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两年来,我们学习总结群众经验,提出了不同品种、不同产量水平下,各个生育阶段合理的群体结构。根据对小麦产量因素形成规律的观察研究,总结了看苗管理的原则:1.根据分蘖、主茎叶片的同伴关系和分蘖两极分化的早晚,看苗管理,促进蘖足苗壮,提高分蘖成穗率,保证足够穗数。2.根据拔节前后出现的第9.10.11三片叶的长势长相,确定促、控管理措施,减少小花退化、增加结实粒数。3.掌握不同苗情类型籽粒子物质积累规律,加强后期管理,防止贪青、早衰,提高粒重。
In the past two years, we learned to summarize the experiences of the masses and put forward a reasonable group structure at all stages of birth under different varieties and at different levels of output. According to the observation and research on the forming rules of wheat yield, summed up the principles of seedling management: 1. According to the tillering, the relationship of the main stems and the polarization of the tiller, the seedling management, Spike rate, to ensure adequate spikes. 2. According to the emergence of the first 9.10.11 before and after the emergence of the three leaves of the growth phase to determine the promotion and control measures to reduce the floret degradation and increase the number of grains. 3. Grasp different seedling types of seed material accumulation law, strengthen the late management, to prevent greed, premature aging, improve grain weight.