How to cultivate shallow sheds in greenhouses
Xiangshui County has promoted the development of greenhouse shallow water coupling technology in Xiaojian, Xiangnan and other towns and villages. The cultivation techniques are now summarized as follows: 1. Finishing Dianchi Lake. In the middle and late February, sandy lands with convenient irrigation and fertility are selected for cultivation. Applying 3,500 kg of organic fertilizer per mu and 50 kg of ternary compound fertilizer as base fertilizer, ploughing into the soil and building a shed, the greenhouse is 6 meters wide and 1.8 meters high. Dig deep trenches around 40 cm deep with anti-seepage ditch covered with plastic film. After pouring a 1cm deep water layer at the beginning of March, the shed was covered and covered with a film, and the temperature was increased. II. Select cultivars with strong growth, early maturity, Suzhou Huayuan and Jinglian No.1, and select 650-700 buds per acre with complete body, intact buds, and thick sections. Before and after March 10, from the edge of the shed, 35 centimeters from the shed, the buds were planted at a distance of 1 meter and 1 meter (25 degrees) from the edge of the shed. The buds were tipped out of the water and the buds were tipped. Put into a plum shape, and always point to the center of the shed. Buds should be dug and planted to prevent the appearance of dry pulp. Third, strengthen management. The leaves were sealed before drawing the leaves. The temperature in the shed was maintained at 30-35°C and at night around 20°C. The depth of the water layer was maintained at 1 to 2 cm. 10 to 14 days after the buds are planted. After the leaves are pumped at the end of March, the temperature in the shed is maintained at 25-33°C during the day and not less than 16°C during the night. The water layer needs to be gradually deepened to 3-5 cm. For each subsequent drawing of a vertical leaf, it is necessary to deepen the water layer by 2 cm. At noon on sunny days, pay attention to ventilation and cooling. When the 2nd leaf is unfolded, 30 kg of compound fertilizer is applied per acre; when the lotus leaves are sealed, 40 kg of compound fertilizer is applied per acre. From mid-April onwards, it is necessary to increase ventilation when the air temperature is gradually increased. When the air temperature reaches 15°C or above, it can be ventilated overnight. In mid-April, the taro turned toward the center of the shed on a sunny afternoon. After entering the scarring season in mid-May, the water layer should be stable at 8 to 10 cm depth. Spray 40% Dimethoate 1500 times to control aphids. In the early stage of the onset of leaf blight and spoilage disease, 50% thiophanate-methyl 800-fold solution or 50% carbendazim 500-fold solution can be sprayed for 2 to 3 times. In early June, the temperature was removed in time to remove the film. Two days after the film was uncovered, 25 kg of urea and 1 kg of Huimanfeng were applied per acre. In mid-June, you can pick and sell. China Agricultural Network Editor