In November 7th to enter the winter solar term means the beginning of winter, winter. The northern cold air has a strong influence, sometimes accompanied by a cool wind rain and snow cold weather. From the average of years, November is the most cold month. The crop may suffer chilling and freeze. After winter in most areas of Chinese, precipitation decreased significantly, the air is dry, soil water loss more. So for the winter wheat and winter rapeseed planting area, soil moisture and drought is very important. The soil moisture condition has a very close relationship with the growth of crops and the winter...

During the winter lettuce elongation enlargement, must every 10 to 15 days to apply a potash and successive application of 4 to 6 times, per acre of potassium nitrate 40 to 50 kilograms, or application potassium sulfate 60 to 70 kilograms, or application of potassium dihydrogen phosphate from 25 to 30 kg, combined application of nitrogen, phosphorus and potassium compound fertilizer or soak composting of flower cake, against the clear water or slurry or retting maturity of animal manure water 50 to 60 times, pour evenly applied in the soil around the roots of lettuce plants. At the same time, every 7 to 10 days of foliar spraying a 0.1% magnesium sulfate, urea 0.2%, 0.3% potassium dihydrogen phosphate, 1000 times amino acid active liquid fertilizer mixture, or 0.5% casserole acid potassium, 1000 times humic acid active liquid fertilizer mixing liquid, continuous spray 3-5 times, uniform spray wet all leaves and stems to begin with beads of water dripping is appropriate, from the foliar potassium supplementation...

A, the red meat honey pomelo yield a good harvest, a year is winter, the winter good or bad management decisions yield level in the coming year the main topic. In the winter of citrusgrandis began to enter the flower bud differentiation and flower bud differentiation period. Must grasp the technical measures in the winter, to promote the strong tree, the flower to seize the next year. "Frost" and "Lidongben" Application of Postharvest fertilizer on yield good recovery after the pomelo trees is very important. "Winter solstice" - "cold winter" fertilizer application. Winter due to the grapefruit tree in a semi sleep state, decrease the activity of the root force, low temperatures, less rain and fertilizer slow decomposition and fertilizer application root less direct impact on...

The low winter temperatures, weaken the ability of microbial activities, need fertilizer conversion efficiency is slow. The winter vegetable growth, need to be fully tested. The way to solve this problem is to recover the quick acting fertilizer.

Pay attention to the time of fertilization of base fertilizer in autumn in the apple tree in late maturing varieties before and after harvest, sooner rather than later. At high temperatures, rainfall, basal has plenty of time decomposition, leaf function has not yet been recession, strong photosynthetic function, nutrient return to the roots, peak coincided with the root growth of apple trees and cleared to heal and give birth to a large number of root and root resorption and to increase the nutritional level of the tree. . Note that the best area of fertilization in the general election of the fruit tree crown of the projection of the edge of a little far away, the whole garden fertilization should be 1 meters away from the trunk. From the depth, in the range of 10 to 35 cm from the surface of the root of the total amount of 80% or so, fertilization depth of 50 cm is appropriate.

Potato, also known as potatoes, is a high starch tuber crops, the growth period of the seedling, the formation and growth of the tuber, starch accumulation period. Potato in the whole growth period, the absorption of potassium fertilizer, nitrogen fertilizer, phosphate fertilizer at least. Different growth periods have different characteristics of nutrient needs. At seedling stage, because of the rich nutrition of the tubers, it needs less nutrient, and it takes about 1/4 of the whole growth period. Tuber formation and growth period, the growth of shoots and tubers and tuber expansion, the need to be more fat, about the total amount of fertilizer 1/2. Starch accumulation period, the need for less nutrient, accounting for about 1/4 of the whole growth period. Can be seen that the formation of the tuber and the growth period of the nutrient supply is adequate, to improve the yield and starch content of potatoes play an important role.

In recent years, the negative impact of long-term excessive use of chemical fertilizers has become increasingly prominent. Organic fertilizer can not only provide comprehensive nutrition for crop and fertilizer efficiency long, increased and turnover of soil organic matter, promote microbial growth, improve soil physical and chemical properties and biological activity, is the main nutrient of green food production. But there are many mistakes in the use and production of organic fertilizer. This issue of the hot line will be targeted at these errors...