【摘要】 试验通过在滨海盐碱土上设置不同水稻旱直播密度,观察对水稻生长发育及产量的影响。结果表明:随着直播密度的变小,前期生长量变小,中后期生长量显著增加,有效分蘖期及分蘖高峰期后延,穗粒数显著增加。最佳直播密度为5kg/667 m~2,产量为667 kg/667 m~2,。更多还原

【Abstract】 In the experiment, we set different density of drought direct seeding on coastal saline-alkali land, and observed the effects on growth and yield. The result indicated: with the decrease of density, the early growth was smaller, and the middle and later growth increased significantly. The effective tillering stage and peak tillering stage delayed, spike grain number increased significantly. The best density of drought direct seeding on coastal saline-alkali land is 5 kg/667 m~2, and the yield is 667 kg/667m~2.更多还原