| 不同种植密度对宁化河龙贡米水稻品种农艺性状和产量的影响 |
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| 引用本文： | 曾仁杰,王火珠.不同种植密度对宁化河龙贡米水稻品种农艺性状和产量的影响[J].中国农学通报,2018,34(36):1-6. |
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| 作者姓名： | 曾仁杰 王火珠 |
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| 作者单位： | 福建省宁化县河龙乡农业技术推广站 |
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| 基金项目： | 福建省农业厅科技项目“福建省优质稻产业发展关键技术研究与应用”（2015-04）；福建省重大专项“水稻种质资源创新利用及新品种选 育”(2013NZ0002-2)。 |
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| 摘 要： | 为了探究不同种植密度对水稻农艺性状和产量的影响，以宁化河龙贡米水稻新品种‘玉针香’、‘农香32’和‘宜优673’为试验材料，进行3种不同密度种植，设置15万丛/ hm2、18.75万丛/ hm2及22.5万丛/ hm23个处理的小区试验，研究不同种植密度对水稻生育期、抗病性、植物学性状和产量的影响。结果表明：种植密度高低对水稻生育期和稻瘟病发病率影响不大，高密度种植时水稻纹枯病发病率和有效穗数增加，分蘖数和穗总粒减少；‘玉针香’和‘农香32’在种植密度18.75万丛/ hm2时产量最高，‘宜优673’种植密度22.5万丛/ hm2时产量最高；3个品种在3种密度组合种植中，以‘宜优673(A3) ’×密度B3（丛距20.2 cm）组合产量11.04 kg最高，较其他2个品种相比增产幅度在6%以上，因此‘宜优673’可做为河龙贡米首选优良水稻品种，种植密度22.5万丛/ hm2为宜。
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| 关 键 词： | 花生 花生 新品种 筛选 |
| 收稿时间： | 2018/4/9 0:00:00 |
| 修稿时间： | 2018/7/11 0:00:00 |
Planting Densities of Helong Rice: Effect on Agronomic Traits and Yield |
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| Abstract: | The paper aims to explore the effect of different planting densities on agronomic traits and yield of rice. The author took new Helong rice varieties ‘ ( uzhenxiang’, ‘Nongxiang32’ and ‘Yiyou673’) as materials, and set 3 different planting densities: 15×104 bunches/hm2, 18.75×104 bunches/hm2 and 22.5×104 bunches/hm2 to study their effects on growth stage, disease resistance, botanical characters and yield of rice. The results showed that: the planting density had little effect on the growth stage and the incidence of rice blast; high planting density increased the incidence of rice sheath blight and effective panical numbers, decreased the tiller numbers and the total spike grain;‘Yuzhenxiang’and‘Nongxiang32’had the highest yield at a planting density of 18.75×104 bunches/hm2, and‘Yiyou673’had the highest yield at a planting
density of 22.5×104 bunches/hm2; among the 3 varieties planted at the 3 densities, the combined yield of ‘Yiyou673 (A3)’×density B3 (the bunch distance between was 20.2 cm) was the highest of 11.04 kg, and the yield increased by more than 6% compared with the other two varieties. Therefore,‘Yiyou673’ is recommended as the preferential variety in Helong rice production with the planting density of 22.5 × 104 bunches/hm2. |
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| Keywords: | rice planting density agronomic traits yield |
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