您要查找的是不是：
- wheat planting density 种植密度
- Experiments on different sowing dates，planting density and fertilizer proportion of wheat were done in the South and North part of Huaihe River in Jiangsu Province. 在江苏省淮南、淮北地区设置小麦不同播种期、密度及肥料比例试验，研究小麦高产群体叶面积的质量特征。
- Objective：To study optimum planting density and sowing depth of Tulipa edulis. 目的：研究光慈菇最佳的人工栽培密度、深度等。
- Hole sowing and higher planting density were beneficial to silage maize. 高密度取穴播对提高青贮玉米产量有较好效果。
- Plant density have higher effect on ear characters than nitrogen application. 密度比施氮量对果穗穗部性状的影响更大些。
- Last year, wheat planting eara in this part increases to three fifths of this region. 去年,这个地区种小麦土地面积增加到全地区耕地面积的五分之三。
- The wheat planting eara in this region increased to 3/5 of the whole planting eara. 去年,这个地区种小麦土地面积增加到全地区耕地面积的五分之三。
- The area of plowland for wheat planting in this area added up to 3/5 of that of the national plowland. 去年,这个地区种小麦土地面积增加到全地区耕地面积的五分之三。
- The effect of straw and plastic film dual mulch on the ecological environment in the farmland and the yield of wheat planting was studied. 研究了秸秆与地膜二元覆盖栽培对小麦田间生态环境及产量的影响。
- Irrigation status, nitrogenlevel,crop variety and planting density had no influence on A.flavi quantity in soil. 灌溉状况、施氮水平、作物品种和种植密度对土壤中黄曲霉数量没有影响。
- Effect of enhanced UV-B radiation on chemical composition, fungnl colonization and decomposition of spring wheat plant. 增强的UV-B辐射对春小麦植株化学成分、真菌定殖和分解的影响。
- Conclusion: Reasonable planting density can improve the output and quality of saff lower crude drug. 结论:合理的种植密度可以提高红花药材的产量和品质。
- Farmers in Rawalpindi District of Pakistan tractor cultivate or animal plough their fields on average 8 times from the beginning of the monsoon until wheat planting. 巴基斯坦拉瓦尔品第地区的农民从季风季节开始到种麦，平均用拖拉机或畜力犁耕翻8次土壤。
- The planting density showed little impact on sapwood width, while it had highly significant effects on wetwood width. 栽植密度对边材宽度影响不大,而对湿心材宽度影响达极显著水平;
- Heavy rain and flooding in the lowlands damaged wheat planted in the winter. 低地的强降雨和洪水毁坏了冬天种植的小麦。
- The disease kills wheat plants by robbing them of water and nutrients. 这种病害通过吸取小麦作物的水和营养而杀死小麦。
- The development and formation of above-ground organs in wheat plant were simulated systematically and comprehensively, including leaf blade, internode and tiller. 对小麦植株地上部器官形成过程进行了较为系统、全面的模拟研究，建立了包括叶片、节间和分蘖的解释性动态模型。
- Study on the initial planting density and its adjustment of Pinus sylvestris var. Mongolica Litvin. Artificial forest in the sand land. 沙地樟子松人工林初植密度及其调控研究。
- This strain of wheat can grow during a cold spring. 这种小麦可以在寒冷的春天生长。
- Effect of plant density and fertilizer application on plantain yield in two soils from Colombia with different natural fertility is shown (Table 2). 表2说明了在哥伦比亚的两种不同天然肥力土壤上种植密度及肥料用量对大蕉产量的影响。
