直播水稻产量高、种植方便，已成为青浦地区水稻的主要栽培方式。栽培面积的比例，已从１９９６年的５５％扩大到２０００年的８７％，目前已达１．７４万ｈｍ２。直播水稻一般于６月上旬播种，１０月底开始收割，在大田的生长期较长，且分蘖多、密度高、田间郁闭，较常规移栽 Direct-seeded rice has high yield and convenient planting, and has become the main cultivation mode of rice in Qingpu area. The proportion of cultivated area has been expanded from 55% in 1996 to 87% in 2000 and now it has reached 17,400 hm2. Direct seeding rice is generally sowed in early June and harvested at the end of October. It grows longer in the field and has more tillers, higher density and closed canopy than conventional transplanting