方法在大田栽培条件下观测调查。
MethodsObservation and investigation under the culture condition in the land.
在大田栽培条件下，研究了施钾量对北沙参生长、产量和品质的影响。
Under field condition, effects of potassium application rate on growth, yield and quality of Glehnia Littoralis roots were studied.
在大田栽培条件下，研究了电子生物处理对花生生育进程及产量的影响。
Under the condition of field cultivar, studied on effects of electron treatment on the development process and yield of peanut.
1985年，研究了群体水培和大田栽培条件下水稻不同类型品种根系活力的叶龄进程。
In 1984-1985, the root activities with leaf-age-progress was investigated in different rice varieties cultivated in nutrient solution and in field.
结论大田栽培中，随着光照的不断加强，可以适当的逐渐增加半夏遮荫的力度，但最高遮荫率不宜超过40%。
CONCLUSION With the intensifying of sunlight, the shady degree can be strengthened step by step in cultivation, but the hightest rate should be less than 40%.
宽垄沟灌作为一种大田作物栽培灌水方式已逐步受到关注。
As a cultivation and irrigation method for field crops, wide ridge and furrow irrigation have already been paid attention gradually.
将施肥技术和栽培措施相结合，通过大田试验研究不同移栽深度结合一次性双层施肥对烤烟生长及土壤养分的影响。
The effects of different transplanting depths combined with one-off double-layer fertilization on the growth of flue-cured tobacco and nutrient contents of soil were studied in the field experiment.
在大田高产栽培条件下，研究了不同施氮水平对豫麦49-198根际微生物和土壤酶活性的影响。
The effect of nitrogen fertilizer on soil enzymatic activity and rhizosphere microorganisms of Yumai 49-198 root system was studied in this paper.
采用土柱模拟栽培法与大田试验相结合的方法，对松嫩平原不同株型玉米的根系分布特征进行了比较。
In a soil column culture and a field experiment, the comparison of root distribution of spreading-leaf and upright-leaf maize cultivars in Songnen Plain was studied.
2007年夏季，在一般大田常规栽培条件下，通过分期采摘茎尖的方法，对叶菜型甘薯品种百薯1号的薯块产量和品质进行了研究。
Under normal field condition, using spot picking tip method, the tuber yield and quality of sweet potato Baishu 1 as leaf-vegetable sweet potato were studied in 2007 summer.
采用大田小区栽培，研究了不同留茬高度和刈割时草长对饲草玉米saumz1(以下简称饲草玉米)产量和饲用品质的影响。
A field plot experiment is conducted to study the effects of stubble height and clipped grass length on yield and quality of forage maize SAUMZ1.
用美洲狼尾草与非洲象草进行远源杂交，选育出了适应亚热带气候条件栽培的热带牧草王草新品种，并大田观察其生物学特性。
The new breed of pennisetum pureum tropical forage grass has been cultured which is accustomed to the sub tropic climate condition via introduction and choosing of hybridization.
在大田条件下研究了不同多穗型小麦旗叶光合色素含量、叶片抗衰老酶活性及籽粒灌浆参数的差异，为小麦的高产超高产栽培提供一定的理论依据。
The paper studied the photosynthetic pigments content, anti-aging enzyme activity and filling parameters of different muti-spike-type wheat cultivars in order to provide theoretical basis.
原本种植一般作物的大田，在以大棚方式栽培蔬菜后，其土壤性质会发生一系列的变化。
It is known that some changes will happen in soil properties and environment in vegetable green houses as is compared with those of original open-fields.
原本种植一般作物的大田，在以大棚方式栽培蔬菜后，其土壤性质会发生一系列的变化。
It is known that some changes will happen in soil properties and environment in vegetable green houses as is compared with those of original open-fields.
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