Why bad cotton bell
1. The excessive fertilization
Fertilizer caused by excessive growth of cotton leaves, shade, serious disease resistance drop caused by the rotten rotten peach bell.
2. Humidity
Rain and high humidity in the field for the growth of various bacteria and development have created favorable conditions.Rain in bell shell surface to form a layer of water film, bacteria through the water film, through the stomata intrusion bell shells, make the bell shell and internal fiber cell damage and formation fluid.Spore germs get appropriate moisture, germinate hyphae in the cotton boll, cause disease invades the bolls.Bell and bolls cracking degree has much to do.In the case of rain, just split the bolls than no crack or split has bad boll weight, so the rain is one of the important factors causing bad bell.
Pests and 3.
Cotton bollworm, corn borer decayed into the cotton boll, not only form a wormhole, and wormholes inner product has a large number of insect excrement, created conditions for bacteria infection, aggravating the bell.
4. Germs infect
Bad fluid is mainly caused by pathogen infection, harm the bolls of bacteria have a disease, red rot, black fruit, such as anthrax, harm serious is rot disease and red.
Cotton rotten bell
1. The reasonable fertilization
Increasing organic fertilizer application and under, right amount of nitrogen fertilizer, prevent cotton leaves long flourishing, lighten the cotton canopy closure, improve ventilation pervious to light.Timely drainage: for low-lying, poor drainage, water heavy cotton, drains shall be deepened, so as to speed up the drainage.Eliminate dark cotton Tian Ming waterlogging stains, improve cotton growth environment conditions, implementation of cotton multi-junction peach, not premature aging, reduce the fluid disease harm.In addition, to the problem of drainage and prevention of cotton cotton lodging before cotton flowering earth up is also a effective agronomic measures.
2. Appropriate control
And water conditions better cotton, cotton leaves easy prosperous long, should, prior to the cotton growth, in the middle of the reasonable spraying shrink festival amine, adjusting the cotton growth, moderate growth, prevent cotton leaves reduce fluid disease to harm.
3. Adjust the boll
DeMoMian peach too much before or early onset of cotton fell, by taking effective measures to adjust the cotton boll period and boll place, can reduce the bell.Early onset of cotton advocate remove the early buds from the lower 1 ~ 4 branch or get rid of the first and second branch as early as possible.
4. The reasonable training
For too narrow spacing, seal line cotton too early, to reduce the field too depressive, shadowing the lighting and ventilation, in the improved part should be hit as early as possible to the heart, which can reduce the cotton boll shedding and rotten bell.
5. Row scarification
Advocate row to hoe scarification, break the ground harden and reduce the cotton moisture, improve the cotton growth environment conditions, can reduce the cotton bell.
6. Pick sun disease bell
The fluid phase of more than 40 days, the bell shell faded yellow spot, and start the bolls, harvested before was not bad.Harvest the bolls of dip in with concentration of 1% ethephon solution leaching after drying, can get good cotton boll opening.
