Key Points and Remedial Measures of Apple Flowering Frost Defense Technology

Irrigation of water once before and after germination to reduce the soil temperature and delay the phenological period. Due to the high water content of the soil, the temperature on the ground drops slowly, which can supplement the water of the trees, and can reduce the ground radiation, increase the air temperature, and delay flowering.

     According to the weather forecast combined with the weather, smoke was smoked in the evening before the frost. If the temperature is below -5 ° C, the effect is poor. There are two kinds of smokers: one is anti-frost aerosol, the effect is very good, the formula is 20%~30% ammonium nitrate, 50%~60% of sawdust, 10% of waste diesel, 10% of fine coal powder, these materials The finer the better, and then put into paper bags or containers for standby; the other is commonly used smoking materials, which are formulated as crop tobacco, weeds, fallen leaves and other materials that are easy to produce. To make a cigarette stack method: first set up a wooden stake in the middle, and then put a wooden stake in the "ten" character, then put the smoking material together and put it around the stake, and finally put a thin layer on the stack. earth. The smoke stack is generally 1.0~1.2m high, and the bottom diameter is 1.5m. It can be placed in 3--4 heaps per acre. When you smoke, first remove the two stakes, and then ignite them with flammable materials in the holes near the ground. Ignite immediately when the temperature drops to -0 °C. If the smoke pile burns too much, you can press some soil to promote it. Warming and defrosting to alleviate frost damage.

Spraying Shanghai Yongtong Kuabao Organic Water Soluble Fertilizer on apple leaf surface to enhance the cold resistance and stress resistance of the tree, alleviate the damage caused by low temperature freezing damage to the tree body and increase the fruit setting rate. At the flowering stage, a total of 3% of polymycins 1000-1500 times +0.3% borax + 0.1% glucose is sprayed in the whole garden, and 5% isoform urea suspension can be used 1000-1500 times to prevent mildew and increase the fruit setting rate.