Every year from late July to early August is the mature harvesting period of Amomum villosum L. The field management after harvesting fruit is an important measure for obtaining stable and high yield of Amomum. The main management measures are now described.
After the result of cutting off the old seedlings, the old seedlings in the plant population have declined, not only consuming water and nutrients, but also susceptible to pests and diseases, affecting the growth of healthy plants in the population. Therefore, after picking the fruit, the old and weak plants and diseased plants should be cut off immediately, and burned out intensively, leaving only 40 to 50 healthy plants per square meter, which is conducive to light transmission in the sand kernels, reducing nutrient consumption and pests and diseases. To promote plant growth and robustness.
Adjusting the shade of Amomum villosum is a kind of yin plant, according to its growth and development habits, it can only grow normally under the condition of 50% shade. Too small or too large a shadow is not conducive to its growth and development. Therefore, after receiving the fruit every year, the shading degree in the Amomum villosum should be properly adjusted. If the shade is too large, the shaded trees in the Amomum vulgaris should be pruned or cut down to reduce the degree of shading. For those small shaded plots, fast-growing trees are planted to increase the degree of shade, while the beneficial population of Amomum villosum plants grows robustly.
Fertilization of the population of Amomum villosum L. after flowering results in a large amount of nutrients, in order to quickly restore its population growth and promote the growth of autumn bamboo shoots, laying a solid foundation for high yields in the second year, after harvesting fruit and cutting old seedlings, per acre Use manure, compost 3000kg, peanut 30kg (or bean cake 50kg), superphosphate 25kg. The above-mentioned fertilizer is uniformly sprinkled and then sprinkled into the sand kernels uniformly, and the soil is covered with 1/2 of the grape stem after application. This time fertilization called to promote bamboo shoots. Entering the second half of February to the beginning of March of the second year, 1000 kg of human excrement and 5 kg of urea will be applied per acre. This time, it is called strong seedling fertilizer, and promotes many long bamboo shoots, strong seedlings and strong population of Amomum villosum. The result of the flower lays the foundation.
Common pests and diseases of pests and diseases are: (1) Leaf blight occurs mostly in the shaded areas in autumn and winter. Control method: It is advisable to adjust the shading degree of Amomum villosum in about 50%; when the weather is dry, strengthen watering or irrigation; in the early stage of the disease, spray it with 70% thiophanate 1000 times. (2) Leaf spot disease is prone to occur in winter after drought or frost. Control method: After the fruit is collected, the diseased leaves are cleaned and burned; the phosphorus and potassium fertilizers are added, and the water is sprayed appropriately; the initial stage of the disease is sprayed with 50% thiophanate WP 800 times. (3) The heartworm is the point of growth of the young bamboo shoots, causing a heartache. Control method: It is found that the young bamboo shoots are immediately cut off and burned. The adult spawning period is sprayed with 40% dimethoate 1000 times liquid or 90% trichlorfon 800 times liquid.
(Miao double)
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