小白菜与苋菜营养生长期的吸水量研究

Water Absorption of Chinese Cabbage and Amaranth in Vegetative Stage

为了给作物浇灌提供更精准的参考数据,利用专门研制的植物吸水数量简易测量仪,测量小白菜和苋菜营养生长期每天最大吸水量,以及全天不同时段的最大吸水量。结果表明:小白菜和苋菜的吸水量随着植株的生长而增大,小白菜和苋菜营养生长期的后半段的吸水量分别为前半段的5.93倍和2.74倍,在一天中,植物的吸水时间主要是7∶00～19∶00,高峰时间段为12∶00～16∶00。植物吸水量与气温在0.01水平(双侧)上显著相关。栽培小白菜和苋菜,每1 g鲜草产量消耗的水量分别为19.7 g和17.7 g。

In order to provide more accurate reference data to irrigate crops,by using plant water absorption simple measuring instrument developed specially,the biggest water absorption of Chinese cabbage and amaranth in the vegetative growth stage was surveyed in every day and different periods in a day.The results showed that the water absorption of above mentioned plant increased in plant growth,and the water absorption of china cabbage and amaranth in the second half stage of growth were 5.93 and 2.74 times of that in the first half stage,respectively.In one day,the main time for water absorbing plants was at 7∶00～19∶00,and peak period was at 12∶00～16∶00.In addition,crop water quantity and temperature in 0.01 level has significant correlation level（bilateral）.Cultivating cabbage and amaranth under the test conditions,the water consumption quantity per 1 g of grass yield were 19.7 and 17.7 g,respectively.