双季水稻塑盘旱育抛栽基本苗公式的验证

Validation of the Basic Population Formulas of Dry-land Plastic Trays Seedling-raised with Scattered-planting in Double-season Rice(O.sativa.L)

以自拟基本苗公式计算出的苗数为中等群体,设置上下水平基本苗数各1个为对照,比较了早、晚稻塑盘旱育抛栽不同群体起点产量及其形成的差异。结果表明,中等群体处理的产量结构最优,在三处理中稻谷产量最高,其茎蘖消长与成穗、颖花伤流量、叶面积系数与结构以及干物质积累与转运总体上最为合理。本研究初步验证了所拟合出的塑盘旱育抛栽基本苗公式的正确性。

Taking the population calculated from the basic seedlings formulas self- drafted of the dry-land seedling - raised on plastic trays （DPT） with scattered - planting in double - season rice as the middling population, one population of the higher and the lower were set respectively, and the yields and yield formations of these different basic populations were compared. The results showed that yield structure of the middling population treatment were the most excellent as a whole and its grain yield was the highest among the three treatments, while the dynamic of tiller and its formation into panicles, root - bleeding intensity/spikeltes, LAI and its structure, dry matter accumulation and transportation were the most reasonable too. The research primarily validated the correctness of the formulas of the DPT with scattered - planting in double - season rice.