水稻孔穴塑盘育秧技术研究

应用不同播种方式和灌溉方法研究了孔穴塑盘育秧实用技术，结果表明：１）土种分播每孔穴４～５粒芽谷，播后浸润沟灌，出苗穴率和成苗效率较高，土种混播或泥浆播种，虽较省工，但成苗率不如土种分播；播后淹灌或浇灌，易引起烂种烂芽，２）每盘播８０ｇ芽谷以下随播种量增中空穴减少，播种量超过每盘８０ｇ芽谷虽空穴减少，但秧苗素质下降，３）床土混土重０．５％的ＮＰＫ营养剂有利于培育强壮秧苗，不添加ＮＰＫ营养则秧苗较弱

STUDIES ON THE TECHNIQUE FOR RAISING RICE SEEDLINGS WITH HONEYCOMB TRAY

The experiment with some method for raising rice seedlingwith honeycomb tray was conducted. The results showed as follow:1 The method of seeds sown dividing. from raising soil appeared higheremerging rate, higher seedling .rate and more seedlings per hole than thatof seed sown with raising soil or raised with mud soil. The moist irrigation appeared higher seed emeiging rate, lover no seedling hole rate andmore seedlings per hole.than that of basin - irrigation or watering irrigation.2 Below 80 g of emerged seed sown in per tray, with the seed sownamonut incercased the seedling rate and seedlings per hole increasaed. whileover thal the seedling qualily decreased.3 with 0.5% of NPK nutrition mushed in raising soil the seedlings grewstrong weith high seedling rate. While with no nutrition the seedlingsshowed weak. And over 0.5% NPK nutrition mushed in raising soil theemerged seed should be damaged easy.4 At the stage of one teaf seedling, using 300mg/kg pp333 to sprayin seedling is helpful to raising tow and strong seedtings, increase seedling root emergence and growth and slow down the seedling growth, whichincreased the transplanting elisticity of seedling.