Key Techniques of Large-scale Super-High-Yield of Rice in Light Soda Saline-Alkali Soil

LI Hong-yan1,SUN Guang-you2,3,4,ZHAO Li-yong5,WANG Wen-hui1,WAMG Guo-shi6,YAN Xiu-min2,LUO Yin-tao1,WANG Shi-kui1,YUE Fushun1(1.Rice Office of Daan Agricultural Bureau,Daan City 150000;2.Northeast Institute of Geography and Agricultural Ecology,CAS,Changchun 130021;3.College of Environmental and Resource Sciences,Jilin University,Changchun 130021;4.Harbin University,Harbin 150000;5.Northeastern Water Investigation Design and Research Co.,Ltd.Changchun 130012;6.Daan city committee of China Pepoe Politics Discurse Meeting Jilin Daan 131300,China)

Light soda saline-alkali soil;Super-high yield of rice;Songnen plain;Daan;Ten thousand mu experiment area in ancient river channel

A super high yield experiment of rice was carried out on saline-alkali land development experimental area of Daan ancient river channel using 'Jijin 88',a super rice variety of non-salinity.The results showed that the yield was 10768.2 kg/ha in 7.33 hectares,which was 7.5% higher than that of 'Jijing 503' and 30.5% higher than the average of rice production on the Songneng Plain,so it became a new record of rice unit yield in the plain.The key technique included: reducing the saline of soil to critical value of the non-saline soil used drip washing,transplanting rice proper earlier to extend the growth period and planting closely to get more ears,applying formula fertilizer and plus manure to supply enough nitrogen,irrigating by shallow-deep-shallow-wet mode.This experiment extended the cultural range of 'Jijin 88' and broke non-alkali limit.Different types of soda saline-alkali soil can be developed to grown rice,even super-high-yield can be achieved.This is of important economic and social significance to enhance the regional rice yield and construct food production base.