棉花高产栽培技术_成教优质课（Cotton cultivation techniques of _ adult education quality class）.docVIP

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棉花高产栽培技术_成教优质课（Cotton cultivation techniques of _ adult education quality class）.doc

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棉花高产栽培技术_成教优质课（Cotton cultivation techniques of _ adult education quality class）

棉花高产栽培技术_成教优质课（Cotton cultivation techniques of _ adult education quality class） Cotton cultivation techniques of _ adult education quality class First, choose suitable Cotton Varieties 1. Liao cotton No. 10 The plant height of about 70 cm, deep green leaves hypertrophy. 8.43 bolls per plant, boll round, missing tip. The growth period of bare land was 146 days, covering 137 days. It was suitable for film mulching cultivation, and the rate of flower before frost was 83 - 90%. Strong growth potential, not easy to seedling, senescence, boll, boll size, open floc concentration. The average boll weight 4.67 grams, lint percentage 35.72%, fiber length of 29 mm or more. Strong resistance to disease, resistance to Fusarium wilt, Verticillium wilt, seedling diseases and boll rot. Loose cotton, strong growth potential, planting density is too large, the average per mu 6000 7000 lines, 12 branches per plant leave 10. 2. Jin Mian 3 Very early maturing varieties, compact plant type, oblique or cylindrical fruit, topping 65 centimeters high, stem purplish red, 5 - 6 cm spacing. The leaves are bigger, the leaves are not bad, and the live stems are flocculent. The bell is oval, the shell is thin, easy to crack, open and concentrated, and burst for 15-20 days. 7.35 bolls per plant, boll weight 5.89 grams. The whole growth period was 135-140 days, the rate of flower before frost was over 85%, and the resistance to Fusarium wilt, Verticillium wilt, seedling disease and Boll Rot was higher than that of Liao cotton No. 9. May be appropriate to stay close planting and fruit. A flat 7500 - Mu Baomiao 8000 strains, 8 branches - 10; 9000 - 10000 slope thin lines, 6 - 7 branch. Low temperature and rainy year less appropriate left branch. Suitable for the northern and Western Liaoning cotton. Two, bare cotton cultivation techniques 1. choose the land and make a ridge (1) land selection: cotton is a warm and happy crop. Liaoning belongs to the Early Maturing Cotton, cotton in the country is th