Shandong is a big province of traditional vegetables.

(1) Natural conditions: temperate monsoon climate, high temperature and rainy summer, abundant sunshine in autumn; Plain terrain is conduciv

Shandong is a big province of traditional vegetables.

(1) Natural conditions: temperate monsoon climate, high temperature and rainy summer, abundant sunshine in autumn; Plain terrain is conducive to vegetable cultivation; The soil is fertile.

Socio-economic conditions: developed agricultural science and technology, vast winter market in the north, convenient transportation by road and railway, long history of growing vegetables and sufficient labor force.

(2) Using greenhouse vegetables in winter changed the seasonality and periodicity of agricultural production. The introduction of varieties has changed the regionality of agricultural production.

Investigate the location factors of agriculture.

Agricultural location conditions can be analyzed from natural conditions such as climate, topography, soil, water source and social and economic conditions such as science and technology, market, transportation and labor force.

Due to the cold winter in northern China, agricultural production is limited. Therefore, the adoption of vegetable greenhouses and the introduction of new varieties have changed the situation that vegetables cannot be planted in winter in northern China, indicating that the seasonality, periodicity and regionality of agricultural production can be changed to some extent.