在第二报中已经表明,寒冷稻作区水稻品种本田生育前期生长量与产量有密切关系。为了进一步探讨在低温条件下,水稻不同生态类型品种本田生育前期生长量的增加与新根发育的关系,1981年选择16个不同生态类型的品种,1982年选择28个不同生态类型品种,对各类品种的低温发根力与生长量进行了测定,得出了结果,现报告如下。 In the second paper, it has been shown that there is a close relationship between the amount of early growth and the yield of Honda rice cultivated in cold paddy region. In order to further explore the relationship between the growth of Homo erectus and the growth of new roots in different ecological types of rice at low temperature, 16 different ecological types were selected in 1981 and 28 different ecological types in 1982, Cold-type hair root hair growth and amount of varieties were measured, the results are as follows, are as follows.