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黄淮海棉区,棉花多在6月上中旬现蕾,7月上中旬开花,大约经历25～30天。这个时期,标志着棉花进入了营养生长和生殖生长并进期,仍以营养生长为主。它不仅继续长茎、叶,而且开始增枝现蕾;既要搭丰产架子,又要为开花结铃积累养分,是一生中生育矛盾转化的关键时期。田间管理的主攻方向是:在壮苗早发的基础上,以调节好肥、水为中心,配台化控、中耕、整枝等措施,促使“两长”协调生长,实现壮棵稳长,多长叶,多现蕾。旺长敏感期不旺长,蕾多蕾大脱落少,壮棵节密形成丰产架子,为高产打好基础。肥水好的高产田,要以控为主,控中有促,天控人促。具体管理措施是:一、稳施肥,巧浇水。棉花蕾期要求棉株稳长,施
Huang-Huai sponge area, cotton and more in mid-June on the bud, flowering in mid-July, about 25 to 30 days. This period marked the beginning of vegetative and reproductive growth of cotton and the growth of vegetative growth. Not only does it continue to grow stems and leaves, but it also begins to grow branches and buds. It not only needs to take on high yield shelves but also accumulates nutrients for flowering bolls, which is a crucial period for the transformation of the birth and birth contradictions in a lifetime. Field management of the main direction is: on the basis of strong seedling early hair, to regulate the fat, water as the center, with Taiwan’s control, cultivation, pruning and other measures, prompting “two long ” coordinated growth and achieve strong strong Long, long leaves, more budding. Vanguard sensitive period is not prosperous long Lei Lei Lei big shed less strong Zhuang Kejie dense formation of shelves, lay a good foundation for high yield. Fertilizer and water good high-yield fields, to control the main control in the promotion, natural control urged. Specific management measures are: First, stabilize fertilizers, clever watering. Cotton buds require stable cotton plant, Shi