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首页> 外文会议>Regional Wheat Workshop for Eastern, Central and Southern Africa >INFLUENCE OF SEEDING DATE ON THE GROWTH AND GRAIN YIELD OF WHEAT
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INFLUENCE OF SEEDING DATE ON THE GROWTH AND GRAIN YIELD OF WHEAT

机译：播种日期对小麦生长和籽粒产量的影响

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摘要

Research to establish suitable planting dates for rainfed wheat (Triticum aestivum L.) in Zambia started in 1978 season and has continued in response to the flow of new germplasm from the breeding program. Five sites have been used for the sowing evaluation trial. Cultivars respond differentially to planting dates and locations. Wheat planted in December usually develops an epidemic level of Helminthosporium sativum. Low subsoil pH levels prevent deep root penetration due to aluminum toxicity, particularly in northern Zambia. In consequence, when the rains finish early, the late planted crop suffers from drought stress. The cultivar Coucal, together with other lines under development, combine greater resistance to H. sativum and better aluminum tolerance, and can be sown successfully over a longer time period.
机译：1978年赛季开始为赞比亚建立合适的种植日期（Triticum Aestivum L.）的合适种植日期，并继续回应来自育种计划的新种质流动的响应。五个站点已被用于播种评估试验。品种对种植日期和地点进行差异。 12月的小麦通常会发展蠕虫孢子症的疫情。低底土pH水平防止由于铝毒性，特别是在赞比亚北部的深度渗透。结果，当下雨早期完成时，晚期种植的作物患有干旱胁迫。栽培品种与其他线条开发，结合​​了更大的抗血液和更好的铝耐受性，并且可以在较长时间内成功播种。

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