Application of several growth regulators on peanut

Peanut growth regulators can promote seedling growth, fruit weight increase, early maturity and high yield. At present, there are two kinds of growth regulators: one is growth promoter containing trace fertilizer and hormone, the other is growth inhibitor to control growth and prevent lodging. 1. Growth promoter 1. ABT 4 or ABT 8 rooting powder 0.05 g ABT 4 or ABT 8 rooting powder per mu dissolved in alcohol (or high alcohol)25 ml, then added 1 kg water mixed with peanut kernel, can also be combined with mu 20% carbendazim WP 50 g and 40% dimethoate EC 10 ml for seed treatment. Generally, the yield of pods per mu is about 25 kg, an increase of about 10%. 2. Huimanfeng Mu 50 ml Huimanfeng 50 kg water, spraying on the leaves of peanut seedlings at the 6-leaf stage, spraying the second time a week later, can promote the rapid expansion of the population and increase the leaf area. At 12 leaf stage, LAI was 3.66, 0.76 higher than CK, at maturity stage, the number of effective plants increased by 1~1.2, and the yield of pods per mu increased by 25.0~29.3 kg, an increase of 11.1%~12.1%. 3. Zhonghua spray treasure each mu with 5 ml, usage with Huimanfeng. At 12 leaf stage, leaf area index increased by 0.45, branch number increased by 0.4 and underground needle number increased by 0.9 respectively, at mature stage, effective number per plant increased by 0.5, pod yield increased by 19.4~23.1 kg/mu, an increase of 8.1%~10.9%. 4. Plant Health Element 30g plant health element per mu 40~ 50kg water, spraying leaves at early flowering stage, next needle stage and pod setting stage. During the mature period, 100-pod weight increased by 8~ 10g, pod yield increased by 15.7~ 22.5kg per mu, increasing by 6.5%~11.6%. 2. Growth inhibitor 1. Paclobutrazol mu 50 g of 15% paclobutrazol wettable powder to 50 kg of water, evenly sprayed when peanut plant height is 33~35 cm and leaf age is 13~14 leaves, if it is sprayed within 6 hours after heavy rain, it must be sprayed again. After 3 days, the leaf color deepens, the leaf thickness thickens, the stem branch no longer elongates within 20 days, the plant is robust, the mound is solid. The lodging area decreased by 70%, the mature period advanced by 3~5 days, the number of effective plants increased by 0.8, the weight of 100 pods increased by 10 g, and the yield of pods increased by 34.0 kg per mu, with an increase of 14.8%. 2. Uniconazole 5% WP 30g/mu, the same usage as PP333, can increase pod yield by 33.3kg/mu, the increase rate is 14.5%.