Differences in soil nutrient uptake by different crop roots under intercropping
In the intercropping of different crops in agricultural cultivation, there is inevitably a competition among species, including competition for soil nutrients and water resources. These competitions are mainly divided into ground competition and underground competition. Because the physiological characteristics of crops determine that the impact of crops on poplars can only be underground competition. Trees and crop roots (including woody crops) use soil as a medium for the existence of underground competition interfaces for moisture and nutrients. The rhizosphere soil nutrients of poplars in non-intercropping areas were higher than non-rhizosphere soil nutrients, and the rhizosphere effects of poplar nutrients were greater. After the intercropping, due to the impact of crops, the rhizosphere effects of soil nutrients changed greatly. We measured the soil nutrients with a soil nutrient quickness tester, and then used root analysis systems to study the root production of crops and found that The situation is very different. This may be an important factor leading to differences in the growth of poplars among different intercropping forests; therefore, studying the rhizosphere effects of soil nutrients can directly reflect the crop's ability to compete with nutrients. The accumulation of nutrients in poplar and crop rhizosphere soils is affected by many factors, among which water movement, root distribution, soil microbes and soil enzymes all affect the rhizosphere soil nutrients. Kong Linggang et al. pointed out that the rhizosphere region is a complex micro-ecological environment. Soil enzymes and soil microbes are also affected by the physiological characteristics of plants and have strong rhizosphere effects. Soil microorganisms and soil enzymes can accelerate the decomposition of organic matter and increase soil nutrient availability. Therefore, crop rhizosphere soil microbes, soil enzymes, and rhizosphere effects are also important factors in participating in nutrient competition. To study the nutrient competition mechanisms of crops on forest trees, the physiological characteristics of crops and the rhizosphere effects of soil enzymes and soil microbes need to be studied. 1. Crops have positive and negative effects on the growth of poplars. Not all crops can promote the growth of forest trees. 2. Poplar + Spearmint decreased the growth of poplar, while poplar + wheat and poplar + sweet potato increased poplar growth. The soil physical properties, soil pH, and non-rhizosphere soil nutrients in intercropping forestland are not important factors affecting the growth of poplars. Rhizosphere soil nutrient differences and changes in nutrient rhizosphere effects may be the key factors affecting poplar growth. . Weihai Xinghaiyuan Fishing & Netting Tackle Co.,Ltd. , https://www.yesonagri.com