The invention discloses a planting method for increasing the content of
anthocyanin in purple rice grains, which comprises the following specific steps:
sowing purple rice seeds from May 20th to May 30th every year, and setting the
nitrogen application amount to be 24kg N / mu and the planting density to be 1.58-2.22 million holes / mu at the same time. According to the method, the
sowing time, the
nitrogen application amount and the planting density are precisely and cooperatively regulated and controlled,
resource distribution in the key period of purple rice
anthocyanin synthesis is directionally optimized, the content of
paeoniflorin and
cyanidin in grains is remarkably increased, meanwhile, yield stability and efficient
resource utilization are both considered, and through cultivation technology innovation which is low in cost and easy to popularize, the yield of purple rice is increased. The multi-target of directional enhancement of functional components of purple rice, stable yield and high
resource efficiency is achieved, a technical normal form is provided for green transformation of functional
agriculture, remarkable economic, ecological and
social benefits are achieved, and the important requirement for green and high-efficiency development of functional
agriculture is met.