High-yield and high-yielding cultivation techniques of cotton leaves

Technical points:
1, species selection. Choose middle-maturing, high-quality and high-yielding cotton varieties suitable for planting in our province.
2, sowing and transplanting. One ripening transplanting or two ripening planting cotton fields are sown at the end of March and the beginning of April; two ripening crops are transplanted and transplanted in the cotton field in mid-April to sow the seedlings for nutrition. Transplant from late April to mid-May. Conventional cotton boxes are 140-160 cm wide with an average spacing of 70-80 cm and a 35-45 cm spacing. Hybrid cotton and other rows are planted at a distance of 100 cm, and the width of the rows is not less than 80 cm. The average row spacing is between 85 and l00 cm, and the spacing between plants is 40-50 cm.
3, bud stage transformation using leaf branches. After budding, keep the dominant leaves of the cotton plant and remove all the rest. Note that the main stem leaves remain.
4, Ye Zhi topping control. When each of the shoots grew 7 to 8 secondary fruit branches, the top of all shoots was removed. After 4 branches of each fruit were grown and topping, each leaf was regulated. The principle of light weight and heavy weight was used. Diclocamine was sprayed twice, with 1 g per acre for the first time, and 1.5 g water for the second time. Spraying.
5, timely topping. When the 18th to 22th layer of the fruit tree is topping, the time is appropriate before and after the beginning of autumn. To achieve "the branch to the unequal time, when it is not to wait for the branch," advocated to play a small top, take off one leaf and one heart.
6, Hualing period of tone. When the main stem leaves 22 to 23 pieces or 15 to 16 fruit branches, with 1.5 ~ 2 g of dildoamine watered 30 to 40 kg of foliar and fruiting branch growth point spray; 7 days after the top, after the stamina of the cotton field, shrinking Day amine 2 to 3 grams of water 45 kg spray, inhibit the occurrence of axillary buds and null buds, control the top fruit branches stretch too long and cause the shade in the lower part.
7, against the shady fields. The poorly ventilated and light-transparent cotton fields promptly knocked out the lower old leaves and empty branches, touched the buds and sprouts, picked the side of the heart, increased the ventilation of the cotton fields, and reduced the rotten bell.
8, outside the top dressing. From mid-August to early September, use 1% urea plus 0.2% KH2PO4 or 1.4% Sodium nitrophenolate (802) 4000 times to spray 2 or 3 times, and add special fertilizer for cotton, etc. Strive for tenderness in August, Jianchang September, to achieve Zhuang Fu peach, fight the purpose of autumn peach.

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