岑溪市晚稻大面积发生稻穗包颈的原因及预防措施

Cause and countermeasures of incomplete panicle exertion occurred over large area in late rice cropping in Cenxi city

2004年岑溪市晚稻大面积稻发生穗包颈主要原因是由于播种偏迟,幼穗分化期遇高温干旱,抽穗时又持续3d的低温伤害。预防措施是:必须搞好水利设施,提高抗旱能力;选用中熟偏迟抗性强品种,适当提早播期,节水灌溉,配方施肥,加强病虫害防治,为水稻晚造高产稳产栽培提供技术经验。

The incomplete panicle exertion occurred voer large area in late cropping rice in Cenxi city was caused due to later sowing time, emergency of high temperature in young panicle differentiation stage and three days low temperature during heading stage. The preventive measures are： raising the capacity of irrigation system; choosing middle or a little later maturing varieties with strong pests resistance, sowing perfectly earlier than usual, and strengthening control of diseases and insect pests.