生育约束型直播水稻生育特征与稳产关键技术

张洪程,邢志鹏,翁文安,田晋钰,陶钰,程爽,胡群,胡雅杰,郭保卫,魏海燕

Growth Characteristics and Key Techniques for Stable Yield of Growth Constrained Direct Seeding Rice

ZHANG HongCheng,XING ZhiPeng,WENG WenAn,TIAN JinYu,TAO Yu,CHENG Shuang,HU Qun,HU YaJie,GUO BaoWei,WEI HaiYan

表7 基本苗密度对生育约束型直播水稻叶面积指数和粒叶比的影响

Table 7 Effects of basic seedling density on leaf area index and grain leaf ratio of growth constrained direct seeding rice

方式 Methods	基本苗 Basic seedling (×10⁴ hm^-2)	叶面积指数 Leaf area index			颖花数/叶面积 Spikelets/Leaf (cm^-2)	实粒数/叶面积 Grains/Leaf (cm^-2)	粒重/叶面积 Grain weight/Leaf (mg·cm^-2)
方式 Methods	基本苗 Basic seedling (×10⁴ hm^-2)	拔节期 Elongation stage	抽穗期 Heading stage	成熟期 Maturity	颖花数/叶面积 Spikelets/Leaf (cm^-2)	实粒数/叶面积 Grains/Leaf (cm^-2)	粒重/叶面积 Grain weight/Leaf (mg·cm^-2)
水直播 Water direct- seeding	120	3.76b	6.85b	3.89b	0.578b	0.531b	13.44ab
	240	4.05ab	7.36a	4.36a	0.601a	0.549a	13.92a
	360	4.49a	7.26a	4.13a	0.579b	0.522b	13.14b
旱直播 Dry direct- seeding	120	3.22b	6.65b	3.54b	0.535b	0.503b	13.04b
	240	3.56ab	7.24a	3.96a	0.557a	0.522a	13.44a
	360	3.86a	7.17a	3.74a	0.540b	0.506b	13.09b