【摘要】 研究表明,晋中小麦不同群体密度、肥力、品种等栽培因素所构成的群体分蘖成穗率可达到30%～35%以上,精播高肥的甚至可达到50%～60%,这正是晋中以后降低播量、采取常量播种与半精播、甚至精播的理论依据。在晋中条件下,不论精播、半精播、常量播、超常量播都可以组成高产的合理群体结构。其中,土壤肥力是决定群体产量的首要基本因素,试验随肥力投资的提高产量显著提高,基础肥力的提高,特别是有机肥力的提高具有决定性的作用。更多还原

【Abstract】 The researches indicated that different density ?fertilizer and variety can make the rate of forming ears to 30%～35% , even to 50%～60% with precision sowing and high fertilizer . This is the basis on which Jinzhong may decrease the quantity of sowing , make use ofcommon Sowing and half-precision sowing , even precision sowing.In this condition , various style of sowing (precision sowing half-precision sowing common sowing ) all can form high-yield structure.The results also indicated that the soil fertilizer is the main factor which decides the yield,the yield increased with more fertilizer input,and more fundamental fertilizer,especially more organic fertilizer make a decisive role.更多还原