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高粱“捂苞”,又称”灌苞”、“淹脖”,是高粱打苞、抽穗期遇连续阴雨天常见的现象。轻者出现秃尖、秃脖,重者造成严重减产。 造成高粱“捂苞”,除了与下雨阴天有直接关系外,还与品种和栽培管理有关,如穗柄短抽穗性不好的品种容易发生“捂苞”,特别是有些品种由于穗紧、脖短,“捂苞”现象发生较重:有的品种生长繁茂,种植密度过大,或氮肥施用过多,也是加重或导致“捂苞”的原因。 防止高梁“捂苞”可以采取以下措施。 1.捏:对于矮秆或中矮秆的品种,雨后用手捏高梁苞的下部,苞叶受压破裂,促使苞叶内积水顺裂口外流。
Sorghum “cover their bracts,” also known as “irrigation”, “flooded neck” sorghum budding, heading consecutive occasions encounter rainy days common phenomenon. Light appeared bald pointy, bald neck, severe cases caused serious cuts. In addition to the direct relationship with the rainy day, but also with sorghum “cover Bao”, but also with the variety and cultivation and management, such as tassel short heading is not easy to produce varieties of “cover the bud”, especially because of some varieties of ear tight , Short neck, “Cover Baogao” phenomenon occurred heavier: some varieties of lush growth, planting density is too large, or too much nitrogen fertilizer, but also aggravate or lead to “cover BaoBao” reason. To prevent sorghum “cover bracts” can take the following measures. 1. Pinch: For dwarf or medium-dwarf varieties, the lower part of the trabeculae is pinched by the hand after rain and the bract is compressed and ruptured, prompting the hydrocele inside the bract to flow out.