Detailed Explanation of Spring Corn Intercropping with Autumn Cucumber Cultivation Techniques
(1) Scope of application: Suitable for promotion and application in dryland corn planting areas covered with plastic film. (2) Operating procedures: 1. Land selection: Choose plots with flat terrain, deep soil layers, loose soil texture, medium or above fertility, and strong water and fertilizer retention capacity. 2. Land preparation: After harvesting the previous crop, immediately clear stubble and prepare the land, then...
1. Select suitable varieties. For corn, choose early-maturing compact varieties, such as Luyuandan No. 4, Yancao No. 15, 1243, Huang 417, etc. For cucumber, choose varieties with disease resistance, heat tolerance, shade tolerance, and strong fruiting ability, such as Jinyan No. 7, etc. It is not advisable to choose early-maturing spring cucumber varieties with strong cold tolerance.2. Strengthen fertilizer and water management. In the early stage of corn growth, apply 20 kg of standard nitrogen fertilizer per mu, then earth up and water after topdressing. After the root cucumber has set, apply flexible topdressing according to the cucumber growth conditions combined with watering. Topdressing can alternate chemical fertilizer and human manure/urine to improve plant nutritional status. Generally, apply 15 kg urea or 25 kg ammonium sulfate and about 1500 kg human manure/urine per mu each time, for a total of 3-4 topdressings. Fertilizer and water management in the middle and late stages of corn can be carried out together with cucumber.
3. Spray pesticides to prevent diseases. During the cucumber growth period, because downy mildew, powdery mildew, and other diseases cause serious damage, seize the opportunity to alternately spray several fungicides for each disease in the early stage of onset. For downy mildew, use 25% metalaxyl 600x solution, 40% fosetyl-aluminum 200x solution, 75% chlorothalonil 500x solution, 64% oxadixyl-mancozeb 400x solution. For powdery mildew, use 150x agricultural antibiotic 120 aqueous solution, 25% triadimefon 2000x solution, etc.
4. Strengthen bottom ventilation. In the middle and late stages of corn growth, promptly remove old leaves at the base of the corn to reduce shading, and make full use of the declining corn stalks in the later stage for vines to climb and set fruit.