论文部分内容阅读
研究杂交玉米不同种植密度穗数、穗粒数、百粒重以及群体叶面积指数 (L AI)、群体光合势 (L AD)的变化规律。结果表明 ,大穗型杂交玉米公顷密度在 4 8千～ 57千株、最大 L AI在 3.9～4 .3,授精后 2 5天 L AI保持在 3.5以上 ,全期 L AD在 195万～ 2 15万平方米·天 ,构成产量的诸性状处于较优状态 ,玉米籽粒产量可达 6 0 0 0～ 6 50 0公斤
The changes of spike number per panicles, spikelets per spike, 100-grain weight and leaf area index (L AI) and population photosynthetic potential (LAD) of hybrid maize were studied. The results showed that the density of large-spike hybrid corn was between 48 and 57 thousand hectares, the maximum L AI was between 3.9 and 4.3, the L AI remained above 3.5 after 25 days of insemination, 150,000 square meters · day, the traits that constitute the yield in a better state, corn grain yield up to 6 0 0 ~ 6 50 0 kg