三膜覆盖与稀播稀植技术对水稻品种龙粳26秧苗素质与产量的影响

Effect of 3-plastic Mulch and Rare-planting Technique on Seedling Quality and Yield of Longjing-26

采用三膜覆盖与稀播稀植技术扩繁龙粳26,结果与常规水稻相比,繁育田的实际播量为89.8 g芽种/盘,每盘播量减少芽谷38.5 g;秧苗素质明显提高:叶龄增加了1.2片叶,根数增加了2.3条,根长增加了1.3 cm,茎基部宽增加了0.5毫米,百株地上干重增加0.92 g,百株地下干重增加0.27 g,带蘖率增加了8.7个百分点;移栽密度为37.6株/m2,减少79.2株/m2;繁育田产量694 kg/667 m2,增产12.7%,繁育倍数为301.7倍,比常规田提高了62%。

Expanding propagating Longjing-26 by 3-plastic mulch and rare-planting technique, sowing quantity were 108.8 g/plate, transplanting density were 36.6 plant/m2, the result indicated that compared with the conventional farming system, it can enhance seedling qualities evidently which increase leaf age by 1.2, increase root number by 2.3 and root length by 1.3 era, increase stem base by 0.5 ram, increase 100 plants shoot and root dry matter weight by 0.92 g and 0.27 g, increase the tiller occurrence rate by 8.7%. the yield was 694 kg/667 m2 with a yield increasing rate of 7.95%, breeding multiple were 2.774 than conventional field.