播种量与行距对水稻保墒旱直播产量的影响研究

Effect of Seeding Quantity and Row Spacing on Yield of Soil Moisture Preservation and Dry Direct Sowing Rice

对2个品种、3种播种量、3种行距处理的水稻保墒旱直播试验结果表明:不同行距处理的水稻产量间差异达极显著水平,分蘖力弱的品种行距15 cm、分蘖力强的品种行距20 cm时水稻产量最高;分蘖力弱的品种播种量以300 kg/hm2为宜,分蘖力强的品种播种量以225 kg/hm2为宜。

An experiment was made on the soil moisture preservation and dry direct sowing rice with the treatments of 2 varieties, 3 kinds of seeding quantity and 3 kinds of row spacing. The results show that the yield differences between different treatments of row spacing are extremely significant. The yields are highest when the row spacing is 15 cm for the variety with weak tilleringability, ＇20 cm for the variety with strong tillering ability. The seeding quantities should be 300 kg/hm2 for the variety with weak tillering ability and 225 kg/hm2 for the variety with strong tillering ability.