1) plastic film cover and once fertilization
地膜覆盖一次性施肥
1.
By plastic film cover and once fertilization, the amount of leached nutrients in the soil was reduced, fertilization amount was about 12% less than that of naked bed planting, the soil surface temperature was increased by 3.
地膜覆盖一次性施肥可减少土壤养分淋失,施肥量比裸畦习惯施肥的减少12%左右;并可提高畦内温度3。
2) single fertilization
一次性施肥
1.
This study was conducted on scale of maize single fertilization,distribution of maize production regions,application amount of fertilizer,economic input and production status of high N compound fertilizer in Jilin,using fertilizer statistics and sampling information from farmers and fertilizer sellers.
利用肥料统计资料、农户和肥料经销商的抽样调查资料,对吉林省玉米一次性施肥的规模、分布区域、施用量、经济投入及玉米高氮复混肥的生产状况进行了调查和分析。
4) one-off double-layer fertilization
一次性双层施肥
1.
Effects of different transplanting depths with one-off double-layer fertilization on growth,yield and quality of flue-cured tobacco;
不同移栽深度结合一次性双层施肥对烤烟生长及产量品质的影响
2.
The effects of transplanting in depth with one-off double-layer fertilization were studied on growth and development of flue-cured tobacco(K326).
以烤烟K326为材料,进行深移栽结合一次性双层施肥对烤烟生长发育影响的试验。
5) single basal application
一次性全层施肥
6) totally basal dressing techniques
一次性施肥法
补充资料:地膜覆盖(plastic membrane mulching)
地膜覆盖(plastic membrane mulching)
用塑料薄膜覆盖地面的一种栽培措施。一般采用厚度为0.015mm左右的高压聚乙烯透明塑料微薄膜,有透光性好、导热性差、不透气,在低温易冻、热量不足条件下,可起增温、保墒、改善近地面气层的光热条件,促进土壤微生物活动,改善土壤理化性质,提高CO2浓度等作用。东北、华北和西北等地区,在棉花、花生、烟草、水稻、小麦、玉米、甘薯、马铃薯等方面获得明显的增产效果。
塑料微薄膜的种类有透明膜、黑色膜、灰色膜、黑白双重膜、铝箔膜等;有在薄膜内面涂有除草剂或杀虫剂的杀草膜或防虫膜;有按栽植作物株行距要求开好孔的有孔膜,还有厚度仅为0.008mm的低压聚乙烯微薄膜,每公顷用量仅为一般高压膜的40%左右。
覆盖方式有行间覆盖与根区覆盖,根区覆盖又可分为畦作覆盖、垄作覆盖、平作覆盖和沟作覆盖。
地膜覆盖度的计算方法,是以塑料薄膜的宽度和行距之比表示。生产上应用的覆盖度大多为50-80%。可分为两种形式:先播种后覆膜和先覆膜后打孔播种。覆盖时间,干旱少雨地区,早春整地或选墒后立即覆膜,防止土壤水分蒸发,待适温时播种,以保全苗。但春风较大的地区,不宜过早覆膜,以防大风揭膜。雨量较多或土壤水分充足的地区,可在播种前后覆膜。
覆盖时要将薄膜展开拉紧,使之紧贴地面,不得产生皱褶松弛或损坏膜面。薄膜的两侧、两头都要开沟埋入土中,边覆边埋,压紧压严。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条