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龙葵是大豆田主要杂草之一。我们采集龙葵种子播种在试验田中,通过定点观察初步了解了龙葵发生规律。 1.温度对出苗的影响不同土层表现不一样。开始看到龙葵出苗的土层温度。0～5.0厘米土层为21℃,5.1～10.0厘米土层为14℃,10.1～15.0厘米土层为11℃。出苗高峰期的土层温度:0～5.0厘米土层为26℃,5.1～10.0厘米土层为19℃,10.1～15.0厘米土层为16℃。出
Solanum nigrum is one of the main weeds in the soybean field. We collected solanum seed sown in the experimental field, through the point of observation of the initial understanding of the occurrence of Solanum nigrum. 1. Temperature on the emergence of different soil layers of different performance. Began to see the emergence of solanum seedling soil temperature. The soil layer of 0-5.0 cm was 21 ° C., the soil layer of 5.1-10.0 cm was 14 ° C., and the soil layer of 10.1-15.0 cm was 11 ° C. Soil temperature at the peak of emergence: 0 ~ 5.0 cm soil layer is 26 ℃, 5.1 ~ 10.0 cm soil layer is 19 ℃, 10.1 ~ 15.0 cm soil layer is 16 ℃. Out