Effects of different control irrigation modes on the main agronomic characters and quality of rice
In order to study the water management mode of rice quality,with rice variety'Jinyuan 85'as the experimental material,four different control irrigation modes were arranged,namely 60%(W1),70%(W2),80%(W3)and 90%(W4)of soil saturation water content as the irrigation limit,and the effects of different control irrigation modes on the main agronomic traits and japonica rice quality of rice were analyzed with conventional irrigation(CK)as the control.The results showed that compared with the control,different control irrigation modes had inhibitory effects on rice plant height,stem and leaf dry weight,but could promote the increase of moisture content in rice ears.The quality of rice under different controlled irrigation modes was better than that of conventional irrigation.The amylose content W2 was the highest,which was 0.27%higher than that of CK.Different control irrigation modes reduced irrigation water consumption by 3 990-5 415 m³/hm² compared with conventional irrigation.Through the comprehensive evaluation of various rice quality indicators and the sum of irrigation and rainfall,it is found that controlling soil saturation moisture content of 90%as the limit of irrigation water is the best rice water management mode.
NETL
NSTL
万方数据
维普
