Effects of Combined Application of NPK Fertilizers on Population Dynamics and Yield of Zhengmai 366 in Lime Concretion Black Soil
To provide a reference for productive and efficient fertilization of wheat in lime concretion black soil, a field experiment was conducted to study the effects of combined application of NPK fertilizers on growth and development characteristics, yield and yield components of Zhengmai 366. The results showed that changing nitrogen fertilizer variety and increasing its application amount could significantly enhance wheat yield. Especially optimized nitrogen application plus water-retaining agent could significantly enhance total stem quantity and leaf age of main stem, and promote tillering of wheat in lime concretion black soil; Optimized fertilization plus water-retaining agent or controlled-release fertilizer(N) could evidently promote secondary root growing and yield increasing, the wheat yield could be up to 8 756. 87 kg/hnr , fertilizing and soil moisture conservation were the key technology for wheat yield increasing in lime concretion black soil. Therefore, optimized nitrogen application plus water-retaining agen could promote wheat tillering and enhance its grain number per spike, thousand grains weight and yield.
combined application of NPK fertilizerslime concretion black soilZhengmai366population dynamicsyieldabsorbent polymer
NETL
NSTL
万方数据
维普
