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6 基本苗密度对生育约束型直播水稻产量及其构成的影响

Table 6 Effects of basic seedling density on yield and its components of growth constrained direct seeding rice

方式 Methods	基本苗 Basic seedling (×10⁴ hm^-2)	穗数 Panicles (×10⁴ hm^-2)	每穗粒数 Spikelets per panicle	群体颖花量 Spikelets (×10⁴ hm^-2)	结实率 Ripened grains (%)	千粒重 1000-grain weight (g)	实产 Grain yield (t·hm^-2)
方式 Methods	基本苗 Basic seedling (×10⁴ hm^-2)	穗数 Panicles (×10⁴ hm^-2)	每穗粒数 Spikelets per panicle	群体颖花量 Spikelets (×10⁴ hm^-2)	结实率 Ripened grains (%)	千粒重 1000-grain weight (g)	2017	2018
水直播 Water direct- seeding	120	307.8c	128.8a	39638.0c	91.7a	26.59a	9.2b	9.5b
	240	368.3b	120.2b	44246.8a	91.3a	26.54a	10.2a	10.4a
	360	401.5a	104.8c	42079.4b	90.2a	26.46a	9.5b	9.7b
旱直播 Dry direct- seeding	120	297.4c	119.6a	35554.5c	94.0a	26.92a	8.7b	8.8c
	240	353.8b	114.0b	40321.6a	93.7a	26.86a	9.7a	9.9a
	360	382.2a	101.3c	38706.2b	93.7a	26.84a	9.4a	9.2b