Effects of combined application of lime and straw on rice yield and soil properties in cold waterlogged paddy field
The effects of combined application of lime and straw on rice yield and soil properties in the typical cold waterlogged paddy field in Hubei Province were studied to provide reference for decreasing the reducing substances in cold waterlogged paddy field.The results showed that compared with the no lime and straw treatment (L0 +S0),combined application of lime and straw significantly increased the yield,grain number of per spike,seed setting rate and 1 000-grain weight,with the increase rates of 46.6％,9.4％,6.7％ and 2.6％.The increase rates of the absorption of N,P2O5 and K2O were 47.9 ％,50.3 ％,and 48.2 ％.Combined application of lime and straw decreased the amount of soil active reducing substances and ferrous ion content,with the decreased rate of 48.3％ and 38.1％.The soil Eh was increased by 48.7％.Combined application of lime and straw had a good effect on decreasing the reducing substances and improving cold waterlogged paddy field.The combined application of lime 1 500-2 250 kg/hm2 and straw 4 500 kg/hm2 was ideal.
NETL
NSTL
万方数据
维普
