Now cotton begins to enter the boll opening period, and the end of the harvest lasts 70-80 days. The management of this period is very important. Today, I will share with you how to manage cotton before entering the spawning period.
How to manage cotton before entering the boll opening period:
First, continue to pruning
After the cotton enters the boll opening period, it still has to continue to do the pruning work, including playing the old leaves, going to the empty branches, and playing the heart. In particular, cotton fields with excessive growth and gluttony and late maturity should be carefully and comprehensively pruned to improve the ventilation and light transmission conditions of the cotton fields, and to promote the organic nutrients to supply the knotted cotton peaches, so that they can mature early and reduce the rotten bells.
Second, remove the night bell
Practice has proved that the removal of the night bell can reduce the rotten bell and frost, especially in the late cotton field, the effect of removing the night bell is more obvious, because the late bell is mostly late autumn peach, mostly ineffective peach. The removal of the evening bell is conducive to the concentration of the cotton plant nutrients to supply the development of Futao and early autumn peaches, increase the boll weight and increase the flowering rate before frost. Chemical control technology can also be used. Generally, 3-4 grams of shrinkage is applied to the mu, and the growth of the cotton field can be increased to more than 5 grams. The chemical control technology can not only improve the canopy structure and ventilation conditions of the cotton field. It can also promote cotton early maturity.
Third, push the plant in parallel
The cotton fields with strong growth, glutinous and late maturity, and heavy planting between the plants should be pushed in parallel. The method is to push the adjacent two rows of cotton plants into a figure-eight shape when the soil is wet, after 5-7 days, the same The method separates the original two lines and merges them with the adjacent ones, so that the two rows of cotton on both sides and the floor between the rows can be fully illuminated by the sunlight, and the ventilation and light transmission are increased. The effect of warming and dampening, thereby reducing rotten bells and promoting maturity.
Fourth, cultivating loose soil
After the cotton enters the boll opening period, the soil is easy to be knotted, which will affect the absorption of roots and the absorption of nutrients. The soil should be ploughed to achieve the purpose of premature aging prevention. The cultivating should not be too deep, so as to avoid root injury, 3-5 cm is appropriate.
Five, root dressing
In the late growth stage of cotton, the root absorption capacity is weakened. In order to make up for the lack of nutrients in the root system, root dressing can be taken. Generally, the use of 2%-3% urea water 50 kg, spray once every 5 days, even spray 3-4 times. Due to the large amount of rain in the early stage of this year, potassium deficiency is likely to occur in the later stage. Therefore, potassium should be added in time. Spray 2% potassium sulfate solution, spray once every 7-10 days, and spray 2-3 times. For boron-deficient cotton fields, a 0.2% borax solution can be sprayed. Foliar spray fertilizer should be carried out after 4 pm on a sunny day. It can be carried out all day on a cloudy day. The water is evaporated too quickly, and the fertilizer burns the leaves to cause fat damage.
Sixth, pest control
Cotton enters the boll opening stage with many insect pests. There are four generations of cotton bollworm, bridge-building insects and beet armyworm. The hazard period is from late August to September. Field monitoring should be done well to seize the hatching period for prevention and control. Before the third instar, the control agent can be selected from 25% dibutyl ether urea emulsifiable concentrate 1000 times solution, or 35% endosulfan emulsifiable concentrate 1000-1500 times solution, or 20% methomyl emulsifiable concentrate 1500 times solution, or 2.5% fenvalerate emulsifiable concentrate 1500. Double spray. In addition, there are pests such as whitefly, red spider, hummer, and autumn scorpion, which can be evenly sprayed with 70% mancozeb wettable powder 800 times. The main diseases are red leaf stem blight, blight and blight disease. For red leaf stem blight, it should be combined with cotton to prevent premature aging, sprayed with potassium dihydrogen phosphate solution to prevent; control of blight and cotton bell disease, 30% evil The compound solution of the 1000 times solution of the mildew or the 1000 times solution of the 80% allicin aqueous solution and the 1000 times solution of the 70% methyl thiophanate WP 1000 times or the 70% chlorothalonil WP 800 times is uniformly sprayed.
Seven, grab the bad bell
When the age of cotton peach reaches 40 days, if there is even rainy weather, it is prone to rotten bells. The bells can be turned over for more than 40 days, the bell shells have turned yellow, and the black-spotted bolls have begun to be picked up. The underlying cotton peach is dipped in a 1% ethephon solution and then air-dried to obtain a cotton with better bolls.
The utility model discloses a Kitchen Shower head that is convenient to switch the water outlet mode, has a compact structure, and is easy to use, and a kitchen faucet using the kitchen shower head. , The shower head is provided with a water separator, and the water separator is provided with an annular flow channel and an inner flow channel respectively connected to the spray water outlet body and the V-shaped water outlet body, and the lower end of the outer wall of the water separator is upwardly circular A plurality of water inlet holes connected to the annular flow channel are provided, and a first sealing ring is provided on the lower side of the water inlet hole; the water outlet end of the shower body is connected with a converter, and the converter is provided with a communicating In the water diversion cavity at the water outlet end of the shower body, the lower end of the water diversion device is installed in the water diversion cavity and can move up and down, and the upper end of the inner wall of the water diversion cavity is provided with a convex ring matching the first sealing ring, so The bottom surface of the water diversion cavity is provided with a sealing gasket that can seal the inner flow channel.
Waterfall Shower Head,Overhead Shower Head,Push Button Hand Shower,Brushed Nickel Sink Faucet
Yuyao Zelin Sanitary Ware Co., Ltd , https://www.zlsanitaryware.com