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以常规中籼稻黄华占为供试品种,分别在露天湿润育秧和大棚旱育秧条件下,研究了壮秧剂和育秧母剂对陕南稻麦油两熟区机插稻秧苗生长的影响,旨在探索陕南地区机插秧超秧龄的调控措施,为该地区培育适宜机插的秧苗提供理论依据。结果表明,露天湿润育秧方式下,秧苗适栽期为播种后33 d,大棚旱育秧条件下,秧苗适栽期为播种后26 d;不同床土处理相比,表现为普通床土处理出苗率较高,壮秧剂处理次之,而育秧母剂处理最低;秧苗综合素质表现为育秧母剂处理>壮秧剂处理>普通床土处理。两种育秧方式相比,大棚旱育秧出苗率较高且有利于地上部和地下部的平衡生长。在陕南稻麦油两熟区可选择温室大棚旱育秧,能适当延长秧龄增加秧苗弹性,其次,充分利用设施大棚增加育秧期间积温的优势,采取适当延后播种的措施实现缩短秧龄,解决限制该地区机插秧推广的长秧龄问题。
The effects of strong seedling-raising agent and seedling-raising seedling on the growth of machine-inserted rice seedlings in southern paddy-wheat double maturing region were studied under the condition of wet-growing seedlings and dry nursery seedlings in conventional mid-indica rice. To explore the control measures of transplanting seedling transplanting seedling age in southern area of Shaanxi Province to provide a theoretical basis for breeding suitable seedlings in this area. The results showed that the suitable planting period of seedlings was 33 days after sowing in the open-air wet seedling planting, and the suitable planting period of seedlings was 26 days after sowing in the condition of dry nursery seedlings. Compared with different bed-soil treatments, the seedling emergence rate Higher, strong seedling agent treatment followed by the lowest seedling agent treatment; seedlings overall performance of the performance of seedling mothering agent> seedling agent treatment> common bed soil treatment. Compared with the two methods of raising seedlings, the seedling emergence rate of greenhouse nursery seedlings is higher and is conducive to the balanced growth of shoots and underground parts. Second, make full use of facilities greenhouses to increase the advantages of accumulated temperature during seedling raising, take appropriate measures to delay the sowing to shorten the seedling age, to resolve the restrictions The area of planting seedlings to promote long-seedling issue.