Fertilizer is the basis for increasing crop yields and increasing crop yields. As the saying goes, the fertilizer is the crop treasure, which cannot grow long enough. The crop is a branch of a flower. It depends entirely on the fertilizer. It is unreasonable to use fertilizer, the yield is a problem, the fertilizer is not enough, and the income is reduced. Corn is hi light, hi water, hi fertilizer crops, so to master the laws of fertilizer requirements of corn, reasonable scientific fertilization, and improve corn fertilization technology level is an important technical measure for high maize yield.
Fertilization should be reasonable, scientific, and timely. Therefore, the first fertilization should be applied as early as possible before the 4-6 leaves of corn, NPK should be top-quality compound fertilizer with an equal content of 50 kg / acre; the second time in corn trumpet period, topdressing high nitrogen Compound fertilizer 30-50 kg / mu, can not be too close to corn seedlings. Nitrogen needs more nitrogen than corn and less phosphorus and nitrogen than potassium and potassium. Therefore, in the fertilization technique, the basic fertilizer should account for about 50% of the total amount of fertilizer, and the rest is used as top dressing.
Corn dressing can be used in four periods:
(l) Miao Fei should be applied to seedlings at 4 to 5 leaf stage (combined with seedlings or Dingmiao. Cultivated and weeding should be carried out). Pay attention to early application to promote seedling growth.
(2) Jointing fertilizer is generally applied during the jointing period to account for 30% of the total fertilizer application. The main target is strong stalks, and attention should be paid to weak seedlings to promote balanced growth throughout the field.
(3) Panicle fertilizer is applied in the development of maize ear to florets differentiation, accounting for about 10% of total fertilizer, and quick-acting fertilizer is appropriate.
(4) The role of granular fertilizer is to raise the root and protect the leaves, prevent premature defermentation of late fat, so as to extend the functional period of the late green leaves, thereby increasing the grain weight. The fertilizer should be applied lightly and skillfully, accounting for about 10% of the total fertilizer.
Laparoscopy Gynecology Instruments
We're professional laparoscopy gynecology instruments manufacturers and suppliers in China, specialized in providing high quality medical instruments with reasonable price. We warmly welcome you to buy or wholesale bulk laparoscopy gynecology instruments for sale here and get quotation from our factory.
Laparoscopy Gynecology Instruments,Gynecology Surgical Instruments,Gynecology Instruments Set,Gynecology Instruments
Tonglu WANHE Medical Instrument Co., Ltd , https://www.vanhurhealth.com