Abstract: Changes of some index about two different planting patterns (wide-narrow ridge and equal ridge) of paddy were studied, which include illumination intensity of different layers, temperature and humidity between rows，number of tassel per cave , number of seeds per tassel, index of boundary effect about the number of stems per cave in different period of tiller. The results showed that when planted in wide-narrow ridge，the illumination intensity and rate of pervious to light are remarkably increased，while temperature and humidity between rows decreased，and the condition of light and temperature in the colony are greatly improved. Some index are decreased such as the index of boundary effect about temperature and humidity of colony in row，the number of tassel per cave， the number of seeds per tassel　and the number of stems per cave in different period of tiller. which demonstrate that after planting in wide-narrow ridge，the difference of growth in the colony and boundary row is reduced，while the growth advantage of individual in the colony is developed，so it arrives at the purpose of taking advantage of boundary row to increase production.