论文部分内容阅读
防止棉花芮铃脱落是我国棉花获得高额丰产的重要关键问题。1958年全国棉花虽然获得了史无前例的大丰收,但是芮铃脱落仍旧普遍而严重,一般大田棉花芮铃脱落率在65％左右,仅比过去稍有降低;个别丰产地由于水肥施用不当,或棉花株行距配置不合理,棉株生长过旺,棉田郁闭严重,形成中下部棉铃大量脱落,严重的脱落率达80%以上。影响棉花芮铃脱落,虽是水、肥、光、温等综合因素,但是水肥施用不当,棉田郁闭,透光通风条件恶化为其主因。因此在今年棉田已基本水利化和充足备肥的情况下,在适时适量施肥供水的基础上,
To prevent cotton from falling off is the key issue of obtaining high yield of cotton in our country. In 1958, although the national cotton gained an unprecedented bumper harvest, the rumbling of Ruiling continued to be widespread and serious. Generally, the cotton boll fallout rate in cotton fields was about 65%, only slightly lower than in the past. In some high yielding areas, due to improper application of water and fertilizer or cotton Plant line spacing configuration is unreasonable, cotton plants over-growth, cotton canopy closed serious, the formation of a large number of cotton bolls off, the serious off rate of 80% or more. Affect Cotton Ruiling off, although it is a combination of water, fertilizer, light, temperature and other factors, but improper use of water and fertilizer, cotton canopy, deterioration of light and ventilation as its main cause. Therefore, cotton fields this year have been basically water conservancy and adequate preparation of fertilizer in the circumstances, based on the appropriate amount of fertilizer and water supply,