淮北小麦灌浆特性及与气象条件的关系研究

通过小麦灌浆动态与气候条件的平行观测分析,探讨淮北小麦灌浆特性和气候因素对灌浆速率的影响。结果表明:小麦千粒重增长呈慢—快—慢的变化趋势,灌浆速率最大值出现在开花后16~18 d,千粒重增长可用Logistic生长曲线拟合,灌浆速率可用二次多项式模拟。小麦相对灌浆速率与灌浆期间的平均温度、最高温度、最低温度和平均水气压呈抛物线关系,过高过低对小麦灌浆均不利;与气温日较差和日照时数呈正相关。日平均气温在16.9~23.5℃,日照时数多,气温日差较大,对小麦灌浆有利。生产上既要重视前期管理,使麦株个体健壮,群体合理,贮存较多有机物质;又要重视后期管理,养根保叶,增加光合产物。

Huaibei Wheat Grouting Charaeieristic and with Meteorological Condition Relational Research

Through wheat grouting tendency and climatic conditions parallel observation analysis, Has discussed the Huaibei wheat grouting characteristic and the climatic factor to the grouting speed influence. The result indicated that, The wheat weight of a thousand seeds growth assumes the slow-quick-slow change tendency, The grouting speed maximum value appears after blossoms 1618d, The weight of a thousand seeds grows the available .Logistic growth curve fitting, Grouting speed available two multinomial simulation. The wheat relative grouting speed and the grouting period average temperature, the maximum temperature, the lowest temperature and the average water barometric pressure assume the parabola relations, Crosses Gao Guedi to be in the milk to the wheat disadvantageously; Is bad with the temperature date and the sunshine hour present correlation. Daily average temperature in 16.9 - 23.5 % between, The sunshine hour are many, The temperature difference in duration of sunshine is big, Is in the milk advantageously to the wheat. Produces already must take the earlier period management, Causes the wheat adult plant individual to be vigorous and healthy, The community is reasonable, Storing are many the organic matter; Also must take the later period to manage, Also must take the later period to manage, Raises the root to guarantee the leaf, Increase photosynthesis product.