Premium
Field Technic for Determining Comparative Yields in Wheat under Different Environmental Conditions in China 1
Author(s) -
Shen T. H.
Publication year - 1930
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1930.00021962002200030001x
Subject(s) - china , citation , citation impact , field (mathematics) , library science , mathematics , operations research , computer science , agricultural science , political science , law , environmental science , pure mathematics
A number of experimenters have reported results of field technic in wheat investigations, but their conclusions do not agree in all cases. This seems to be due to the different materials and methods used and to different conditions of soil and weather. It would be of interest to make a field technic study with the same materials and methods under different environmental conditions. With this purpose in mind, the writer presents here the results of his study on competition, the number and field arrangement of replications, and the size of plat at Nanking for the years I925 to I928 and at Igaifeng for ~926 to ~928. Nanking is situated in the southeastern part of China, with a mean winter temperature of 4° C and a minimum temperature of --,o ° C. The soil is loamy. Kaifeng is located in. North China with a mean winter temperature of o° C and a minimum temperature of --~2° C. The soil is a loess with alkaline spots. The two places present a wide difference in mean precipitation, as shown by the following averages for the period of ~9o6-25: