What are the policies on immigration and reclamation in northwest China?

In the northwest region, local governments such as Xinjiang, Ningxia, Gansu and Qinghai have also set up special institutions and issued relevant policies, but the progress is different. The Xinjiang provincial government has been actively encouraging immigrants to reclaim land. 1935 after the opening of the expressway from Shaanxi to Xinjiang, more mainland immigrants poured in. Ningxia and Gansu began to implement the policy of recruiting people to open up wasteland in the 1930s. Although Ningxia has formulated a land reclamation plan of 654.38+0.4 million hectares, it has not been implemented. The effect of reclamation in Gansu province has not been obvious until 1933. Due to the fluctuation of food prices, there was a high tide of reclamation in Qinghai in 1929, and mainland immigrants went there one after another, and then went to a low tide, and the number of people who went to Qinghai for reclamation was greatly reduced.