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一、灌水水稻在分蘖期以营养器官的生长为主,为使分蘖早生快发、植株健壮、根系发达,合理调节田间水分具有重要作用。生产实践证明:分蘖盛期前宜用浅水灌溉。适宜水深是3～5厘米,如超过5厘米,则对分蘖起抑制作用。有些地区在分蘖期采用湿润灌溉(在两次灌水时仅灌浅水,在两次灌水之间的短时期内,土壤保持高度湿润状态),对分蘖也是有利的。浅水灌溉及湿润灌溉之所以在分蘖期有利,
First, irrigation Paddy in the growth of vegetative organs mainly in order to make early tillering faster, robust plants, developed root system, a reasonable regulation of field moisture plays an important role. Production practice has proved: tillering period should be shallow water irrigation. Suitable depth is 3 to 5 cm, such as more than 5 cm, then the tillering inhibition. In some areas, wet irrigation at tillering stage (shallow irrigation with two irrigation and soil with highly moist soil in the short period between two irrigation) is also beneficial for tillering. The reason why shallow irrigation and wet irrigation are good at tillering stage,