Tech&Learn.com的作品

最相关最新下载最多
共261个相关结果
最相关最新下载最多
筛选
canola at cotyledon stage in the field.

ID:397638371 canola at cotyledon stage in the field.

soybean in V3 stage - third trifoliate

ID:229533390 soybean in V3 stage - third trifoliate

center-pivot irrigation being used to water soybean in Wisconsin

ID:468801466 center-pivot irrigation being used to water soybean in Wisconsin

Canola plant in bud stage.

ID:397637464 Canola plant in bud stage.

Canola plant in bud stage.

ID:229675645 Canola plant in bud stage.

continuous corn

ID:627370328 continuous corn

Young sorghum plant (three visible collars)

ID:229720010 Young sorghum plant (three visible collars)

continuous corn

ID:628608303 continuous corn

canola seed germinating - with treated seed coat

ID:397636913 canola seed germinating - with treated seed coat

田野中处于早期莲座期的油菜。

ID:397637774 田野中处于早期莲座期的油菜。

soybeans growing up through corn stover in a no-till planting

ID:229501201 soybeans growing up through corn stover in a no-till planting

开放的油菜花特写，带有风格和柱头。_00028

ID:229627262 开放的油菜花特写，带有风格和柱头。_00028

Soybean in V2 stage. Second trifoliate extended._00007

ID:229526919 Soybean in V2 stage. Second trifoliate extended._00007

soybean aphids on a soybean leaf while feeding

ID:467443161 soybean aphids on a soybean leaf while feeding

redwing blackbird in reintroduced prairie in Iowa

ID:467445943 redwing blackbird in reintroduced prairie in Iowa

Canola seedling in the first leaf stage.

ID:397636738 Canola seedling in the first leaf stage.

canola seed germinating - with treated seed coat

ID:397636912 canola seed germinating - with treated seed coat

Canola young plant in the second leaf stage on black background

ID:397636687 Canola young plant in the second leaf stage on black background

Open canola flower close up with style and stigmas.

ID:397636619 Open canola flower close up with style and stigmas.

soybeans growing up through corn stover in a no-till planting

ID:229503723 soybeans growing up through corn stover in a no-till planting

大豆 V2 阶段 - 第二片三出复叶 - 黑色背景带尺子

ID:229536711 大豆 V2 阶段 - 第二片三出复叶 - 黑色背景带尺子

soybean in V2 stage - second trifoliate - on black background with ruler

ID:229543320 soybean in V2 stage - second trifoliate - on black background with ruler

soybean in V2 stage - second trifoliate - on black background with ruler

ID:229536677 soybean in V2 stage - second trifoliate - on black background with ruler

处于 VC 阶段的大豆 - 子叶和单叶完全展开

ID:229492713 处于 VC 阶段的大豆 - 子叶和单叶完全展开

grain wagon sitting at edge of corn field

ID:229832751 grain wagon sitting at edge of corn field

japanese beetle pheremone trap filled with beetles

ID:229615294 japanese beetle pheremone trap filled with beetles

japanese beetle pheremone trap filled with beetles

ID:229612332 japanese beetle pheremone trap filled with beetles

soybean at R7 stage - beginning maturity

ID:229478637 soybean at R7 stage - beginning maturity

soybean in V5 stage - fifth trifoliate

ID:229476717 soybean in V5 stage - fifth trifoliate

soybean at R3 stage - beginning pod_00003

ID:229474889 soybean at R3 stage - beginning pod_00003

Sorghum seedling in the first leaf stage

ID:229723071 Sorghum seedling in the first leaf stage

soybean at R8 - full maturity

ID:229565226 soybean at R8 - full maturity

soybean at R4 stage - full pod

ID:229562304 soybean at R4 stage - full pod

soybean at R1 stage - beginning flower

ID:229562290 soybean at R1 stage - beginning flower

soybean at R8 stage - full maturity

ID:229552880 soybean at R8 stage - full maturity

soybean in V1 stage - first trifoliate

ID:229552324 soybean in V1 stage - first trifoliate

soybean in R2 stage - full flower

ID:229552323 soybean in R2 stage - full flower

soybean at R6 stage - full seed

ID:229549513 soybean at R6 stage - full seed

soybean in V1 stage - first trifoliate

ID:229549504 soybean in V1 stage - first trifoliate

soybean in the field at VC stage - cotyledons and unifoliate leaves fully expanded

ID:229543332 soybean in the field at VC stage - cotyledons and unifoliate leaves fully expanded

white soybean flowers and pubescent stems

ID:229492366 white soybean flowers and pubescent stems

Black angus cow in a fild in South Dakota

ID:468801486 Black angus cow in a fild in South Dakota

湿润区域田边的农业排水瓦。田间的车轮痕迹显示出可能的压实区域，因为土壤湿度可能会加剧压实程度。

ID:467430257 湿润区域田边的农业排水瓦。田间的车轮痕迹显示出可能的压实区域，因为土壤湿度可能会加剧压实程度。

干旱受灾的玉米植株呈现出卷叶现象。卷叶是由于植株水分流失造成的，在干旱时期经常出现。

ID:468801428 干旱受灾的玉米植株呈现出卷叶现象。卷叶是由于植株水分流失造成的，在干旱时期经常出现。

a deer looking out of a prairie area in Iowa

ID:467445957 a deer looking out of a prairie area in Iowa

采摘后即刻成熟的油菜叶

ID:466022209 采摘后即刻成熟的油菜叶

Wrapped and stacked round bales ready for feeding.

ID:468801443 Wrapped and stacked round bales ready for feeding.

A small cucumber growing on the vine in a garden

ID:466811567 A small cucumber growing on the vine in a garden

Waterfall at Dunning Springs in Northeast Iowa

ID:466810986 Waterfall at Dunning Springs in Northeast Iowa

A small gnome village built beside a silver maple tree.

