The Seven key points of planting Cotton

The first condition for high yield of cotton is to grasp the whole seedling, and the process of realizing the whole seedling is also a multi-link process, and a little carelessness in the measures to grasp each link may affect the whole seedling. In this regard, remind cotton farmers to pay attention to the following six key links:

Key one: leveling the land by using manpower and material resources to concentrate time on leveling the land, the leveled cotton field can not only evenly save water, but also improve the progress of soil moisture production, and the emergence of seedlings is consistent, so it is easy to cultivate strong seedlings and enhance the disease resistance of seedlings. At the same time, it also lays a good foundation for drought and waterlogging resistance in the future.

Key two: scientific production of soil moisture in cotton fields requires accurate time, reasonable water consumption and high soil moisture quality. The water consumption for soil moisture production in spring is generally 600 to 900 cubic meters per hectare; the best period for soil moisture production is: clay soil cotton fields without winter moisture production should be completed about 20 days from the sowing date; sandy soil cotton fields should complete soil moisture production about 15 days before sowing; saline-alkali plots are suitable for soil moisture production about half a month before sowing and appropriately increase water consumption by about 10%. If the amount of water used to make soil moisture is too large or close to the sowing date, it is easy to aggravate the seedling disease.

Key three: correct selection of herbicides chemical herbicides in cotton field can be divided into two types: pre-seedling soil treatment agent and post-seedling stem and leaf treatment agent. As far as soil treatment agents are concerned, there is also a difference in the length of residual period, and herbicides with long residual period should not be used year after year, otherwise it will aggravate the disease of cotton plants.

Key four: strictly control the purchase of seeds and achieve "five looks" when purchasing improved cotton varieties: first, the qualification and reputation of seed production enterprises; second, whether they are approved varieties; third, whether the seed channels are legal; fourth, whether the seed quality meets the requirements of the national standard; and fifth, whether there are bills for the purchase of seeds.

Key five: timely sowing: different sowing methods, the suitable sowing time is also different, the base uses nutrition bowl to raise seedlings, the sowing time is generally from the end of March to the beginning of April, 2-3 seeds per bowl, 1-2 seeds per bowl, covering soil 1-1.2 cm; the base is covered with plastic film, and the sowing time is generally around April 20; open-field direct seeding is generally appropriate around April 25.

Key six: plant sufficient reserve seedlings in cotton sowing at the same time to plant part of the preparation seedlings, so that the transfer of seedlings to fill the gap, there are seedlings can be moved, foolproof.

Key seven: management after emergence: no matter which sowing method is adopted, the sowing must be watered sufficiently, the temperature of the seedling bed before emergence should be maintained at 28 ℃-32 ℃ during the day and 15 ℃-18 ℃ at night, and the temperature should be ventilated in time after emergence, the vents should be from small to large, 25 ℃ during the day, low temperature training should be carried out a week before planting, and after emergence, Bordeaux solution or Miaote should be sprayed in time to prevent the occurrence of seedling disease.