Cotton is used at making the articles for daily use such as the dress, the dress with the high volume that contain cotton is used rise very comfortable, so, our country people likes the dress with simple cotton mostly, this also lets cotton have in our country very big grow an area.
But cotton can encounter a lot of diseases in growth process, these circumstances are met to pily yield cotton quantity causes very big effect. We should observe among them typical situation, ability is preventing and cure the respect of insect pest is more purposeful quality.
On pily plant most the insect that often grows is aphid and bell bug, these insect are met the tender leaf tender bine of bite off plant, still can restrain blossom, meet those who accelerate leaf fall off, let leaf coil, of quantity yield cotton more or less can be also affected, they let cotton cannot according to normal measure growth, the time that lengthen blossoms. When the pest appears, want to choose appropriate insecticide to undertake spraying.
Sometimes pily wither is not normal phenomenon, however a kind of disease, be called blight. Of this kind of ill main harm is pily seedling, when fall ill, pily seedling can appear become yellow, become violet to wait for a phenomenon, some returns the reseau grain of meeting occurrence clarity, final result often is leaf slowly wither, next plant dies.
This kind bacteria lives in earth, want to undertake alexipharmic to the seed so, soil also should break up, with sunshine or the bacterium inside liquid medicine take out.
Appear when plant this kind of disease when, should spray with special medicaments go up in plant, plant root ministry, because bacteria great majority also has presence in earth, fall ill so all round cotton also should notice to scatter a few medicaments. When the soil that should cultivate is disinfected carelessly, the bacteria can affect the cultivation that falls one round in the remain in soil.
Still a kind of disease calls cyanosis, when pily plant contracts this kind of disease, the water branch in blade decreases, the position that and can have comes on spreads to the other position of plant gradually, whole plant can reduce the content of water, because of water be short of break, leaf can fall off slowly, plant moves toward death.
When encountering this kind of situation, should spray in time medicaments, time spray. Best method is choice disease resistance is stronger when choosing a seed, after growing a certain number of second cotton, want to change another ground in time to plow.
