杂交晚稻长秧龄旱育秧播量试验

The research on Sowing Quantity of Raising Seedlings Drily of Late Rice

本项研究，“低”播量与“中”、“高”播量产量差异均达显著水平，并且低播量较耐迟插，增产幅度比“中”、“高”播量大。“低”播量栽培的高产特性：1、单株茎基宽带蘖多，是分蘖早发增穗的基础；2、孕穗始期，齐穗期提早，有利提高成穗率，提高结实率，增加千粒重。

The difference of low sowing quantity from middle and high sowing quantltyin yield is marked. Low sowing quantity is resistant to transplanting seedlings late.The amount of increase in production of low sowing quantity is larger than that of mid-dle and high sowing quantity. The specific properties of high yield of low sowing quantity incultivation are as the follows: 1. The stem base of the individual plant is wide and the tillersof it are many. The are the foundations of tillering,rooting early and increasing cars. 2. It isbeneficial to raising the survival rate of the ears and the rate of bearing grains and increasingthe weight of a thousand grains that the time when the ears are even is earlier than usual atthe beginning of growing ears.