First, intercropping intercropping wheat ---- winter (spring) dishes ---- watermelon - cotton - corn. The specific approach is: Planting wheat. Around October 20, four rows of wheat were planted at a row spacing of 20 centimeters and a 60-cm wide empty zone was reserved. 2. Plant winter (spring) dishes. Plant lettuce or oiled wheat and spinach in reserved empty belts. If lettuce or oiled wheat is grown, it can be raised in advance in mid-September. Lettuce planted in a single row, spacing 20 cm. Oil and wheat vegetables are planted in double rows, with a spacing of 20 cm, a hole distance of 10 cm - 15 cm, and 3 strains - 4 strains per hole. Spinach can be double-lived. 3. Plant watermelon and cotton. In the middle and late March of the following year, after the end of winter (spring) vegetable cultivating and cultivating the land in time, the mulching film will be covered in mid-April, and the watermelon and cotton will be interplanted in a single line at the same time (also can be raised in advance in mid-March. Transplanting and transplanting on April 25th, so that watermelon and cotton are planted on the same single row. Watermelon plant spacing 80 cm, 700 plants per acre can be planted, single plant double vines, stretching direction and planting lines into a 45-degree angle. Two cotton plants were inserted between each two watermelons to maintain a 40 cm spacing between the cotton plants and 1,400 plants per acre. 4. Plant corn. Before and after the wheat harvest, four lines of wheat were planted and interplanted along the middle rows of four rows of corn, with a distance of 1.5 m, 3 plants per hole - 4 plants, and 1100 plants - 1500 plants per acre. Second, the rational choice of crop varieties wheat varieties can be used Zhengzhou 9023, Yumai 47, Yumai 34, wolfberry 4110 and other late sowing, early maturing, high yield, high quality, comprehensive resistance to good varieties; winter (spring) vegetables, lettuce, oil and wheat Vegetables or spinach should be selected as green leafy varieties; watermelons should be selected as Yuyi Nongken No.2, Yuyi Zaoxan No.3, Xukang No.7 and other early-middle-maturing high-yield varieties; cotton should use Yuza 35, standard A1. Large and large bell varieties such as é‚¯éƒ¸284 and Xumian 08 are easy to manage, disease resistant, high-yield, and high-quality varieties. Maize uses Yushu 22, Nongda 108, Xudan No. 2 and other sparsely planted middle ear and early maturing varieties. Third, the management requirements 1. Determine the master-slave relationship between intercropping crops. In the production management process, wheat, watermelon, and cotton are mainly used, supplemented by winter (spring) vegetables and corn, and production management of winter (spring) vegetables and corn is subject to production management requirements for wheat, watermelon, and cotton. 2. Highlight water and fertilizer management. 1 According to the characteristics and requirements of crops, rational use of base fertilizer and top dressing. Wheat, winter (spring) vegetables apply 20 kg of base urea per acre, 30 kg of ternary compound fertilizer, 15 kg of topdressing urea, 10 kg of urea for watermelon, cotton, 20 kg of ternary compound fertilizer, and watermelon Urea 10 kg and 15 kilograms of urea were applied during the expansion period of the melon and young melons; 15 kg and 10 kg of the urea were reclaimed at the early stage of flowering and early stage of the boll opening; 10 kg of the topdressing system of the urea were applied at the 4-leaf and 12-leaf stages respectively. And 15 kg. 2 timely watering. Wheat and winter (spring) vegetables were separately poured with good packing water and wintering water before winter. After the year, they were poured with grouting water for returning green water, jointing water and wheat. Watering watermelon, cotton and corn in time with sowing and fertilizing. 3. Pay attention to pest control. Wheat attention to the control of aphids, spider mites and rust; watermelon pay attention to the control of aphids, spider mites and blight; cotton pay attention to the control of aphids, blind stink bugs and verticillium wilt; corn attention to control aphids, aphids and leaf spot disease. 4. Early harvest, timely release, make room to make way. Early harvest can timely seize the market, increase product value, and increase profits; Tengjing allows roads to lay the foundation for the production of renewable crops and crops. IV. Advantages The outstanding advantages of interplanting in this area are reflected in the seedling technology of corn. 1 Increase the spacing of corn holes and increase the number of plants, and maximize the number of acres of corn. 2 The utilization rate of natural space such as growth space, light, temperature, water and fertilizer was greatly increased, and the grain number and grain weight of the ear of a single plant of maize were significantly increased, and the yield per plant of corn planted in a single field increased by 30%. 3Intercropping with maize can increase income. 4 The interplanting method is simple, easy to operate, low investment, less labor, and the overall benefit is considerable.