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据调查,大豆花荚脱落,施肥比例失调是其中一个重要因素。那么怎样才能做到合理施肥呢?一、增施农家肥大豆是盲根系深根作物,用农家肥做基肥,结合搞好深耕整地,才能为大豆根系生长和根瘤繁育创造适宜的土壤环境。二、增施磷钾肥大豆整个生长发育期间,需要一定的磷钾肥,特别是从开花至成熟期对磷钾肥的吸收持续时期较长,为此应在播前亩用过磷酸钙20—25公斤,和农家肥混合堆沤15天左右,经充分拌匀后。开沟条施或穴施在播种沟内,有条件时还可加施草木灰100—150公斤。为了确保籽粒饱满,有利提高籽粒蛋白质和含油量,一般还应在开花结荚期,喷施0.2%磷酸二氢钾溶液2—3次。三、花期追氮为了避免氮肥对根瘤着
According to the survey, the loss of soybean flower pod, fertilizer imbalance is one of the important factors. So how can we do a reasonable fertilization? First, the increase of farmers Fat soybean is a blind root deep root crops, with manure as a base fertilizer, combined with deep plowing and land preparation, in order to soybean root growth and nodulation to create a suitable soil environment. Second, the increase of phosphorus and potassium Soybean throughout the growth and development, the need for a certain amount of phosphorus and potassium, especially from the flowering to the maturity of phosphorus and potassium absorption of the longer duration, this should be sown before sowing 20-25 kg of superphosphate , And mixed with peasant heap 沤 about 15 days, after sufficient mix well. Sowing or applying facilities in the sowing ditch, when conditions can also increase the application of plant ash 100-150 kg. In order to ensure that the grain is full, it is beneficial to increase the protein and oil content of the grain. In general, 0.2% potassium dihydrogen phosphate solution should be sprayed 2-3 times during flowering and podding. Third, flowering chase nitrogen In order to avoid nitrogen fertilizer on the root nodule