水稻早熟品种分蘖生产力的初步分析 第Ⅰ报 在普通栽培条件下各节位分蘖生产力

PRELIMINARY ANALYSIS ON PRODUCTIBILITY OF TILLERS IN PREMA TURE RICE CULTIVAR Ⅰ The Productibilty of Each Knot Tillers under the general condition

摘要:

在寒冷稻作区,种植早熟品种是防卸低温冷害的根本措施。为了充分利用早熟品种的分蘖生产力,争取高产之目的,则以矮秆多蘖型的“松前”品种,设置薄膜育大苗,盘育小苗,球肥深施,表层撒施4个处理区,调查各节位分蘖的发育规律及生产力。研究结果表明,在普通裁培条件下,早熟品种分蘖生产力最大的优势分蘖节位为大苗的第5,6,7节;小苗的第4, 5,6节的第一次分蘖。这些优势节位的分蘖产生于插秧后的10～15天,止于25～30天。

Abstract:

It is the basic measure to resist low temperature injury with premature cultivar of rice in cool region. In order to test the productibility of tillers in premature Cultivar for getting high yield, the drawf stalk and multitiller cultivar "MaZmae" was used as a exprimental material. Four treatments, the large seedling （cultured in film of plastics）, Small seedling （cultured on Plate）, deep placed （ball fertilizer） and broadcast application of fertilizer were adopted. The growth regulation and productibility of those tillers at each knot were investigated.
The result indicated: the productiability of tillers at the fifth, sixth and seventh knot are superior to the others in large seedling, and at the forth, fifth and sixth knot are superior to the others in the small seedling, under the general planting condition.