关键词: 水稻, 水稻, 花培, 龙粳13号, 寒地

Abstract: Soil moisture is very important for maize growth. With plot and field trial, this paper studied soil temperature, air temperature & humidity and status of summer corn growth under 3 treatments: stubble removing, stubble remaining, and stubble burning, and analyzed the filed water effect under wheat stubble remaining. The results showed that, (1) stubble remaining reduced soil temperature obviously, the soil surface temperature was lowest through all day, and during 10 o’clock to 14 o’clock the temperature difference was bigger, and the average soil temperature of 5 to 25cm was lower by 1.45℃ and 2.3℃ compared with stubble removing and stubble burning, (2)The soil moisture of stubble remaining between 0 to 70cm was higher than the other two treatments from start to finish, (3)The effect of air humidity near the surface by stubble remaining was more obvious in evening, because the stubble could coagulate vapor, by day under the stubble remaining height the air temperature was lower and air humidity was higher, but over the stubble remaining height the result was reverse compared with stubble removing and stubble burning, (4)Stubble remaining affected the summer corn growth mainly at the middle and later period. When the trial was finished, the plan height and stem diameter all got bigger than stubble removing and stubble burning. The stubble remaining treatment could lower cultivation cost, save water and increase production, so it should popularize extensively in practice.