论文部分内容阅读
春小麦覆膜穴播栽培比露地穴播和条播栽培每亩产量分别增加５０．２ｋｇ和９３．６ｋｇ，增产９．２％和１８．６％。其增产机理是：出苗早，生育天数延长，有利于小麦器官建成；幼穗分化时间提早，历经总天数延长８天，有利于小麦穗大、粒多；籽粒灌浆时间延长，干物质积累多，有利于粒重的提高。产量构成因素中，覆膜穴播比露地穴播和条播亩穗数增加１．２万和３．３万，每穗平均粒数增加１．９和１．１粒，千粒重与露地穴播接近，较条播增加２．３ｇ。
Compared with the open-field and sow-sowing cultivation, the yield of spring wheat film-mulched sowing increased by 50.2kg and 93.6kg per acre respectively, increased by 9.2% and 18.6%. The mechanism of increasing yield was: early emergence of seedlings and prolonged fertility days were beneficial to the establishment of wheat organs. The differentiation of young spikes was earlier and the total days prolonged for 8 days, Will help improve grain weight. Among the components of yield, mulching increased by 12000 and 33000 per mu compared with open-field mulching and mulching, while the average grain number per panicle increased by 1.9 and 1.1 kernels. Increase 2.3g.