Generally, crops are planted in fields with early spring stubble in order to regulate the soil temperature and select white mulch. It can effectively increase soil temperature and germinate earlier. The crops planted are mainly cotton, corn, melons, etc. In winter, those with black mulch are generally planted in greenhouses, mainly to control the growth of weeds.
② Selection of planting crops
For example, the cotton planted is mainly a field planting mode. The reason for choosing white film is to sow and germinate early. To achieve this goal, after the seedlings have grown up, there is basically no membrane matter. Black film planting is different. For example, when planting tomatoes in a greenhouse, black film is generally used. The reason is to control the growth of weeds, but also to maintain a small change in soil temperature. "And black mulch requires one kind of tomato to be used until the seedlings are pulled, otherwise it is just one kind of use.".