The influence of soil temperature on plant

Soil temperature directly affects the growth and development of plants, most of the crop root zone temperature in the 20 & ndash; Growth is faster at 30 ℃. Soil temperature effects on crops mainly has the following several aspects: one, the soil temperature affect plant roots to absorb water and nutrients: low temperature can reduce the root water imbibition and for most of the absorption of mineral nutrition. According to the test, two months age of seedling of cotton, Mark Twain at 10 ℃ root water quantity for 20 ℃ at 20%. Second, the soil temperature affect the formation of plant root and tuber: not only affect the production, but also affect the shape and size of tuber and how much sugar content, etc. The potato seedling growth of Mark Twain, but not production; Mid-term Mark Twain above 28. 9 ℃ could not form tubers, 15. 6 - 22. 9 ℃ is suitable for the tuber formation, formation of the potato piece number and large volume, low Mark Twain number of potato blocks is formed and small volume. Mark Twain large diurnal range and vertical gradient, potato piece into a round shape; On the other hand, a pointed. The potato degradation are also associated with the cultivation period of Mark Twain. Three, soil temperature affect seed germination, emergence: Mark Twain's influence on seed germination, emergence more directly than the temperature, so the general index Mark Twain do more exactly. Four, soil temperature influence the formation of the insect: a lot of insects, the certain stages of the life is spent in the soil, therefore, Mark Twain to insects, especially the development of underground pests. So how do we can accurately know the temperature of the soil? Still need the thermometer to a hand, stainless steel probe directly inserted into the soil, Pointers can directly show the soil temperature. Ever feel very wonderful?