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南京市DB3201/T 1020—2020《水稻机插秧苗硬地育秧技术操作规程》解读

2023-04-17 11:37:32 来源:农机网整理发布 阅读量:39284 评论

导读:该标准规定了水稻机插秧苗硬地育秧的育秧场地、品种选择、育秧材料、播种、摆放秧盘、苗期管理、起秧移栽和起秧运输等内容。适用于南京地区机插水稻(粳稻)的露地育秧。

  【农机网 政策与标准】2020年8月21日,南京市市场监督管理局标准化管理处批准发布DB3201/T 1020—2020《水稻机插秧苗硬地育秧技术操作规程》,该地方标准自2020年8月25日实施。
 
  该标准由南京市农业农村局提出,南京市农业技术推广站起草。规定了水稻机插秧苗硬地育秧的育秧场地、品种选择、育秧材料、播种、摆放秧盘、苗期管理、起秧移栽和起秧运输等内容。适用于南京地区机插水稻(粳稻)的露地育秧。
 
  【播种】
 
  播种期:日均温稳定在 10℃以上,是粳稻田间育秧的早限播期,日均温稳定在 15℃以上时,是安全移栽期; 迟播界限期是要保证安全齐穗。在适期播种范围内,要力争早播,同时要考虑机插秧对秧龄的要求。
 
  种子准备:备足饱满、发芽率高的精选种子,播种前摊晒 2~3d,浸种按 DB32/T 3784-2020 进行,浸足 48~ 60 h 后即可捞出沥干播种。
 
  播种:采用机械流水线播种。调节秧盘底土(营养土或基质)装盘厚度,控制在 2.0~2.5 cm;调节洒水装置,浇足底水,以底土(营养土或基质)水分饱和有少量水溢出秧盘底孔为原则;调节播量控制开关, 使每张秧盘湿谷播量适宜,一般每张秧盘播湿谷 140~150g;调节盖籽土控制开关,用素土盖籽,厚度控制在 0.3~0.5cm,以盖籽均匀、不见种子为宜。
 
  暗化催芽:播种结束的秧盘放在室内或室外,每 30~40 张为一堆,并在最上层覆盖一张装土的硬盘遮光,所有秧盘堆放整齐完毕后,用黑塑料薄膜加以覆盖,保温、保湿,进行暗化催芽。暗化时间一般为 2d, 当芽鞘出土 0.5 cm 左右时即可摆放至硬质场地上。
 
  摆放秧盘:平整并清扫选定的水泥场或硬质场地,晴天选择上午 10 点之前或下午 4 点以后(阴天全天都可以) 开始摆秧,整齐横放两排暗化好的硬盘,形成秧畦,畦间留宽 40 cm 左右的行走道。秧畦覆盖无纺布, 边缘多余的部分压在硬盘下进行固定。沿行走道铺设微喷设备,保证微喷的喷射范围能覆盖所有秧床。
 
  【苗期管理】
 
  水肥管理:每天上午、下午各喷一次水(基质育秧中午也需喷一次水),喷淋水量以保持秧盘营养土湿润为宜; 阴雨天减少喷水次数,起秧的前一天控水。营养土或基质育秧,一般不需追施肥料,2 叶期后如发现秧苗有缺肥现象,可用 1% 浓度的尿素溶液叶面喷淋。
 
  病虫防治:移栽前 3~5d,用相关药剂防治稻瘟病、灰飞虱和稻蓟马等,做到带药移栽。
 
  揭布炼苗:当秧苗长至 1 叶 1 心至 2 叶期时,揭去无纺布。晴天宜傍晚揭, 阴天可任意时间揭。如果遭遇低温, 可推迟揭, 或者白天揭开晚上覆盖。当气温超过 35℃时,应及时揭布并喷水,防止烧苗。
 
  起秧移栽:当秧苗达到适龄秧龄(一般秧龄在18-20d,叶龄在3.5-3.8叶,苗高13-17cm)时,及时起秧机插。
 
  起秧运输:可使用运秧架运输,避免运输过程中伤害秧苗。
 
  注:本文由农机网(www.nongjx.com)整理发布,资料来源:地方标准信息公共服务平台。
 
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