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1980—1982年,我们进行了3年4造水稻施用镁肥试验,结果表明,喷施镁肥能提高水稻产量。 (一)试验概况 1980年晚造,采用667ppm硫酸镁水溶液在水稻分蘖盛期、孕大穗期、灌浆期作根外喷施,每次亩用肥液150斤,试区面积4厘,3次重复对比试验。参试品种为“包选2号”。据分析都村水路坑试区土壤含镁有效量为74ppm。喷镁处理区的禾苗叶色比较青绿,叶片较大、厚、硬健,成熟时植株仍保持青枝腊秆,穗大,谷粒饱满,空粒少。抽样测定结果:施镁区比对照区成穗率提高7.41％,穗长增加4.82％,平均穗总粒数增多19.7％,每穗充实粒多19.84％,结实率提高1.7％,千粒重
In 1980-1982, we conducted a three-year experiment on the application of magnesium fertilizer to paddy rice. The results show that magnesium fertilizer application can increase the yield of rice. (A) test profile made in late 1980, the use of 667ppm magnesium sulfate aqueous solution in the tillering stage of rice, big ears of pregnancy, filling period for root spraying, each with 150 kg of fertilizer, test area 4%, 3 Repeat the comparative test. The test variety is “package selection No. 2”. According to the analysis of the village of soil test pit magnesium soil effective amount of 74ppm. Spraying magnesia treatment area of the grass seedling color is relatively green, leaves larger, thick, healthy, ripe plants still maintain green branches straw, spike large, full grain, empty grain less. Sampling results: Compared with the control area, the rate of spike increased by 7.41%, the spike length increased by 4.82%, the average number of spikelets per panicle increased by 19.7%, the number of filled grains per spike was 19.84%, the rate of seed setting increased by 1.7%