摘要
水稻直播条件下覆土深度及水层深度对水稻出苗及苗期生长均有一定影响。本试验在不同的覆土厚度、水层深度条件下对水稻苗期各项生理指标进行测定。通过研究得出:不覆土条件下应保持浅水层,利于水稻的出苗及苗期生长;水层过深不利于水稻出苗,同时影响水稻苗期生长,最终影响水稻产量。覆土条件下应尽量浅覆土,覆土过深导致水稻不出苗,同时覆土条件下不应保持水层,必须落干,促使种子吸收水分后有足够的氧气保证种子发芽生根出苗。
Soil cover depth and water layer depth have certain effects on rice emergence and seedling growth under the condition of direct seeding.In this experiment,the physiological indexes of rice seedling were measured under different soil thickness and water depth.The results show that the shallow water layer should be maintained under the condition of no soil covering,which is conducive to the emergence and seedling growth of rice.Too deep water layer is not conducive to the emergence of rice,but also affects the growth of rice seedling stage,and ultimately affects the yield of rice.Under soil cover conditions,soil cover should be shallow as far as possible.If the soil cover is too deep,the rice will not emerge.At the same time,the water layer should not be maintained under soil cover conditions.
作者
陈先东
吴向东
杨万新
CHEN Xian-dong;WU Xiang-dong;YANG Wan-xin(Institute of Agricultural Science,the First Division of Xinjiang Production and Construction Corps,Alar Xinjiang 843300,China)
出处
《北方水稻》
CAS
2022年第6期11-15,共5页
North Rice
基金
兵团第一师科研计划:水稻新品种选育及优质高产示范推广(2020NY05),优质丰产中熟粳型香稻新品种选育(2021NY08)。
关键词
水稻
覆土厚度
水层
出苗
Rice
Soil thickness
Water layer
Seedling emergence
