冷浸田水稻湿润栽培化学除草技术研究

 根据湿润栽培中水稻移栽至返青成活期间,田间须保持浅水层的技术要求,提出在冷浸田水稻移栽后4～6天,视杂草种类和群落组成,选择适宜的杂草芽期土壤处理除草剂,单用或混用,拌成毒土撒施,施药后保持4～6cm浅水层10天,10天后保持湿润状态的化学除草技术.经两年田间小区试验证明,可有效控制杂草危害,有明显增产效果.

Study of Chemical Weed Control Technic on Rice Moist Cultivation in Cold and Soaked Fields

According to the requirement of retaining shallow water condition in the period from the rice seedling transplantation to revival on rice moist cultivation in cold and soaked fields, a new kind of chemical weed control technic was used. After the rice seedling was transplanted four or six day, in accord with different kinds of weeds and community compsitions, choosed corresponding one or two soil applied herbicides, mixed them with soil, then scattered it into the rice field in period of weed seeds gemmation, keeping the shallow water within 4~ 6 cm for ten day, henceforth, remaining only moist condition. This way above was tested two years in the plots and confirmed that it can effectively control the weeds growth and increase rice yield obviously.