Comparison On Yield,Quality And Resource Use Efficiency Of New Rice Varieties

Based on the rice cultivation and management model of Changchun Agricultural Garden,22 new rice varieties in Jilin Province were selected as test materials.Through comparative analysis of yield and yield components,dry matter accumulation,quality and resource utilization efficiency,the potential of yield and resource utilization efficiency of new rice varieties in Jilin Province was explored,and new rice varieties with high yield,high quality and high resource utilization efficiency were screened.The results show that:(1)The rice varieties with the highest yield were Nongjing 303,Jinongda 168,Jinongda 158,Tonghe 66 and Tongke 18.The yields were 11.92 t/hm~2,11.65 t/hm~2,11.44 t/hm~2,11.05 t/hm~2 and 11.05 t/hm~2.The dry matter weight of Jinong University168,Tianyuan 617 and Tongshi 66 is higher.The panicles of Nongjing 303,Jinongda168 and Tongke 18 rice varieties were higher than those of Hakka Japonica 1,Tongke19 and Tongyu 257.The panicles and grains of Nongjing 303,Changjing 616 and Jinnongda 853 were the highest;Tongyu 225,Tonghe 66 and Jinnongda 738 had higher seed setting rate;Tonghe 66,Jike 518,Tongke 19 and Tongyu 257 thousand grain weight were larger.(2)Tonghe 66,Tonghe 886 and Tianyuan 617 had higher processing quality;Tonghe 886,Tianyuan 617 and Tongke 19 had the best appearance quality in chalkiness,chalkiness and chalkiness;the rice varieties with the highest protein content were Jinongda 738,Jinongda 853 and Tonghe 66,whose values were 6.84%,6.09%and 6.09%,respectively;the varieties with the highest amylose content were Mudanjiang 31 and Tongke 19.He66,Ha-Japonica 1;Ha-Japonica 1 was the most tasty rice variety,70.71;Tongke 18 was the lowest rice variety,with a value of 54.45.(3)The rice varieties with the highest heat use efficiency were Nongjing 303,reaching 8.97 kg/D hm~2.The lowest rice varieties were Jinongda 735,with a value of 6.24 kg/D hm~2.The top five rice varieties with the highest heat use efficiency were Nongjing 303,Jinongda 168,Jinongda 158 and Tonghe 66.The rice varieties with the highest temperature production efficiency were Jinongda 168(14.83kg/?·d·hm~2),while the rice varieties with the lowest temperature production efficiency were Ha-Japonica 1(10.93 kg/?·d·hm~2),and the top five rice varieties with the highest temperature production efficiency were Jinongda 168,Tianyuan 617,Tonghe 66,Nongjing 303 and Jinongda 158.The rice varieties with the highest water use efficiency were Nongjing 303(11.07 kg/mm),the lowest was Jinongda 735(7.70kg/mm),and the top five rice varieties with the highest water use efficiency were Nongjing 303,Jinongda 168,Jinongda 158,Tonghe 66 and Tongke 18.The rice varieties with the highest radiation use efficiency were Nongjing 303,reaching 5.68kg MJ/m2×d.The rice varieties with the lowest radiation use efficiency were Jinongda 735,with a value of 3.95 kg MJ/m~2×d.The highest partial productivity of nitrogen fertilizer was Nongjing 303,which reached 69.70 kg/kg,and the lowest was Jinongda 735,with a value of 48.45 kg/kg.The top five rice varieties with the highest partial productivity of nitrogen fertilizer were Nongjing 303,Jinongda 168,Jinongda158,Tonghe 66 and Tongke 18.