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- It is recommended that PPIC may sponsor MYR in Pakistan as it will help identify factors limiting high crop yield and evolve appropriate strategy for increasing yields at national level. 还建议PPIC可以在巴基斯坦发起最高产量研究,因为这会有助于鉴别限制作物高产的因素,并发展出在全国水平上增产的适当战略。
- In Iowa, that region is the north-western part of the state, which enjoys high crop yields but gets 25-50 cents less per bushel because it is too far from the Mississippi river barges. 在艾奥瓦,类似的地区处于该州西北部,虽然农业产量高,但每蒲式尔少挣25到50美分,因为该地区远离密西西比河驳船码头。
- One of those ways, associated with higher crop yields, is to be sure that limitations of some other nutrient do not detrimentally affect N uptake and use. 其中一个与高产有关的方法是保证一些其它养分的限制不对氮的吸收利用造成有害影响。
- a high crop yield 丰收
- High crop yield 作物高产
- Crop yield correlates closely with annual rainfall. 农作物的收成与年降雨量有密切关系。
- Ways of Improving Crop Yield Per Unit Area and the Countermeasures. 提高作物单产的途径与对策。
- The activity of soil microorganism is inhibited at low dose. At high dose, the crop yield is decreased by 10%, and on acid soil,by 50%. Alfalfa and tree are also yield decreased. 低剂量时 ;即可使土壤微生物活性受到抑制 ;高剂量时可使农作物减产 1 0%25 ;在酸性土壤上减产达 50%25以上 ;对苜蓿及树木也同样引起减产 .
- 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。
- Constraints to High Crop Yields 限制作物高产的因素
- Remarkable yield difference was found between the two experimental plots with row spacing of 30 versus 60 cm, the former giving 30% higher crop. 这两块行距为30公分和60公分的实验地中产量有显著差异,前者高出30%25。
- 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。
- 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。