Planting in saline-alkali land requires attention to soil improvement and the selection of suitable varieties

Planting in saline-alkali land refers to agricultural production carried out on land with a relatively high soil salt content and an imbalanced pH. Such land is mostly found in coastal mudflats, low-lying saline areas and arid and semi-arid regions, and commonly suffers from problems such as soil compaction, poor aeration and insufficient fertility, so crops tend to emerge with difficulty, have a low seedling survival rate and grow weakly.

Saline-alkali land is not unusable; the key lies in improvement and variety selection. Common improvement measures include digging ditches for drainage, irrigating to leach out salt, applying more organic fertilizer, planting green manure crops, and using plastic film mulching to suppress salt. Used in combination, engineering measures and agronomic measures can gradually reduce the salt content of the plough layer and create conditions for normal crop growth.

In terms of variety selection, priority should be given to crops with strong salt-alkali tolerance. For example, rice can be grown while the land is being improved through flooding and salt leaching; sorghum, barley, goji berry (Lycium), seepweed (Suaeda), sea lavender (Limonium) and some salt-tolerant vegetables all have good adaptability, while growing fruit trees usually requires supporting techniques such as raised-bed fields, imported soil and deep-ditch drainage.

Overall, planting in saline-alkali land can both raise land utilization and expand arable land resources, and also help improve the regional ecological environment and boost farmers' incomes. As improvement techniques continue to mature, more and more saline-alkali wasteland is gradually being turned into cultivable good farmland, becoming new space for agricultural development.