Research of an Appropriate Sowing Quantity of Double-cropping Machine-transplanted Rice in Low and Medium Yielding District of Southern Jiangxi Province  

赣南中低产田区双季稻机插适宜播种量研究(英文)

作　　者：钟珺[1] 胡启锋[2] 李云[1] 黎为兵[1] 连垚 张朝阳[3] 虞新华 

机构地区：[1]赣州市农业科学研究所,江西赣州341000 [2]江西省农业科学院,江西南昌330200 [3]兴国县农业技术推广中心,江西兴国342400

出　　处：《Agricultural Science & Technology》2016年第3期526-529,543,共5页农业科学与技术（英文版）

基　　金：National Key Technology R&D Program of the Ministry of Science and Technology(2011BAD16B04,(2012BAD04B11)~~

摘　　要：[Objective] The aim was to research the appropriate seeding quantities of double-season machine-transplanted rice in middle and low-yielding district of southern Jiangxi Province. [Method] The research set five different seeding quantities treatments, and compared with conventional seedling treatment, and the appropriate seeding quantities of double season machine-transplanted rice in middle and lowyielding district of southern Jiangxi Province was discussed. [Result] The yields were highest when the seeding quantity was 70 g per tray of early rice by mechanical transplanting and 60 g per tray of late rice. The yield of early rice by mechanical transplanting showed significantly positive correlation with the number of productive ear and the number of seed per ear, and late rice yield showed significant correlation with the number of productive ear by mechanical transplanting. It is key for improving high yields by guaranteeing the number of productive ear. [Conclusion] The issue of proper sowing quantity should be taken into consideration for double-cropping rice in the region, which is crucial for high yields.[目的]研究赣南中低产田区双季稻机插适宜播种量。[方法]早晚稻各设置5个不同播种量处理,并以常规抛秧处理为对照,探讨赣南中低产区双季稻机插的适宜播种量。[结果]该区机插早稻播种量70g/盘(360盘/hm^2)、晚稻播种量60 g/盘(360盘/hm^2)时产量最高。机插早稻产量与有效穗数、每穗粒数显著正相关,机插晚稻与有效穗数显著正相关,保证足够的有效穗数是提高该区机插稻产量的重要措施。[结论]该区双季稻机插存在适宜播种量,且产量较高。

关 键 词：Sowing quantity Double-cropping rice Machine-transplanted Rice Low and medium yielding farmlands 

分 类 号：S233.71[农业科学—农业机械化工程]