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- We filtrate forecast factors of spring crop yield in Yunnan Province using grey relational analysis and correlation analysis.The filtrated factors are used for yield forecast of 2004. 摘要将灰色关联度分析法与相关分析法分别应用于云南小春作物产量预报因子的筛选，并将用两种方法选出的因子用于2004年的产量预报。
- Study on a new method of crop yield forecast 作物产量预报新方法研究
- Crop yield correlates closely with annual rainfall. 农作物的收成与年降雨量有密切关系。
- Spatial resolution of precipitation and radiation: The effect on regional crop yield forecasts 降水和辐射的空间分辨率:对区域作物产量预报的影响
- One sweltering day, I was scooping ice cream into cones and tA STATISTICAL FORECASTING METHOD OF CROP YIELD old my four children they could "buy" a cone from me for a hug. 有一天天作物产量的预报方法气闷热，我将冰淇淋舀进锥筒，告诉我的四个小孩，他们可以从我这里用拥抱“购买”一筒。
- Ways of Improving Crop Yield Per Unit Area and the Countermeasures. 提高作物单产的途径与对策。
- The study of plant nutrition and growth as related to soil condition, especially to determine ways to increase crop yield. 农业生物学; 土壤生物学关于植物养分和与土壤条件相关的生长的研究，尤其是对判定如何增加农作物产量方法的研究
- Blackened circles denote accumulated temperatures and open ones crop yield. 涂黑圆圈表示积温,空白圆圈表示作物产量。
- The crop yields for the year are phenomenal. 当年的庄稼产量是惊人的。
- Effect of long-term single application of chemical fertilizer on soil properties and crop yield. 长期单施化肥对土壤性状及作物产量的影响。
- Effects of rice straw mulch and water-retaining agent on soil properties and crop yield. 施用保水剂和稻草覆盖对作物和土壤的效应。
- N2O is a gas released by ammonium nitrate, which is widely used as a fertilizer to increase crop yield. N2O是由硝酸铵释放出来的气体,硝酸铵是一种广泛使用的化学肥料用于增加农作物的产量。
- Study in Soybean Yield Forecast Application Based on Hopfield ANN Model WANG Li-shu QI Guo-qiang WANG Ke-fei Using the artificial nerve network's knowledge, establish the estimate's mathematics model of th. 通过运用人工神经网络的知识,建立了大豆产量预测的数学模型,可以提高预测大豆产量的精确性。
- Soybean futures traded on the Dalian Commodity Exchange settled at record highs yesterday, after the release of an influential forecast predicted lower crop yields for this year. 在大连商品交易所交易的大豆期货周三收盘创下历史纪录新高，原因是此前一份报告预测今年大豆产量可能会下降。
- Effect of plastic film mulching on crop yield and nitrogen efficiency in semiarid areas. 半干旱地区地膜覆盖对作物产量和氮效率的影响。
- Ex perimental results also indicated that sprinkler uniformity had little effect on crop yield for the studied range of CU. 试验结果还表明，在所研究的喷灌均匀系数范围内，均匀系数对产量的影响不明显。
- Vegetation Indies (VI) have been used to estimate crop yield and monitor crop growth for many years. 地表具有各项异性的特征，在监测地表植被时，经过大气纠正的数据，通过多时相和多角度合成时对于它的二向反射率必须经过角度归一化。
- The seed bourgeon ,seedling growth ,crop yield and heavy metals contents were influenced by contaminated soil. 土壤重金属污染影响了种子萌发、幼苗生长、作物产量及体内重金属含量,探讨了污染土壤的酶学评价方法。
- How to break crop yield stagnation is a serious question warranting an explanation. 如何打破作物产量徘徊的局面是应找到答案的一个严重问题。
- Fertilizer has a large influence on increasing crop yield, following practices, however, should be focused on MYR. 在高产研究中，充分发挥肥料的作用仍然是一项重要措施。目前应当注意以下几个问题。
