河北省小麦中后期异常现象及对策

Abnormal Phenomena and Countermeasures of Wheat in Middle and Late Stage in Hebei Province

小麦中后期出现的异常现象会对其产量造成严重影响。该文总结了河北省小麦中后期经常出现的一些异常现象,对其症状及形成原因进行了分析。结果显示,除草剂药害或使用不当是造成小麦苗黄的主要原因;旗叶干黄尖是强光照射、水分缺失或感染病害造成的,除草剂药害、晚霜冻害和土壤熟化程度低造成抽穗困难;死苗与病害、劣质肥害及盲目用药有关;栽培管理措施不当和病虫害易造成小穗败育;小麦白穗与病虫害及气候条件有关。针对小麦苗黄、旗叶干黄尖、抽穗困难、死苗、小穗败育、白穗等异常现象,提出了相应的对策措施,旨在为河北省小麦安全生产提供参考。

The abnormal phenomenon in the middle and late stage of wheat has a serious impact on its yield.The author summarized and sorted out some abnormal phenomena in the middle and late stage of wheat in Hebei Province,and analyzed their symptoms and causes:herbicide damage or improper use is the main cause of wheat seedling yellowing;the yellow tip of flag leaf stem is caused by strong light,water deficiency or disease infection;herbicide damage,late frost damage and low degree of soil ripening make heading difficult;the dead seedling is related to disease,poor quality fertilizer and blind use of medicine;improper varieties and cultivation management measures and diseases and insect pests are easy to cause spikelet abortion;the white spike of wheat is related to diseases and insect pests and climatic conditions.According to the abnormal phenomena of wheat seedling yellow,flag leaf yellow tip,poor heading,dead seedling,spikelet abortion,white spike and so on,the corresponding countermeasures were put forward,in order to provide guarantee for wheat safety production in Hebei Province.