| 张巍巍,柴永山,孙玉友,魏才强,解 忠,李洪亮,刘 丹,刘春光.密度及插秧株数对水稻品种牡丹江32生长及产量的影响[J].干旱地区农业研究,2015,33(2):70~74 |
| 密度及插秧株数对水稻品种牡丹江32生长及产量的影响 |
| Effects of transplanting density and population on growth and yield of rice variety Mudanjiang 32 |
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| DOI：10.16302/j.cnki.1000-7601.2015.02.011 |
| 中文关键词: 水稻 密度 插秧株数 产量 茎蘖数 干物重 |
| 英文关键词:rice transplanting density transplanting plant yield stem tillers number dry matter weight |
| 基金项目:国家科技成果转化项目（2011GB2B200001） |
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| 中文摘要: |
| 以牡丹江32为试材，研究密度和插秧株数对水稻群体茎蘖数动态、最大叶面积指数、干物重积累及产量的影响，研究发现，为保证水稻较高群体茎蘖数需提高增加每穴插秧株数至4～6株，较小的每穴占地面积有利于群体茎蘖数的提高，最佳行距×株距为36 cm×12 cm，这与常规栽培方式一致。增加每穴插秧株数可显著增加最大叶面积指数，这种增加作用主要是通过增加每平方米茎蘖数实现的，而增加每穴占地面积对最大叶面积指数有降低作用。成熟期干物重与每穴插秧株数及每穴面积相关性不显著，通径分析表明，增加每穴插秧株数有增加干物重的趋势，而扩大每穴面积会减小干物重。每平方米茎蘖数、成熟期干物重、最大叶面积指数与产量呈显著或极显著正相关。对于牡丹江32水稻品种，插秧规格40 cm×10 cm或30 cm×12 cm，每穴插秧4～6株，产量可达到8 635.4、8 634.0 kg·hm-2，二者差异不大，显著或极显著大于其他处理。 |
| 英文摘要: |
| To investigate the effects of transplanting density and number of seedlings per hole on the yield traits such as dynamic changes of stem tiller, maximal leaf area index and dry matter accumulation, the rice variety Mudanjiang 32 was used in this study. The results showed that the highest dynamic changes of stem tiller number of rice population was detected when seedlings were planted 4～6 plants per hole, and the transplanting density model was 36 cm×12 cm, which was consistent with the conventional cultivation way. The maximal leaf area index could be significantly enhanced by increasing the number of seedlings per hold, which relied on the increase of stem tiller number per square meter, whereas increasing cover area per hole would lead to low leaf area index. The dry matter weight at maturation had no significant correlation with the number of transplanting plants and area of each hole. Path analysis showed that dry matter weight tended to increase with the addition of transplanting plants in each hole, while expansion in area of each hole showed an opposite effect. The stem tillers number, dry matter weight at maturation and maximal leaf area index every square meter were significantly or extremely significantly positively correlated with the yield. It was further concluded that the most suitable transplanting models for Mudanjiang 32 were to employ a planting population of 4～6 plants per hole, and a transplanting density of 40 cm×10 cm or 30 cm×12 cm, resulting in yields of 8 635.4 kg·hm-2 and 8 634.0 kg·hm-2, respectively. There was no difference between these two transplanting models, but they were significantly better than the other models. |
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