在花生创高产过程中,常出现植株徒长,田间郁闭,光合速率降低,秕果多、饱果少,斤果数增多的问题。对此我们连续多年做了高产花生多次清棵培育壮苗的探讨,取得了一些经验。一、效果多年的实践看,多次清棵比一次清课或不清棵的田块,植株主茎降低2—3厘米,茎基节间距缩短1.2—2.1厘米,单株结实节数增加1.1个,结果范围扩大1.4—4.3厘米,总果枝数增加0.6个,地下果针增加5.1—7.4个,地上果针减少1.7—6个。单株果数增加2.1—6.1个,伏果减少2.2—4.3个,饱果率增加1.0—3.8％,亩增荚果97—148.6斤,增产13.5—15.2％. 二、做法第一次清棵后,停半个多月,锄二遍地时,再进行第二次清棵,将花生植株根颈壅土用小锄清除,使之裸露曝晒,促使根颈和第一对侧枝粗壮,二次分枝大 Peanut in a high-yielding process, often appear plant growth, field canopy closed, lower photosynthetic rate, fruit and more fruit, less fruit, fruit increased the number of problems. In this regard, we have done many years of continuous cultivation of high-yield peanut seedling seedling discussion, and made some experience. First, the effect of many years of practice, clear the tree more than once cleared or bare trees, the main plant to reduce the 2-3 cm stems, shortened 1.2-2.1 cm stem base section, the number of solid lines per plant increased by 1.1 The results range expanded 1.4-4.3 cm, the total number of branches increased by 0.6, the number of underground needles increased by 5.1-7.4, ground needles decreased by 1.7-6. The number of fruit per plant increased by 2.1-6.1, the number of fruit reduced by 2.2-4.3, the full fruit rate increased by 1.0-3.8%, the acre increased by 97-148.6 kg per mu and the yield increased by 13.5-15.2%. , Stop more than half a month, hoe two times, and then the second clear tree, peanut root necklace soil with a small hoe clear, so exposed exposure, prompting the root neck and the first collateral stout, secondary Big branches