Appropriate watering Due to the low rainfall and hot weather in the northern part of China in the middle and late June, water should be properly watered, but do not water it too much, so as to avoid prolonged growth of the cotton buds. After cultivating water or heavy rain, the cultivator should be cultivated in time to promote the roots of the plants to squat down.
Fertilizers promote weak general 667 tons of topdressing urea 5 ~ 6 kg, potassium chloride 15 ~ 20 kg, 1 kg of zinc sulfate, 1 kg of borax, in order to promote the plant to take advantage of high yield shelf. When fertilizing, the fertilizer should be applied at a depth of 15 cm from the plant. During the bud period, topdressing should take care of weak cotton seedlings to promote the upgrade of weak seedlings.
Scientific pruning pruning method should be taken to retain the leaves, until the leaves grow 2 to 3 fruit branches, the time to hit the top of the leaves to promote its bud, flowering, ringing. Generally, it is carried out before and after June 20th to remove 4 to 8 early seedlings on the fruit branches of the lower part of the cotton plants, or to remove 2 to 3 fruiting techniques on the lower part of the cotton plants. Adjust the flowering period to July 10 before and after the peach. The peak period of cotton tying and the high light efficiency period of cotton leaves are synchronized with the local high temperature, rich light, and high water period.
The cultivating soil appears compacted or watered, rains, and cultivating in time after snow. During the bud period, the cultivator should be deep and the depth should be 8 to 10 cm. For cotton fields with an impractical trend, the cultivating depth can be increased to more than 10 cm to cut off part of the lateral roots, reduce the number of root groups and control the growth of stems and leaves.
Timely control and control should grasp the principle of “a small number of times, strong spraying, strong spraying, no sneeze spraying, no spraying of fertilizersâ€, so as to avoid phytotoxicity. In general, from the bud stage, it is commonly used to control 4 times with dildoamine, but the starting date and the amount of each drug are different. The main difference is based on the situation of each cotton field. The first time the dose is controlled from 0.1 to 667 square meters. 0.5 grams ranged from 3 to 6 times.
The main pests of cotton pests in the bud stage are the second generation of cotton bollworm, cotton aphid, red spider, and blind aphid. Future prevention and control work should be guarded against second-generation cotton bollworms. For the second generation of blind animals, we must also promptly discover timely medications. The adults who move into the cotton fields should be killed and the prevention and treatment work should be done in advance to avoid harm.
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