Calculation of critical area is the base of yield prediction.
关键面积的计算是成品率估计的基础。
Foodstuff yield prediction is a very complicated reasoning process.
粮食作物产量预测是一个非常复杂的知识推理过程。
The basal growth prediction is a kernel factor and foundation in the model system of stand growth and yield prediction.
断面积生长预估是林分生长和收获预估体系中的核心因子和基础。
Models on thinning effects on basal growth prediction are the kernel of the model system of stand growth and yield prediction.
断面积生长间伐效应模型的研究是林分生长和收获预估模型体系研究摘要的核心内容。
The results showed that the feasibility of the prediction factors and the accuracy of the wheat yield prediction were improved by using connection degree.
并对新昌县小麦产量进行预报试验，结果表明，联系度的引进改进了预报因子的合理性，能提高小麦产量预报的准确性。
Rice is one of the most important crops in Heilongjiang province. It is significant to study rice yield prediction method for food production in this region.
水稻是黑龙江省主栽作物之一，开展水稻产量动态预报对黑龙江省粮食生产具有重要意义。
The results show that the models are satisfactory and could be extended in the application of maize yield prediction, field management guidance, and other aspects.
结果表明，模式性能良好，可以在玉米产量预测、指导田间管理等方面推广应用。
This article describes the relation between latex vessel systems in the bark of young buddings and the leaf of yearling buddings and yield prediction at nursery stage.
本文研究无性系幼树树皮及一年生苗叶部的乳管系与产量早期预测的关系。
The algorithm was applied to estimating the model parameters of coal yield prediction by using its global optimization performance, and a high precision model was founded.
利用遗传算法的全局寻优特点，将它应用于模型参数估计，建立了精度更高的煤炭产量预测模型。
The Uncertainty of the prediction factors which influenced the crop yield under natural conditions was one of the key issues which determined the veracity of the crop yield prediction.
影响作物产量预报准确性的关键问题之一是自然条件下预报因子对作物产量影响的不确定性。
The yield prediction method, which can find out the weak member to be yielded, its yield type and the yield moment of a building structure under certain intensity of seismic action, is presented.
提出的建筑结构抗震设计屈服判别法是判别实际结构在地震作用下构件屈服部位、屈服类型及屈服时间的一个有效可行的方法。
Then the output in next five years was forecasted by setting up a GM(1,1)Prediction Model about yield of municipal solid waste.
建立了合肥城市生活垃圾年产量的预测GM（1，1）模型，并对合肥市未来五年的生活垃圾产量进行了预测。
At last, the prediction model of climate yield of local cotton is established, which has surely value.
最后建立了各地棉花气候产量预报模式，具有一定的实用价值。
Aims Accurate simulation of green area index is critical for reliable prediction of crop growth and yield using a crop growth model.
准确模拟绿色面积指数是作物生长模拟模型可靠预测作物生长和产量的关键。
Owing to a lot of uncertain factors influencing the grain yield, its prediction has always been a difficult point.
粮食产量受到多个不确定因素的影响，它的预测历来是一个难点。
Proppant back-production prediction software is also present in this paper, which can determine the critical gas flow rate and critical daily yield for proppant flowing back.
根据上述的基础理论研究，编制了压裂气井生产过程中支撑剂回流预测软件，该软件可预测支撑剂发生回流的临界气流速度和临界气井产量。
Yield decline prediction model has become an important measure for the research of oil and gas prediction, which is widely applied to the research of oil and gas reservoir engineering.
产量递减预测模型已成为油气藏预测研究的重要手段，广泛应用于油气藏工程研究之中。
The paper theoretically investigates housing cycle and inverted yield curve and empirically tests the result of combined prediction of economic recession by these two variables.
本文对房地产周期与收益率曲线反转对经济衰退的预测两个变量的联合预测进行了理论探讨和实证检验。
The prediction model between biomass, climate productivity and statistic yield in different DVS are built. The test of prediction shows that the correlations are not significant.
建立生物量、气候生产力与社会产量之间的有效预报模型是以后产量预报研究中需要深入探讨的问题。
Precise prediction to Bauschinger's effect values is given based on the study of tensile yield strength for pipes, so does the range of yield strength supplied.
通过对管材抗拉屈服极限的研究，提出要准确地估计包辛格效应值，并应定出供货的屈服极限范围。
This paper introduces the major mathematic models of synthetic prediction of crop yield, including separation of trend factor and trend yield, simulation of trend yield;
介绍了农作物产量综合预测的建模思路以及建模各阶段的主要算法。包含农作物产量预测的趋势因子和趋势产量的分离；
Prediction of surrounding rock permeability in tunnel is the base of estimating the water gushing yield for deep lying tunnel.
围岩渗透性预测是深埋隧道涌水量评估的重要基础。
Thus, for the prediction of yield heterosis, SRAP markers are better than SSR markers.
因此，在利用分子标记技术预测油菜的杂种优势时，SRAP标记效果更好。
Thus, for the prediction of yield heterosis, SRAP markers are better than SSR markers.
因此，在利用分子标记技术预测油菜的杂种优势时，SRAP标记效果更好。
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