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为探明滴水量对大豆花荚形成的影响规律,于2013和2014年在田间研究了W1(975 m3/hm2、900m3/hm2)、W2(1 575 m3/hm2、1 725 m3/hm2)、W3(2 175 m3/hm2、2 550 m3/hm2)、W4(2 755 m3/hm2、3 375m3/hm2)4种滴水量(头水盛花期)处理对0~40cm土壤含水量和新大豆27开花、结荚动态及产量的影响。结果表明:增加滴水量会直接增加0~40cm土层含水量,提高含水量下限;W4处理下花期较W1延长2d、开花节数增加1节、明显增加主茎10~15节的花数,W4处理下单株花数和单位面积总花数分别较W1增加9.9%~35.5%和17.0%~30.9%;W4下部茎节的成荚速度较W1降低、延长结荚期1~5d、增加10~15茎节成荚数,W4单株荚数、单位面积总腔数、产量分别较W1增加15.9%~37.3%、21.0%~26.3%和27.6%~78.0%。增加花荚期滴水量增产的重要原因是增加花数和荚数。新疆伊宁春大豆盛花期滴头水,鼓粒中期滴末水,生育期间滴水4次,每次滴水600~750 m3/hm2,总滴水量2 550~2 775 m3/hm2,可获得产量5 388.3~6 404.7kg/hm2,其总花数为3 000.4~3 042.0朵/hm2,总腔数为2 436.5~2 978.8个/hm2。
In order to investigate the effect of drip rate on the formation of soybean pods, we studied the effects of W1 (975 m3 / hm2,900 m3 / hm2), W2 (1575 m3 / hm2, 1725 m3 / hm2) The results showed that the soil water content of 0 ~ 40cm and the net soybean content of new soybean 27 Flowering, pod dynamics and yield effects. The results showed that increasing the drip amount directly increased the water content of 0-40 cm soil layer and increased the lower limit of water content. The flowering period of W4 was 2 days longer than that of W1, the number of flowering stage increased one day, The number of flowers per unit area and the total number of flowers per unit area of W4 increased by 9.9% -35.5% and 17.0% -30.9%, respectively, compared with W1. The pod speed of lower W4 decreased from W1 to 1 ~ 5d, The number of pods per plant, the number of pods per plant and the total number of chambers per unit area of W4 increased 15.9% -37.3%, 21.0% -26.3% and 27.6% -78.0% respectively from W1. Increasing flower pod drip yield increase of the important reason is to increase the number of flowers and pods. Xinjiang Yining spring soybean flowering head drip water, drum grain mid-term drip water, drip 4 times during growth, each drip 600 ~ 750 m3 / hm2, the total drip 2 550 ~ 2 775 m3 / hm2, yield 5 388.3 ~ 6 404.7kg / hm2, the total number of flowers is 3 000.4 ~ 3 042.0 flowers / hm2, the total number of cavity is 2 436.5 ~ 2 978.8 / hm2.