论文部分内容阅读
夏红薯间作可增加复种指数,充分利用时间、光能、地力、空间,提高单位面积的经济效益,还可以防治病虫害的发生蔓延和田间杂草的滋生,一举多得。现介绍几种模式,供农民朋友参考。一、红薯间作玉米。红薯和玉米间作,要以红薯为主,每亩可增收玉米80～120公斤。麦收后,及时浅耕灭茬,施碳铵30公斤,磷肥50公斤,耙碎整平,然后单埂起垅。隔4行红薯,种1行玉米,玉米种沟里,红薯插埂上,红薯每亩3000株,玉米800～1000株,可双株留苗,加大株距,玉米要选用早熟、矮秆、叶片上冲品种,播期稍早于夏薯扦插。玉米出苗后要浅锄培土,拔节后需水量大,要解决好红薯与玉米的需要水矛盾,确保正常生长。
Summer sweet potato intercropping can increase the index, make full use of time, light energy, fertility, space, improve economic efficiency per unit area, but also can prevent the spread of pests and diseases and the breeding of weeds in the field, serve multiple purposes. Now introduce several models for farmers and friends reference. First, intercropping sweet potatoes. Sweet potatoes and corn intercropping, to sweet potato-based, per acre can be increased by 80 to 120 kilograms of corn. After the wheat harvest, promptly tillage stubble, ammonium bicarbonate 30 kg, 50 kg of phosphate fertilizer, rake crushed flat, and then single 埂 垅. Sweet potatoes every 4 lines, a row of corn, maize ditch, sweet potato plug on the sweet potato 3000 per acre, corn 800 ~ 1000, double strain may stay, increase plant spacing, corn to use early maturing, dwarf, Blades of red varieties, sowing earlier in sweet potato cuttings. After emergence of corn to shallow hoe soil, water after jointing large, to solve the water needs of sweet potato and corn water conflicts, to ensure the normal growth.