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黑龙港地区的旱地棉田应分为两大类:一类是旱而不薄亦不碱的中产类型,其生育特点变化大,单株结铃率不稳定,产量结构以伏桃和早秋桃为主,但年际间变化大,因雨量分布而异;配套措施应是促控并重。另一类是早薄碱的低产类型,其生育特点变化小,单株结铃率较稳定,产量结构以伏桃为主,年际间变幅小;其栽培技术应一促到底。
The dryland cotton fields in Heilongjiang should be divided into two categories: one is middle and middle type which is dry, not thin and not alkali. The characteristics of its fertility vary greatly. The yield of bolls per plant is not stable. Lord, but large changes over the years, due to the distribution of rainfall varies; supporting measures should be to promote both control and. The other is the low-yielding type of early-thinning alkali. The change of its reproductive characteristics is small. The boll yield per plant is stable. The yield structure is dominated by Vase and its amplitude is small in the interannual period. Its cultivation technique should reach the end.