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Early cultivator Zhongzao 1(indica)and late rice cultivar Xiushui 2(japonica)were used for field experiments.Seedlings were transplantedon May 13 and Jun 28 respectively in spaced at5 cm between row and 4 cm within row with 4plants per hill.Treatments were started at thetime when the young plants had 80~ available
Early cultivator Zhongzao 1 (indica) and late rice cultivar Xiushui 2 (japonica) were used for field experiments. Seedlings were transplantedon May 13 and Jun 28 respectively spaced at 5 cm between row and 4 cm within row with 4plants per hill. Things were started at thetime when the young plants had 80 ~ available