论文部分内容阅读
出苗前畦面要经常保持湿润。有简单遮阴物的苗畦,因蒸发量较少,在浇透底水后一般不需再浇水。没有遮阴物的苗畦,因气温高、蒸发量大,要注意在早晨或傍晚经常浇小水。一般1~2天浇一次。早春或冬季育苗,一般不需浇水,以防降低地温。出苗后至第一片真叶展开必须经常浇水。保持畦面湿润,防止烈日晒伤幼苗。一般2~3天浇一小水。幼苗长至3~4片真叶时,根系开始扩大,吸水能力逐渐增强,浇水次数要逐渐减少。
Pre-emergence noodles to keep moist often. There is a simple shade of seedlings, due to less evaporation, after the end of the water is generally no need to watering. There is no shade of seedlings, due to high temperatures, evaporation, pay attention to the morning or evening often pouring small water. Generally 1 to 2 days pouring time. Seedlings in early spring or winter, generally do not need watering to prevent lower ground temperature. After the emergence of the first real leaves must be constantly watering. Keep noodles moist, to prevent sunburn seedlings. Generally 2 to 3 days pouring a small water. Seedlings grow to 3 to 4 true leaves, the roots began to expand, water absorption capacity gradually increased, the number of watering to be gradually reduced.