“双免密苗”技术对寒地水稻秧苗素质及酶活性的影响

张家智, 赵羽涵, 丁俊杰, 姚亮亮, 邱磊, 张茂明, 王自杰, 高雪冬, 黄成亮, 崔士泽, 杨晓贺

Effects of “Double-Exemption Dense Seedling” Technique on Seedling Quality and Enzyme Activity of Rice in Cold Region

Zhang Jiazhi, Zhao Yuhan, Ding Junjie, Yao Liangliang, Qiu Lei, Zhang Maoming, Wang Zijie, Gao Xuedong, Huang Chengliang, Cui Shize, Yang Xiaohe

表3 不同播种处理和播种量水稻秧苗素质的影响

Table 3 Effects of different seeding treatments and seeding rate on seedling quality of rice

年份 Year	处理 Treatment	株高 Plant height (cm)	叶龄 Leaf age	根数 Number of roots	根长 Root length (cm)	茎基宽 Stem base width (mm)	第一叶耳间距 First lug spacing (cm)	百株地上干重 Above-ground 100 plant dry weight (g)	百株地下干重 Underground 100 plant dry weight (g)
2021	G	15.34aA	1.94bB	6.62aA	5.57aA	1.42aA	0.35bB	1.73bB	1.58bB
	Y	14.21bA	2.16aA	7.22aA	5.93aA	1.38aA	1.75aA	2.66aA	1.80aA
	F_A	8.276^**	23.937^**	2.940	1.520	0.240	60.736^**	2028.255^**	84.021^**
	B₁	14.68aA	2.18aA	7.07aA	5.89aA	1.52aA	1.46aA	2.17bA	1.66bB
	B₂	15.10aA	1.98bB	6.80aA	5.79aA	1.40aA	0.89bA	2.18bA	1.50cC
	B₃	14.54aA	1.99bB	6.90aA	5.57aA	1.28aA	0.81bA	2.24aA	1.90aA
	F_B	0.740	8.636^**	0.200	0.420	2.160	5.161^*	4.745^*	97.522^**
	F_A×B	3.110	3.980	0.250	0.280	0.190	0.240	25.141^**	57.578^**
2022	G	11.53aA	2.04aA	7.17aA	8.46aA	0.71aA	0.54bB	1.36bB	1.39aA
	Y	10.06bB	2.02bB	6.89aA	8.06bA	0.54bB	0.71aA	1.39aA	1.38aA
	F_A	1.900	1.530	2.270	5.780^**	19.850^**	19.850^**	0.082	0.010
	B₁	10.34bB	2.02bB	9.70aA	7.07aA	1.62aA	0.57bB	1.57aA	1.48aA
	B₂	10.75bAB	2.04aA	8.15bB	7.14aA	1.53bA	0.74aA	1.22cC	1.39bB
	B₃	11.29aA	2.03aAB	6.92cC	6.88aA	1.38cB	0.56bB	1.34bB	1.28cC
	F_B	0.267	0.415	0.702	93.781^**	8.525^**	8.525^**	3.257	0.589
	F_A×B	36.153^**	10.382^**	10.304^**	4.460^**	4.797^**	4.797^**	163.057^**	79.436^**