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Position: Home > Articles > THE HARDNESS OF PADDY SOIL DURING RICE GROWTH AND ITS INFLUENCE EFFECTS Acta Pedologica Sinica 1979,16 (1) 70-74

水稻土的软硬状况及其影响因素

作  者:
程云生;林长英;杨苑璋;徐梦熊
单  位:
中国科学院南京土壤研究所
摘  要:
过去的工作(陈家坊等,1961;程云生,1962)指出,高产水稻在其生长前期需要一个较烂、较软的土壤条件,而中期以后则需要土壤由烂软变为板硬。试验证明,土壤烂软时养分矿化速度快,有利于水稻分蘖期的生长;土壤板硬时则相反(程云生,1965)。土壤软
译  名:
THE HARDNESS OF PADDY SOIL DURING RICE GROWTH AND ITS INFLUENCE EFFECTS
作  者:
Cheng Yun-sheng, Lin Chang-ying, Yang Yuan-zhang and Xu Meng-xiong (Nanjing Institute of Soil Science, Academia Sinica)
摘  要:
A puddling and soft cultivated layer of soil is always the favorable soil physical condition for the high yield rice in early growing stage, and after the middle stage of rice growth a more compact and hard soil condition is required for its better growth. The field study showed that the soil physical condition—puddling, softness, compact and hardness required by rice in different growing periods had its own characteristics. The hardness of paddy soil in relation to different soil texture, organic matter and rice roots was also studied. Results obtained denoted that the effect of soil texture on the soil hardness was more important than that of soil organic matter. A simulation test showed that when flooding after plough and harrow, the dynamic change of the soil hardness appeared firstly a high level, then decreased with the duration of submergence, and at last tended to a stable level.

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