ID:466809392 A small gnome village built beside a silver maple tree.

four feed bins side-by-side on a cattle farm

ID:466809410 four feed bins side-by-side on a cattle farm

A bulldozer with GPS sitting idle in a farm field.

ID:466025687 A bulldozer with GPS sitting idle in a farm field.

center-pivot irrigation tubing being laid in a sandy soil in Wisconsin

ID:467445979 center-pivot irrigation tubing being laid in a sandy soil in Wisconsin

A monarch butterfly caterpillar climbing a prairie plant

ID:467445970 A monarch butterfly caterpillar climbing a prairie plant

Milford Sound area New Zealand. A mountain river flowing through boulders.

ID:467434134 Milford Sound area New Zealand. A mountain river flowing through boulders.

Sheep grazing in a field

ID:467433514 Sheep grazing in a field

stover bale

ID:465312278 stover bale

Stack of pumpkins

ID:465307304 Stack of pumpkins

Pumpkin on pedestal

ID:465307277 Pumpkin on pedestal

乳熟粒期后的小麦植株

ID:429481537 乳熟粒期后的小麦植株

Canola seedling in cotyledon stage on black background with ruler.

ID:397636762 Canola seedling in cotyledon stage on black background with ruler.

Canola closed green silique close up with seeds showing through translucent seed pod.

ID:397638149 Canola closed green silique close up with seeds showing through translucent seed pod.

Canola flower close up.

ID:397638047 Canola flower close up.

Canola green and mature opened siliques with seeds on black background with ruler.

ID:397637878 Canola green and mature opened siliques with seeds on black background with ruler.

Open canola flower close up with style and stigmas.

ID:397636647 Open canola flower close up with style and stigmas.

Canola bud stage plant on black background.

ID:397638212 Canola bud stage plant on black background.

Canola flowering stage - pod development low on the plant while flowers are still at top of plant.

ID:397638024 Canola flowering stage - pod development low on the plant while flowers are still at top of plant.

Canola flowering stage before pods

ID:397638017 Canola flowering stage before pods

Canola gseedling in cotyledon stage.

ID:397637833 Canola gseedling in cotyledon stage.

Canola plant beginning stem elongation with black background.

ID:397637460 Canola plant beginning stem elongation with black background.

Canola young plant in the second leaf stage on black background with ruler.

ID:397636679 Canola young plant in the second leaf stage on black background with ruler.

Canola seedling breaking through the soil surface with a hooked hypocotyl.

ID:397636792 Canola seedling breaking through the soil surface with a hooked hypocotyl.

黑底背景下带有种子的油菜绿色长角果已开口

ID:397637634 黑底背景下带有种子的油菜绿色长角果已开口

Canola opened green silique with seeds on black background.

ID:397637608 Canola opened green silique with seeds on black background.

Canola seedling breaking through the soil surface with a hooked hypocotyl.

ID:397636828 Canola seedling breaking through the soil surface with a hooked hypocotyl.

Young canola plant with taproot on black background with ruler.

ID:397636556 Young canola plant with taproot on black background with ruler.

Canola at first leaf stage in the field

ID:397638334 Canola at first leaf stage in the field

Canola plant in bud stage.

ID:397637412 Canola plant in bud stage.

Canola rosette stage with 8 leaves.

ID:397637021 Canola rosette stage with 8 leaves.

Canola seed germinating

ID:397636926 Canola seed germinating

Canola seedling breaking through the soil surface with a hooked hypocotyl.

ID:397636872 Canola seedling breaking through the soil surface with a hooked hypocotyl.

Wheat spikelet from wheat head

ID:397625639 Wheat spikelet from wheat head

Fall colors on red oak leaves

ID:230459554 Fall colors on red oak leaves

play structure at a city park on a bright fall day

ID:230455689 play structure at a city park on a bright fall day

soybean nirtogen-fixing root nodule

ID:229524148 soybean nirtogen-fixing root nodule

Canola - closed mature and green siliques on black background with ruler.

ID:397638386 Canola - closed mature and green siliques on black background with ruler.

Canola closed green silique on black background with ruler.

ID:397638119 Canola closed green silique on black background with ruler.

成熟的油菜角果关闭

ID:397638081 成熟的油菜角果关闭

Canola closed mature silique on black background with ruler.

ID:397638060 Canola closed mature silique on black background with ruler.

Canola flowering stage before pods

ID:397637997 Canola flowering stage before pods

Canola green and mature opened siliques with seeds on black background with ruler.

ID:397637851 Canola green and mature opened siliques with seeds on black background with ruler.

Canola mature seed on black background with ruler.

ID:397637710 Canola mature seed on black background with ruler.

Canola open green silique with seeds.

ID:397637686 Canola open green silique with seeds.

Canola open mature silique with mature seeds on black background with ruler.

ID:397637664 Canola open mature silique with mature seeds on black background with ruler.

Canola open mature silique with mature seeds on black background.

ID:397637646 Canola open mature silique with mature seeds on black background.

Canola plant at early flowering on black background.

ID:397637598 Canola plant at early flowering on black background.

油菜植株开始茎伸长

ID:397637577 油菜植株开始茎伸长

Canola plant beginning stem elongation with black background.

ID:397637532 Canola plant beginning stem elongation with black background.

Canola plant beginning stem elongation with black background.

ID:397637508 Canola plant beginning stem elongation with black background.

Canola plant in the bud stage in the field.

ID:397637416 Canola plant in the bud stage in the field.

1/3
  • 总页数3页

京ICP备15019536号 增值电信业务经营许可证 京B2-20210167京公网安备 京公网安备 11010502045846号 网络文化经营许可证 京网文〔2023〕2258-086号网信算备：110105951222401250011号