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2017年7月中下旬,安徽省部分地区的直播水稻出现早穗现象,以冬季空茬直播水稻更为严重。一般空茬直播生育进程为90d左右,麦茬直播生育进程只有60d不到,出现提前抽穗,营养生长期缩短,而且将会遭遇夏季极端高温天气,影响最终产量,造成一定的经济损失。通过实地调查了解,现将形成原因及应对策略分析陈述如下。1成因1.1直播常年直播,使土地得不到深耕松土,会造成土壤板结,土壤保肥保水能力变差直至丧失,留不住肥水造成
In late-July 2017, direct seeding rice in some areas of Anhui Province showed the phenomenon of early spike, and the direct seeding of winter rice with stubble was more serious. Generally, the duration of direct seeding of stubble was about 90 days, and the direct seeding of wheat stubble was only less than 60 days. Earlier heading occurred, and the vegetative growth period was shortened. In addition, it would encounter extremely hot summer weather and affect the final yield, resulting in some economic losses. Through field investigation and understanding, the reasons for the formation and coping strategy analysis are as follows. 1 causes 1.1 live broadcast of the year round, so that the land can not be plowed loose soil, will result in soil compaction, soil fertility and water retention capacity until the loss, unable to retain the result of fertilizer