论文部分内容阅读
不同类型的品种,其叶龄数也不同,例如穗重型的“农林百选”一生叶龄为16.5张,穗数型的“武复粳”一生叶龄为18张。因此,要根据不同类型品种的叶龄模式,采取相应的育秧措施,确保培育适龄壮秧。一、叶龄模式和秧龄适期为培育发根力强的适龄壮秧,应掌握好秧龄期。总叶片数少的品种,秧龄弹性小,应防止“超龄”,总叶片数多的品种,秧龄弹性较大,应防止“缺龄”,造成延迟抽穗、成熟,影响后茬。适宜的秧龄期以移栽后植株能长出二叶才开始幼穗分化为宜。例:“农林百
Different types of varieties, the leaf age is also different, such as heavy panicle “Agriculture and Forestry hundred selection” leaves a leaf age of 16.5, spike number “Wu Fujing” leaf age of 18. Therefore, according to different types of leaf age model, take appropriate measures to ensure that young seedlings. First, the leaf age model and seedling age suitable for cultivating strong hair root age strong seedlings, should grasp the good seedling age. Varieties with a small number of total leaves, seedling age flexibility is small, should prevent “over age”, the total number of leaves more varieties, seedling age greater flexibility, should prevent “lack of age”, resulting in delayed heading, maturity, affecting the stubble. Appropriate seedling age transplanted plants can grow two leaves before spike differentiation is appropriate. Example: "Agriculture and Forestry hundred