If there is a drought like an outcrop on a large volcanic day, water or furrow water in the evening. After the typhoon, the fallen plants were planted and sprayed with foliar fertilizer.
Prevention and control of pests and diseases should focus on the prevention and control of blind maggots at the same time, strengthen the inspection and treatment of Spodoptera litura, Bemisia tabaci, cotton bollworm. A large amount of spider mite was planted in the cotton field and it was necessary to promptly rule. In the old cotton area with heavy occurrence of yellow wilt disease, measures such as irrigating the roots and removing the diseased plants are also taken while strengthening the cultivars to control the occurrence and spread of diseases.
Due to the seedling system, the flower and bell-fertilizer (1) should be developed well and the good cotton field should be erected. From July 5 to 10, there were 8 to 10 fruit branches in the plant, and the flowering rate was above 50%. The leaf color began to fade and the early-issued cotton field was planted. The flower and bell fertilizer was applied twice, using the current lyrics to grab the sunny assault. The first flowering boll fertilizer was applied with 25 kg of compound fertilizer and 15 kg of urea per acre. After 20 days, when the cotton plants were tied with 1 or 2 large bells (before the end of July), they applied a second flowering boll fertilizer and applied carbonic acid per acre. Ammonium hydrogen 50-60 kg or urea 20 kg. For a cotton field that is prosperous, it may be controlled first and then promoted, and the amount of fertilizer applied should be appropriately reduced. (2) Cotton fields with good growth and normal development. Around July 15th, there were 6-8 fruit branches of cotton plants, cotton field with a flowering plant rate of about 30%. The flower and bell fertilizers were re-applied one time. Before and after July 20th, the color of the cotton plants faded and the yellow color of the cotton plants declined. After living in large bells, 30 kg of compound fertilizer per mu, 60 kg of ammonium bicarbonate or 25 kg of urea are used. (3) Transplanting late, poorly developed cotton plots. Due to the small size of the individual, we must take measures to spur our efforts to speed up the transformation of the situation and promote the development of the tree. During the flowering and bolling period, two applications of fertilizer are required: for the first time around July 10, 20 kg of compound fertilizer per mu, 25 kg of ammonium bicarbonate, or 10 kg of urea is used as a relay fertilizer; the second time at the end of July, per acre. Ammonium bicarbonate 60 kg or urea 25 kg. (4) Other types of cotton fields. The three-dimensionally planted cotton fields should be cleaned before July 20 and the relay fertilizers should be applied. Boron deficiency, zinc deficiency symptoms of cotton fields, timely spraying of boron fertilizer, zinc fertilizer. Above the type of cotton field in the application, based on the application of flower bell fertilizer, according to the situation and the weather conditions on August 10, according to Pu Shi cover fertilizer, apply urea per acre 8 to 10 kg. In the middle and late stages, pests and diseases are combined and sprayed every 10 to 15 days with Chunquan 883 to spray the fertilizer and spray 3 to 4 times.
Reasonable pruning and control determine the number of reserved vegetative shoots based on the planting density in the cotton field. Plant 1800-2000 cotton fields per acre with 1 vegetative branch per plant; 1500-1800 cotton fields per acre, 2 vegetative branches per plant; 1500 cotton plants per acre, 3 plants per plant Nutritional branches. When the preserved vegetative branches have 5 to 6 fruit branches, the top heart is removed promptly. Around 20 August, the cotton plant topped with 20 fruit branches. There is a long trend of cotton fields, can be used per acre 25% methotrexate 8 to 10 ml of water 20 to 30 kg spray.
Intensifying anti-disaster response measures During the middle and late stages of cotton growth, natural disasters such as typhoons, rainstorms, and droughts are frequent, and various disaster prevention measures must be taken to prevent disasters. Assaults do a good job in the renovation and dredging of the cotton field ditch, so that the "three ditch" supporting, to ensure that the rain stops the dry, sunny days, pay close attention to cultivator loose soil. If there is a drought like an outcrop on a large volcanic day, water or furrow water in the evening. After the typhoon, the fallen plants were planted and sprayed with foliar fertilizer.
Prevention and control of pests and diseases should focus on the prevention and control of blind maggots at the same time, strengthen the inspection and treatment of Spodoptera litura, Bemisia tabaci, cotton bollworm. A large amount of spider mite was planted in the cotton field and it was necessary to promptly rule. In the old cotton area with heavy occurrence of yellow wilt disease, measures such as irrigating the roots and removing the diseased plants are also taken while strengthening the cultivars to control the occurrence and spread of diseases.