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Melon Intercropping Summer Maize
Stereoscopic planting refers to the time difference between different growth stages of a variety of crops under a certain condition, the level difference between the roots of different crops in the soil, and the difference in space occupied by the growth of tall and short stalk crops, and the utilization of solar energy by different crops. The interrelationships of strength, etc., effectively exert the levels and peak periods of manpower, material resources, time, space, light, temperature, gas, water, fertilizer, and soil that can be utilized, and maximize the realization of high output, low consumption, multiple varieties, and multiple levels. High-efficiency and high-yield value to form an efficient agricultural ecosystem and a complex population structure of the agricultural production system. Jinzhou has ample sunshine during the growing season and a large temperature difference between day and night. It is suitable for watermelon cultivation. The planting area of ​​watermelon is currently more than 600 hectares per year, but the succession of watermelons is not ideal. In order to explore the way of adjusting the agricultural industry structure and increase the economic benefits per unit area, Jinzhou City carried out the intercropping test of watermelon and summer corn in 2000, and achieved good results. First, the key to interplanting the selected test varieties is the length of their symbiotic period. The symbiosis period of the two crops should be shortened as much as possible. Watermelon chooses Xiaobawang varieties, and summer corn chooses Xia sow Shenzao No.1, No.3 and No.5 varieties developed by Shenyang Agricultural University. Second, the planting method The trial planting site is located in Sifangtai Village, Zhongtun Town, Taihe District, Jinzhou City. The soil is sandy loam and the medium fertility is 30,000 kg of high-quality fertilizer and 3,000 kg of compound fertilizer per hectare. The watermelons were transplanted for transplanting (transplanted on May 5th) with a row spacing of 180 cm, a spacing of 80 cm, and 463 lines of 667 m2. On June 22, two holes of corn were planted among the watermelon strains, leaving two strains per hole, 1,852 square meters and 1,852 strains. The test area was 1,334 square meters. Third, the interplanting results May 5 transplanted watermelons, about June 15 watermelons in the middle of flowering fruit set, when June 22 broadcast summer corn, watermelon fruit diameter of 5-6 cm. The symbiosis period between summer corn and watermelon in June 26 of summer maize is about 25-30 days. When the watermelon is harvested on July 8th, the basal leaves of the watermelon are yellow and lose their physiological function. At this time the summer corn is only 5-6 leaves, plant height 30 to 40 cm, no adverse effects on the watermelon. When the summer corn is in full bloom after jointing, the watermelon is already in harvest season. During the symbiosis between watermelon and summer corn, corn did not pose a threat to the growth of watermelon. Watermelon maintains normal growth, and its yield and quality have no effect. The output of 667 square meters is 3,500 kg and the output value is 1,400 yuan, reaching the level of clearing. Due to the requirement of watermelon cultivation and pruning, the re-branching of the watermelon base was completely destroyed. The base of the watermelon has always maintained a considerable area of ​​open space, so that there is sufficient space for the growth period of the corn and is not deceived by the watermelon. The plant height of the new summer corn is between 170-180 cm, and the stem diameter is 1.8-2.0 cm. The plant type is compact and the leaves are flushed, suitable for close planting. Shenzao No. 1 and No. 5 have a short growing period, and their emergence matures in about 90 days. Shenzao No. 3 has a growing period of 100 days. The 667 square meters of production No. 1, No. 3 and No. 5 were 333.6 kg, 399 kg and 354 kg, respectively, and the output value (sale of green corn) was about 926 yuan. Four; conclusions Cultivation practices show that watermelon and early summer corn interplanting is feasible. The row spacing of watermelon plants is large, and interplanting corn is easy to operate. The symbiotic period of watermelon and corn is only about 30 days, and the two do not affect the yield. The birth of Shenzao No. 1 and No. 5 in northwestern Liaoning Province was only about 90 days, and the yield per plant was more than 200 grams. It is appropriate to apply these two summer sowing maize and watermelon intercropping. Summer corn sowing date may be suitable on June 15-20 (specific sowing date should be determined according to the growth period of corn), and 667 square meters planting density is 1800-2000 strains. Since the summer corn is broadcast live and has a short growing period, it may not be top-dressing, but it is necessary to apply enough base fertilizer and mouth fat. It is necessary to focus on the characteristics of rapid growth of summer corn seedlings, easy formation of seedlings, and time seedlings, in addition to weak seedlings and long seedlings, and to maintain strong seedlings to improve the quality of the group. Watermelon to select early varieties is appropriate.