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生产实践证明,在花生管理的全过程中,适时进行“三喷”,即喷激素控旺长防倒伏,叶面喷肥防早衰,喷药剂防治病虫害,可增产30％—40％。 一、喷激素控旺长防倒伏。土壤肥力较高,水肥条件较好,植株生长旺盛的花生田,应控制植株徒长和倒伏,有两种植物生长调节剂适合在花生上喷施。一是B_g,它具有控制营养生长,加速生殖生长的特点,据试验,喷后单株果增加20％—22％,饱果率可提高12％左右。在喷药时间上应掌握在植株封垄有效果针入土时喷施,过早会抑制营养生长,搭不起丰产架子,过晚起不到促进生殖生长的作用。用药量为每亩50克对水50公斤。也可在结荚初期,就是当第二批果针开始入土时喷施15％多效唑可湿性粉剂,每亩35克至40克,对水35公斤至40公斤。
Production practice has proved that in the whole process of peanut management, timely “three spray”, that spray hormone control Wang long anti-lodging, foliar spray anti premature decline, spraying agent to control pests and diseases, can increase the yield of 30% -40%. First, spray hormone control Wang long anti-lodging. Soil fertility is higher, better water and fertilizer conditions, strong plant growth peanut fields, should control the plant growth and lodging, there are two plant growth regulators suitable for spraying on peanuts. First, B_g, which has the control of vegetative growth, accelerate the reproductive growth characteristics, according to the test, after spraying the single fruit increased by 20% -22%, full fruit rate can be increased by about 12%. Spraying time should be controlled in the plant seal ridge effect when the needle sprayed into the soil, premature will inhibit vegetative growth, can not take advantage of high yield shelves, too late to play a role in promoting reproductive growth. Dosage per acre 50 grams of water 50 kg. Can also be early in the pod, that is, when the second batch of needles began to soil when spraying 15% Paclobutrazol WP, 35 grams per acre to 40 grams, 35 kg to 40 kg of water.