Field Management of Amomum villosum after Fruit picking

The mature harvest period of Amomum villosum is from late July to early August every year. Grasping the field management after fruit harvest is an important measure for Amomum villosum to achieve stable and high yield year after year.

Cut off the old seedling

After Amomum fruiting, the growth of the withered seedlings in the plant population has declined, which not only consumes water and nutrients, but also is easy to be infected with diseases and insect pests, affecting the growth of healthy plants in the population. Therefore, after fruit harvest, we should immediately cut off the withered, weak and diseased plants and burn them out of the ground, leaving only 40-50 healthy plants per square meter, which is conducive to transparent light in the Amomum villosum field, reduce nutrient consumption and the occurrence of diseases and insect pests, and promote plant growth and health.

Adjust the shade

Amomum villosum is a kind of shade-loving plant. According to its growth and development habits, it can grow and develop normally only under the condition of 50% shade. Too small or too large shade is not conducive to its growth and development. Therefore, the shade degree in the Amomum villosum field should be properly adjusted after the fruit is harvested every year, and the shade trees in the Amomum villosum field should be pruned or cut down if the shade is too large, so as to reduce the shade degree. If the shade is too small, fast-growing trees are planted to increase the shade, which is beneficial to the population growth of Amomum villosum.

Fertilizer application

The population of Amomum villosum after flowering and fruiting consumes a lot of nutrients. In order to quickly restore its population growth and promote the growth of autumn bamboo shoots, and to lay a solid foundation for high yield in the second year, stable manure, compost 3000kg, peanut 30kg (or bean cake 50kg) and superphosphate 25kg were used per mu after fruit harvest and cutting old seedlings. After common retting and ripening, the above fertilizers were evenly sprinkled into the Amomum villosum field, and the soil was covered with grape stem 1 and 2 as degrees. This fertilization is called promoting bamboo shoot fertilizer. From late February to early March of the second year, human feces and urine 1000kg and urea 5kg were applied per mu, which was called strong seedling fertilizer, and promoted the growth of bamboo shoots and seedlings of Amomum villosum, laying the foundation for multi-flowering and fruiting of Amomum villosum population.

Pest control

The common diseases and insect pests are as follows: (1) Leaf blight mostly occurs in the land with insufficient shade in autumn and winter. Prevention and control methods: adjust the shade degree of Amomum villosum to about 50%; strengthen watering or irrigation when the weather is dry; spray with 1000 times of topiramate at the initial stage of the disease. (2) Leaf spot is easy to occur after drought or frost in winter. Prevention and control methods: after fruit harvest, the diseased leaves of diseased plants were removed and burned; phosphorus and potassium fertilizer was added and water was sprayed appropriately; at the initial stage of the disease, 50% tophan wettable powder was sprayed with 800 times liquid to prevent and cure. (3) the heart-drilling insect harms the growing point of young bamboo shoots of Amomum villosum and causes withered heart. Control method: the young bamboo shoots were immediately cut off and burned, and the adults were sprayed with 1000 times of dimethoate or 90% of trichlorfon during oviposition.