l. Scratch ploughing in the soil back to the top sparse Ling Ling, you can loosen soil, protect the earthworms, warming, weeding, and enhance the ability of wheat seedlings to keep out the cold. According to observations, the average ground temperature in 5 cm soil layers increased by 0.5 to 1°C during the day after 7 to 10 days of general scratching, which is beneficial to the promotion of root development and nutrient conversion. Therefore, regardless of weak seedlings, strong seedlings, or strong seedlings, they must pay close attention during the return to Qing. For wheat fields with a long growing trend, they can also be properly squatted to suppress spring delivery. When ploughing, it is necessary to pay attention to mastery of shallowness and fineness, and push the edge of rubbish on the edge. If repression is carried out before scratching, the soil will not be empty, so that it will receive the effect of Panasonic's implementation and lifting. 2. In the early spring suppression of wheat field repression, it is possible to crush the crushed rubbish, to close the cracks, and to make the wheat roots in close contact with the soil to prevent cold air from invading and damaging the wheat seedlings. At the same time, repression also has a lifting effect, which can increase the water content of the soil surface, which is conducive to alleviating cold and cold damage. 3. Fertilization of wheat in early spring fertilization can make up for winter soil fertility, increase nutrient accumulation, promote the growth of young wheat seedlings, and resist or reduce early spring freezing injury. Especially in the winter, when the temperature is high, the seedlings continue to grow, and the soil consumption is high, early spring fertilization is particularly important. The early spring wheat fertilization should seize the favorable opportunity for the soil to be frozen and returned to the slurry. By deep-growing the ditch, it is generally not watered, so as to avoid lowering the ground temperature and affecting the growth of the wheat seedlings. 4. The spraying of wheat in the green season, the spraying of 200ppm paclobutrazol solution per mu, 30-40 kg, can inhibit the growth of wheat seedlings and enhance cold resistance. Vermicelli Bag,Vermicelli Packaging Bag,Paper Bag For Vermicelli,Vermicelli Bag For Dried Vermicelli Ningxia ZhaiXianSong Commercial and Trading Co.,Ltd. , https://www.nxupin.com
Winter and spring alternating cold air active wheat frost prevention has four tricks
After the wheat enters the returning green stage, the fertility characteristics have changed significantly, and the temperature stage has entered the sensitization stage. The cold resistance of the wheat seedlings is significantly reduced. Once the cold is encountered, the plants are vulnerable to freezing injury. To this end, following the management of early spring wheat, introduce several effective antifreeze methods: