Intercropping techniques
Reasonably arranging intercropping between crops can make full use of land and light energy, suppress the occurrence of diseases and weeds, reduce natural disasters, and achieve more income in one season to achieve high yield and high efficiency. Generally should master the following basic skills: (1) plant type to "a high and a short", "- fat and thin." That is, high-stem crops are matched with dwarf crops; crop-type loose, branches and lush laterally grown crops are matched with crops with compact plant types and longitudinal growth of branches and leaves to form a well-ventilated composite group. Such as corn and potatoes, sorghum and soybeans. (2) The leaf shape should be "a sharp-circle". That is, round-leaved crops (such as cotton, sweet potatoes, soybeans, etc.) are matched with sharp-leaved crops (such as wheat, corn, sorghum, etc.) to take full advantage of nutrients and moisture in the soil. (3) The root system should be "one deep and one shallow". That is, deep-rooted and shallow-rooted crops are used to make full use of nutrients and moisture in the soil. (4) adaptability to "a shade and a yang", "a wet and a drought." That is, shade-tolerant crops are matched with drought-resistant crops. This will be beneficial to each other's ability to adapt to the special environment in the compound population, reduce droughts and floods, stabilize production and security. (5) The growth period should be “early-lateâ€, ie, the maturity period of the main crop should be later, the maturation period of the sub-crop should be earlier, so as to obtain sufficient light energy for the harvest and the main crop at the later stage to create a high yield. (6) Density should be "big-small" and "-wide and narrow." That is, the density of the main crop is larger, the width of the crop is wider, and the density of the secondary crop is smaller and the species is narrower. In order to ensure the advantages of crop yield increase, both main and subsidiary crops will be harvested.