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1 选用适宜品种抗虫棉在豫北地区推广应用的品种分中熟和早熟两大类。中熟品种(系)主要有特优抗虫棉,高效抗虫棉 98-1、中29、中38、DP99B、20B、33B及抗虫棉原良种抗虫棉新品系99-3等,这些品种(系)适用于春播的春地,瓜棉套种、麦套春棉。早熟品种如中30等,主要适用于夏播。
1 Selection of the appropriate varieties of insect-resistant cotton in the promotion and application of varieties in northern Henan are divided into two categories cooked and precocious. Medium maturing varieties (lines) mainly include special high-resistant insect-resistant cotton, high-efficiency insect-resistant cotton 98-1, medium 29, medium 38, DP99B, 20B, 33B and new cotton insect- Varieties (lines) Suitable for spring sowing in spring, melon cotton intercropping, wheat spring cotton. Early varieties such as 30, mainly for summer sowing.