Planting Technology Lists
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The normal use of tribenuron before winter has little effect on the following cotton.
Liu Wen, Hengjing Town, Gaoyou City, called to say that he sprayed benzenesulfuron in the wheat field. According to the instructions, the dosage of 10% benzenesulfuron was less than 15 grams per mu. He heard that tribenuron-methyl, chlorosulfuron-methyl and metsulfuron-methyl belong to the same class of herbicides, and the residual periods of chlorosulfuron and metsulfuron-methyl are all very long, which often cause residual damage to subsequent crops. I don't know how long the residual period of tribenuron-methyl is, and whether cotton planted in the field sprayed before winter will be affected by drug residues. Tribenuron-methyl is a common herbicide to control broad-leaved weeds in wheat field.
2019-01-15 -
Occurrence regularity and Control of Cotton pests under drip Irrigation
With the large-scale application of drip irrigation cotton technology, its irrigation mode has been improved, and it transports water and nutrients uniformly and continuously to the vicinity of cotton root system, and the matching techniques of cotton cultivation are changed. as a result, the ecological environment and occurrence law of pests in cotton field have changed accordingly. Therefore, it is necessary to find out the occurrence regularity and control measures of cotton pests under drip irrigation under plastic film, so as to ensure a sustained and balanced yield increase of cotton. 1. Cotton bollworm 1. Compared with previous years, the degree of occurrence was moderately severe in 2005.
2019-01-15 -
Demian 800f1 Cotton
Demian 800F1 is a new hybrid cotton variety with high yield, high quality and multi-resistance developed exclusively by Denong Zhengcheng Seed Industry Co., Ltd. Approved by Anhui Province in 2005. Characteristics The whole growth period of this variety is about 134 days, belonging to medium maturity varieties; plant tower type, strong growth, strong boll setting, big peach, thin boll shell, smooth opening, easy to pick, cotton fiber quality is good, lint 42.1%. High resistance to cotton bollworm and pink bollworm; high resistance to Fusarium wilt, resistance to Verticillium wilt, three peach full set, resistance to high temperature and drought, and not premature senescence, strong resistance; pre-frost flower rate 86
2019-01-15 -
Current cotton technical management measures
First, do a good job of seedling bed management. 1. Timely ventilation and humidity reduction, seedling weeding. Cotton seedling cotyledons spread flat to green, timely small ventilation to reduce humidity for 1-2 days, seize the sunny and warm weather, sun board to reduce humidity, set seedlings to weed. 2. Do a good job in cotton seedling blending. Cotton seedlings are picky and should be adjusted timely when they begin to produce true leaves. 1 bag of special biochemical preparation for seedling bed is used in each mu of standard seedling bed, 2kg is mixed with water, and sprayed evenly to prevent cotton seedlings from rising and forming tall seedlings. 3. Adjust the temperature scientifically. Pay attention to two points in bed temperature regulation: one is persistence.
2019-01-15 -
Current management measures of cotton
Recently, there has been a series of moderate to heavy rain and local torrential rain in our district, resulting in waterlogging in some cotton fields. At present, cotton is about to enter the flowering and boll setting period, due to waterlogging to promote cotton root senescence, will affect the normal flowering and boll setting, resulting in the reduction of cotton yield and quality. Therefore, the following management measures should be taken to ensure high cotton yield. 1. Timely drainage. By all means, waterlogging in the cotton field should be eliminated as soon as possible to ensure the dispersing of moisture and ventilation in the cotton field, and to strive for the root system to return to normal growth and promote flowering and boll setting as far as possible. 2. Chase
2019-01-15 -
Nitrogen and Cotton Nutrition
1. Nitrogen in cotton: the average content of nitrogen in plants accounts for about 1.5% of the dry weight (range 0.3-5.0%). Cotton seeds contain 2.8-3.5% nitrogen, fiber 0.28-0.33%, and stems 1.2-1.8%, which are crops with high nitrogen content. According to the experiment, lint yield per mu is 62.7 to 94.7 kg, nitrogen accumulation from emergence to budding stage accounts for about 4.5%, from budding to flowering stage accounts for 27.8% and 30.4%, and from flowering to boll opening stage accounts for 59.8%.
2019-01-15 -
Beware of the outbreak of cotton red leaf stem blight after heavy rain
Recently, the cotton area is generally heavy rain, for cotton after a long drought, it is easy to break out red leaf stem blight. Red leaf stem blight is a physiological disease. It starts from the growing point of the main stem or the top of the fruit branch, and generally develops from top to bottom and from outside to inside. The main stem withers to death but the anatomical vessels are achromatic. The root system is thick and short, and the fibrous root is less poorly developed. Cotton red leaf stem blight outbreak is caused by extensive cultivation of cotton fields, poor development of cotton roots, poor drainage of cotton fields, partial application of nitrogen fertilizer, vigorous growth of cotton,
2019-01-15 -
What if the cotton is flooded in Greater Heat's season?
Lesser Heat and Greater Heat are in July. This month is the hottest month of the year. It is necessary to do a good job in flood control, summer heat prevention and drought relief, timely rush harvest of early rice, application of tiller panicle fertilizer in middle rice, loosening soil, topping, applying flower fertilizer in cotton, and controlling red bollworm and cotton lacewing insects. Rush to plant late autumn crops at the right time. Do a good job in ventilation and cooling of livestock and poultry cages to prevent human and animal heatstroke. Most of the cotton fields in our province are in a state of dark stains at present. At present, cotton is in the most critical period of transformation from vegetative growth to reproductive growth, and it is also the most critical period for the increase of cotton buds and bolls, so emergency management should be taken immediately.
2019-01-15 -
A New Big Boll Cotton Variety Cotton Suijie Anshuofeng 9
Characteristics: this variety was selected by purification and rejuvenation on the basis of the original Shuofeng 9. The plant is tall, the stem is strong and hard, the plant type is loose, the fruit branch is longer, and the hairs are less. The leaves are hypertrophy and dark green, the bolls are large and long oval. The seedling is good, the seedling is neat, the growth is prosperous in the early and middle stage, and the growth is stable in the later stage. The fruit branch has the advantages of low node position, good boll setting, smooth catkin, easy to pick flowers, 91.0% pre-frost flower rate, fiber length 31.1 mm, excellent fiber quality, and belongs to high-quality cotton variety. The growth period is 125 days and the plant height is 110-130 cm. Comprehensive character stability, resistance
2019-01-15 -
Dafengza 312 (Cotton)
The seedling emergence is good, the cotyledons are medium and large, the leaves are green, and the growth is strong in the whole growth period. The plant is tower-shaped, the plant is tall and the stem is stout. The leaves are larger and darker. The boll forming ability is strong, the bell is oval, large, the bell shell is thin, spitting fluffy. The average results of the provincial regional test were as follows: growth period 138days, plant height 113.8 cm, fruit branches 18.2, bolls per plant 24.9, single boll cotton weight 5.9g, large sample lint percentage 39.7%, small sample lint percentage 40.7%, seed finger 10.6g, pre-frost flowering rate 89.3%. Fibre
2019-01-15