Issn 305-9397. Ғылым және білім. 2022. №1-1 (66) issn 2305-9397
ISSN 2305-9397. Ғылым және білім. 2022. № 3-3 (68)
жүктеу/скачать 7.12 Mb. Pdf көрінісі
|
- Бұл бет үшін навигация:
- Materials and methods of research.
| ISSN 2305-9397. Ғылым және білім. 2022. № 3-3 (68)____ _
179 At the same time, rape can improve soil fertility. Leaving after crop residues (38-60 cwt/ha) and having a good degree of decomposition (72%), it stabilizes the content of organic matter in the soil. Thus, in crop rotations, the content of humus increases by 0,04 and 0,06%. rape in the crop rotation has protection value against weeds [17]. Materials and methods of research. For the implementation of this project in 2017, we borrowed research in the field experience, in accordance with the R&D program, which studied the adapted system and resource-saving technology of oilseed cultivation on ordinary chernozems in the conditions of the Akmola region. Rapeseed sowing was carried out on May 17 with a seeding rate of 2.0 million tons. germinating seeds, disc planter SZP-3,6 to a depth of seed embedding 4-5 cm. Harvesting was carried out in the full ripeness phase by direct combining. Laboratory-field research method. The size of plots is 10 x 50 m in four replicates, and the placement of plots is randomized. The soil of the experimental site is represented by ordinary medium-humus chernozem with a humus horizon depth of 25-27cm and an average humus content of 4.01%. In the arable soil layer, nitrate nitrogen – 17.9 mg, mobile phosphorus-8.6 mg, exchangeable potassium-350.0 mg per 1000 g of soil. Consequently, the nitrogen content is average, the phosphorus content is low, and the potassium content is high. The mechanical components of the soil are heavy loamy, the volume weight in the arable horizon is 1.19 g /cm 3 , and in the meter layer on average-1.30 g/cm 3 . The humidity of stable wilting is 12-13%. The climate of the mountain-hill zone of the Akmola region is sharply continental, characterized by long cold winters and relatively short summers. Meteorological conditions during the years of research were different, and in general, the meteorological conditions 2015-2017 in 2015-2017 were favorable for the growth and development of spring rapeseed plants. жүктеу/скачать 7.12 Mb. Достарыңызбен бөлісу:
|