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- Ways of Improving Crop Yield Per Unit Area and the Countermeasures. 提高作物单产的途径与对策。
- Of the addition that covers an area and domain extend, the synchronism that assures crop yield per unit and benefit further rises. 覆盖面积的增加和领域的拓展,进一步保证作物单位面积产量和效益的同步提高。
- crop yield per capita 按人口平均收获量
- Grain crop yield per unit area 粮食单产
- Crop yield correlates closely with annual rainfall. 农作物的收成与年降雨量有密切关系。
- 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。
- Also rape seed yield per area in the mix cropping system was the highest. 间作与混作处理的油菜产量在可比面积上比油菜单作产量高,其中混作产量最高。
- 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。
- In order to meet the demand of growing population, there exists an urgent need in raising the yield per hectare. 为了满足人口增长的需要,迫切需要提高单位面积产量。
- 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。
- In 1952 the average grain yield per mu (one ha equals 15 mu) was 80 kg and there were only 125 kg of grain per person. 1952年,西藏每亩(15亩合1公顷)粮食产量平均只有80公斤,人均占有粮食仅125公斤。
- 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。
- American farmers are known worldwide for their ability to produce a large yield per hectare. 美国农民能在每公顷土地上生产出大量的作物,这使他们闻名世界。
- 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。
- Relation Analysis of Several Agronomic Traits and Yield Per Plant in Brassica napus L. 甘蓝型油菜若干农艺性状与单株产量的关系分析。
- 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。
- Increasing the yield per unit area on the existing cultivated land has potential. 提高现有耕地单位面积产量有潜力。