Management of wheat set cotton "three defenses, four grabs, five attention"

The general requirements for the field management of wheat intercropping are "early promotion of seedling stage, long-term stability in the medium term and late-maturing protection in the late stage". Specific management measures can be summarized as "three defenses," "four grabs," and "five attentions."

First, before the wheat harvest, "grasping three defenses" First, the lack of seedlings off ridge. After sowing cotton, timely check the emergence of seedlings, found lack of seedlings, timely fill in; timely watering before wheat harvest to prevent drought dead seedlings. The second is pest control. Before the harvest, the local tigers are vulnerable and timely control. The third is to prevent young seedlings. Combined with watering, timely application of appropriate amount of nitrogen fertilizer to promote early-onset seedlings.

Second, after the wheat harvest, "grab four robs" one is to snatch crickets. Immediately after the harvest, the stubble was removed to remove the compaction and promote the growth of cotton seedlings and root development. The second is to grab fertilizer. After the wheat harvest, it is early to catch fertilizer, and after the general elimination, the application of urea is 2.5-5 kg ​​per 667 square meters; the amount of fertilizer should not be too large to prevent the growth of cotton seedlings. The third is to grab the water. After fertilization, water was then poured to raise seedlings and shoot water to grow and absorb soil nutrients. The fourth is to catch pests. After the wheat harvest, corn stubble is often damaged by the transfer of drill rods from the wheat plant to the cotton. It is necessary to follow the harvest and not to leave the cut wheat in the field. When 1% of the cotton is drilled, it can be treated with pesticides and stems, or soil protection tape to prevent the transfer of corn stubble from the wheat to the cotton seedlings.

Third, "five attention" First, pay attention to reasonable fertilization. Wheat cotton to early application, re-application of flower bell fertilizer, generally in the early flowering period of 667 square meters of urea 10-15 kg; to prevent late maturing, wheat cotton should not be applied cover fertilizer. In phosphorus deficiency plots, potassium dihydrogen phosphate or diammonium phosphate 300-500 times solution can be used as extra-root fertilizer in August and sprayed once every 10-15 days for a total of 2-3 sprays per 667 square meters. Spray 50-75 kg. The second is to pay attention to reasonable control. When the growth of main stems in Shenglei and early flowering period exceeds 3 cm, timely control will be carried out. The third is to pay attention to timely top. The fourth is to pay attention to cultivating soil at the flowering stage in order to prevent flooding and lodging. Fifth, pay attention to pest control in a timely manner. The second and third generations of cotton bollworms and cotton grasshoppers are severely damaged by wheat, and when the 100 hatchlings have 5 newly hatched larvae, the bollworm is prevented and treated in time. When the leaf rolling rate reaches 5%, it can be prevented and treated in time.

The general requirements for the field management of wheat intercropping are "early promotion of seedling stage, long-term stability in the medium term and late-maturing protection in the late stage". Specific management measures can be summarized as "three defenses," "four grabs," and "five attentions."

First, before the wheat harvest, "grasping three defenses" First, the lack of seedlings off ridge. After sowing cotton, timely check the emergence of seedlings, found lack of seedlings, timely fill in; timely watering before wheat harvest to prevent drought dead seedlings. The second is pest control. Before the harvest, the local tigers are vulnerable and timely control. The third is to prevent young seedlings. Combined with watering, timely application of appropriate amount of nitrogen fertilizer to promote early-onset seedlings.

Second, after the wheat harvest, "grab four robs" one is to snatch crickets. Immediately after the harvest, the stubble was removed to remove the compaction and promote the growth of cotton seedlings and root development. The second is to grab fertilizer. After the wheat harvest, it is early to catch fertilizer, and after the general elimination, the application of urea is 2.5-5 kg ​​per 667 square meters; the amount of fertilizer should not be too large to prevent the growth of cotton seedlings. The third is to grab the water. After fertilization, water was then poured to raise seedlings and shoot water to grow and absorb soil nutrients. The fourth is to catch pests. After the wheat harvest, corn stubble is often damaged by the transfer of drill rods from the wheat plant to the cotton. It is necessary to follow the harvest and not to leave the cut wheat in the field. When 1% of the cotton is drilled, it can be treated with pesticides and stems, or soil protection tape to prevent the transfer of corn stubble from the wheat to the cotton seedlings.

Third, "five attention" First, pay attention to reasonable fertilization. Wheat cotton to early application, re-application of flower bell fertilizer, generally in the early flowering period of 667 square meters of urea 10-15 kg; to prevent late maturing, wheat cotton should not be applied cover fertilizer. In phosphorus deficiency plots, potassium dihydrogen phosphate or diammonium phosphate 300-500 times solution can be used as extra-root fertilizer in August and sprayed once every 10-15 days for a total of 2-3 sprays per 667 square meters. Spray 50-75 kg. The second is to pay attention to reasonable control. When the growth of main stems in Shenglei and early flowering period exceeds 3 cm, timely control will be carried out. The third is to pay attention to timely top. The fourth is to pay attention to cultivating soil at the flowering stage in order to prevent flooding and lodging. Fifth, pay attention to pest control in a timely manner. The second and third generations of cotton bollworms and cotton grasshoppers are severely damaged by wheat, and when the 100 hatchlings have 5 newly hatched larvae, the bollworm is prevented and treated in time. When the leaf rolling rate reaches 5%, it can be prevented and treated in time.


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