桂北山区再生稻品种筛选及栽培关键技术研究
Studies on the Selection of Ratooning Rice Varieties and Key Cultivation Techniques in Mountainous Area of Northern Guangxi

桂北山区三江侗族自治县农技部门于2011~2013年结合超级稻 + 再生稻示范推广项目实施，开展再生稻品种筛选和头季稻种植密度、收割成熟度及留桩高度等栽培关键技术研究。结果表明：超级稻品种中浙优10号、中浙2A12和深两优5814适宜蓄留再生稻，头季稻种植1.0~1.3万穴/667m²产量较高，头季稻及再生稻产量均以基肥：分蘖肥：穗肥为6:3:1 (N1)时最高，在头季稻85%~90%成熟时收割再生稻产量较高，头季稻收割留茬高度以10~45 cm为宜。
In conjunction with the implementation of the super rice + ratooning rice demonstration and extension project, the agricultural and technical departments of the northern mountainous Sanjiang of Guangxi have conducted studies on the selection of ratooning rice varieties and key cultivation techniques such as planting density, harvest maturity and height of remaining piles of first-crop rice. The results showed that the super rice varieties Zhongzheyou 10, Zhongzheyou 2A12 and Shenliangyou 5814 were suitable for ratooning. The first season rice planting of 1.0~13 thousand holes /667m² yield is high. The highest yield of ratooning rice was obtained when the ratio of basal fertilizer to tillering fertilizer and panicle fertilizer was 6:3:1 (N1), and the yield of ratooning rice was higher when the first season rice was 85%~90% mature, the optimum height of stubble is 10~45 cm.