适宜在春秋露地及保护地栽培。

In autumn production and site cultivation.

尤其适合冬季和早春保护地种植。

Especially suitable for winter and spring protected planting.

这张白尾鹞照片摄于犹他州贝尔河候鸟保护地。

For photo of Northern Harriers, Bear River Migratory Bird Refuge, ut.

保护地表土层对于保护草地资源和生态环境，以及沙漠化防治具有极端重要性。

The protection of top soil layer has utter most importance in protection of grassland resources and ecosystem, and in prevention of sandy desertification.

采用二次回归正交旋转组合设计，研究了水肥耦合效应对保护地土壤硝态氮运移的影响。

Coupling effects of water and fertilizers on translocation of nitrate nitrogen in protected land were studied with the design of quadratic orthogonal rotational combinations.